Long Tom Jumbo Manual PDF (9.6Mb) - Parts HeadQuarters Inc

Page 1
Long Tom
Drill Carrier
Manual
Safety Procedures
Operating Procedures
Assembly and Maintenance Procedures
Parts Schematics and Parts Lists
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Page 2
Preface
The manual is intended to provide users of Long Tom Drill Jumbos with operating and
maintenance instructions to maximize the operation of these machines. PHQ strives to
provide highly productive light weight drill jumbos that are easy to use and maintain at a
reasonable cost. This document contains instructions in assembly of components,
schematic drawings and parts lists to enable the mechanical department to identify
components and provide access to part numbers for ease of ordering replacements. The
manual also provides basic instructions for tramming, steering and setting up the jumbo.
Use the maintenance and repair manual of instructions for PHQ250 Jacklegs to care for
the drills and one can gain significant operating instruction and information from the
Operating Manual for PHQ250 Jacklegs.
For information about any components not shown in the manual or any service issues
which may arise in the use and maintenance of the Long Tom Jumbo please contact PHQ
directly at the following address:
Parts HeadQuarters Inc.
Unit 2, 1175 Appleby Line
Burlington, Ontario, Canada, L7L 5H9
Tel: (905) 332-3271 Fax: (905) 332-9497
E-mail: sales@partshq.com
Website: www.partshq.com
IMPORTANT NOTICE:
Parts HeadQuarters is committed to continuous product improvements so all information,
diagrams and part numbers in this manual are subject to revision. PHQ will endeavour to
provide customers with due notice of any changes. The date of edition of the manual is
identified by the version number shown on the lower left corner of each page in the
manual. In the event of any discrepancy in part numbers or descriptions contact PHQ to
ensure you have the most recent manual.
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Table of Contents
Page 3
1. Overview 4
2. Carrier Styles and Dimensions 5
2.1 Skid Steer………………………………………………………………………………………….. 5
2.2 Rail Mount…………………………………………………………………………………………. 6
2.3 Crawler……………………………………………………………………………………………… 7
3. Specifications and Options 8
3.1 Technical Data……………………………………………………………………………………. 8
3.2 Standard Features……………………………………………………………………………….. 8
3.3 Options…………………………………………………………………………………………….. 9
4. Features and Tips 11
4.1 Locking Valves…………….…………..…………………………………..…………………….. 11
4.2 Sticking Jerky Cylinder………...……………………………………..……………………….. 12
4.3 Safely Filling Lubricators……………………..……………………………………………….. 12
4.4 Blow the Hoses…………………...……………………………………..……………………….. 12
5. Preparing to Lift, Carry, Tow or Tram the Long Tom………………………… 12
6. Lifting and Carrying the Jumbo…………………………………………………… 13
7. Towing the Jumbo……………………………………………………………………. 14
8. Tramming the Jumbo………………………………………………………………… 16
9. Setting up the Jumbo to Drill and Drilling………………………………………. 18
10. Drilling Tips and Safety Tips……………………………………………………….. 22
11. Maintenance and Assembly – Carrier Skid Steer Schematic & Parts List 23
12. Replacing the Chain Drive…………………………………………………………... 24
13. Adjusting the Chain Drive…………………………………………………………… 25
14, Mounting Bracket X1674 - Schematic and Parts List…………………………. 26
15, Assembly of Mounting Bracket X1674……………………………………………. 28
16. Balance Cylinder W1672 - Schematic and Parts List……………………………….. 29
17. Assembly of Balance Cylinder W1672……………………………………………. 32
18. Leg Cylinder W2619 – Schematic and Parts List………………………………. 33
19. Assembly of Leg Cylinder W2619…………………………………………………. 35
20. Routine Maintenance and Lubrication…………………………………………… 40
Long Tom Drive Train Pneumatic Schematic………………………………………… 41
Long Tom Boom Pneumatic Schematic……………………………………………….. 42
Long Tom Lift and Feed Controls……………………………………………………….. 43
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1. Overview
Page 4
1.1. Origins of the Long Tom Drill Carrier
A cost-effective solution was required to reduce or reduce or eliminate the negative aspects of
handheld drilling with Jackleg drills, including:
• The fatiguing physical Labour required when working from uneven terrain
• A high accident and injury frequency, especially muscle strains from fatigue
• Low productivity resulting from frequent re-positioning of legs of drills
• Difficulty in pulling drill steel from completed holes due to operating conditions
1.2. Benefits
• Removes the physical effort required to lift the drill and position the leg
• Simplifies collaring holes, maintaining alignment, and moving from hole to hole.
• Requires fewer changes of drills steel. Holes often collared with eight foot rods.
• Faster drilling with a long stroke feed (no interruption needed to move legs).
• Quicker movement from one hole to setup on to the next hole.
• Drills held aloft by booms making it fast and easy to change drill steel.
• Capable of drilling a 8 foot 2400 mm drill hole in one pass
• Eliminates slippage of the end of the air leg on the drift floor.
• Eliminates potential hazards to the operator due to steel breakage.
• Powerful retract of the anchored leg pulls steel from hole much better.
• Drills remain mounted on the jumbo when not in use (out of harms way).
• No need to connect hoses at start of shift or disconnect hoses at the end.
• The Jumbo trams right in to the work place and arrives at the face ready to drill
• NOTE: Rail-mount style jumbos require a locomotive to provide tramming.
• The jumbo is fully pneumatic powered with no pumps or hydraulic systems.
• Maintenance is simplified in the basic mechanical design and air leg type maintenance
1.3. Applications
• Sub-level development (the Jumbo disassembles for transport up raises
• On the level high-ball drift development (trackless or with track)
• Ramping either up or down from level to level at 15 degree grades
• Mechanized undercut and fill type mining production operations
• Narrow-vein (Thin-seam) room and pillar mining production operations
1.4. Customization
Long Tom models may be customized according to the customer's wishes. The standard new
skid steer model is equipped with two booms. PHQ can provide single or three boom units.
Optional brackets are available increasing height or length of booms for greater face coverage.
A platform which pulls out and folds to width is available to provide an operating floor for
drillers to make it easier to reach to drill “back” holes at the roof of an eleven foot drift heading.
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Page 5
2. Carrier Styles
2.1 Skid-Steer
The standard Skid-Steer carrier is a fully-mobile self-propelled solid rubber tired carrier suitable
for most underground applications. The jumbo featuring two independent pneumatic motors
driving the four wheels has impressive flexibility and mobility under most conditions required of
trackless equipment in the work place. The unit mounts two jackleg drills on pneumatic booms.
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2. Carrier Styles
Page 6
2.3 Rail Mount
For mining operations where there is an existing network of rails the rail-mount carrier is the
most cost-effective option. The jumbo is equipped with three jacklegs mounted on the same
booms as our standard skid-steer units. Face coverage remains the same however the third
drill speeds up operations where the air supply is sufficient. The jumbo is built for a standard
rail gauge of 24” (610 mm) however the width could be customized according to requirements.
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2. Carrier Styles
2.3 Crawler
For extremely challenging and rough terrain, additional power and traction may be necessary.
PHQ has worked with customers to create a custom crawler style carrier. Like the skid-steer
jumbos the crawler models are fully self-propelled however feature an extremely rugged trackbased
design. Each of the tracks is independently driven and controlled allowing for great
maneuverability, while offering the same range of boom motion as our other models.
Please note: All Track Driven Long Tom Jumbos are custom designed and built for specific
requirements and to meet various applications as required. No general dimension drawing,
specific technical information or schematic part drawings are provided until the units are built.
Service and support for these units is provided on an individual basis to meet requirements.
For more information contact PHQ at the address provided at the beginning of the manual.
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Page 8
3. Specifications & Features
3.1 Technical Data
Length, Overall
Width, Overall
Height, Overall
Weight
Booms (Standard)
Boom Length
17 Feet (5.18 Meters)
53 Inches (1346 mm)
66 Inches (1676 mm)
5,500 lbs (2495 kg)
Two
9 Feet (2.75 Meters) Retractable
Standard Face Coverage 8 Feet Wide x 11 Feet in Height **
Motor – Gear Box
Spring-return Tramming Valves
Drive Chain Size & Length
Drill Adapters
Four Tires
Three Lubricators
Air Consumption ***
16AM13 GAST Gear Motor
¾ inch (20mm) Inlet / Outlet
#80 HD Chain, 11 Feet 2 Inches in Length
C-109HD (fits PHQ 250 Drill)
Solid Rubber 22 Inches (560 mm) Diameter
JOY Football Type 2.7 Pint (1.5 Liter)
380 f 3 /min (10.7 m 3 /min) @ 90 psi (6.2 Bar)
* Technical Data: Specifications listed are based on the shipping dimensions of the carrier itself, with booms, goosenecks and
drill adaptors attached in locked positions (i.e. not swung open or extended) however, these figures do not include drills or any
optional equipment. ** Standard Face Coverage: Measures represent the maximum distances attainable under standard
configuration and allowing the booms to swing open as far as possible. Additional width coverage of one extra foot may be
gained by rotating the goosenecks 90º (6” per side). For additional height and width, please see the extender options featured
on the next page. ***Air Consumption Represents full functionality of the jumbo including tramming, while using both drills.
3.2 Standard Features
General:
One gooseneck per boom with drill adapter mounting a PHQ250 jackleg drill. (Alternate: AL67 drill)
Jumbo connects to one air header and water header in the work place. (minimum 2” air line 1” water line)
Jumbo requires minimum of a fifty foot 1 ½” diameter Bull Hose compressed air connection (not supplied).
Jumbo is complete with all necessary onboard air and water hoses and control valves.
Skid-Steer Carriers:
Two standard nine foot retractable booms complete with feed cylinders and drill lubricators.
Two reversible gearmotors with integral gear cases (20:1 ratio) and chain drive to axles.
Two independent tramming air supply control valves to facilitate skid steering.
Four durable solid rubber tires prevent punctures and provide rigidity
A rigid platform provided at the back of the carrier for the operator to stand on while tramming
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3.3 Options
Long Tom Jumbos can be customized with the addition of the following options:
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Boom 12” Extender to expand the
width of face coverage up to 12
Inches (340 mm) per side. The
extender increases face coverage
allowing for 10 foot (3 meter) width x
11 foot (3.4 meter) height
Boom 15” Extender to expand the
height of face coverage up to 15
Inches (380 mm) per side. The
extender increases face coverage
allowing for 10 foot (3 meter) width
by 12 foot (3.7 meter) height
Operator’s Drilling Platform pulls
out of the front end of the jumbo and
folds out to provide the added height
required to reach drill controls when
drilling back holes.
Pneumatic Turbine Lights are
available to mount on the Long Tom
Drill Carrier to provide lighting to the
work area and for tramming.
Spare Boom A Skid Steer Two Boom
Carrier can be modified to accept a
third operating boom. The third boom
will add 400lbs (181kg) in weight.
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3.3 Options Continued
Towing Eyes are installed front and
back on the Long Tom Jumbo to allow
easy connection for towing using an
extendable Tow Bar or a Chain.
Boom Safety Chain. A hole is drilled
in the web reinforcement of the boom
extension to accommodate a “D” type
shackle and the last link on a length
of one inch chain with a hook on one
end has the last link at the other end
welded to the boom. Connect the
hook into the shackles to ensure the
boom does not extend accidently.
Tool Box. A tool box can be welded
to the rear of the Skid Steer Carrier
above the operator’s platform to allow
for storage of smaller spare parts and
tools if required.
Wheel Chock Holders (four) to store
wheel chocks (four) when tramming
the Long Tom can be installed to form
mud flaps covering the drive wheels
at each end of the wheel fenders.
Clipboard Holder can be mounted at
the back of the carrier to carry the
operator’s manuals and shift notes.
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3.3 Options Continued
Page 11
Self-Rescuer Box can be added at the
back of the Long Tom Jumbo to
carry a PLC1200BK Self Rescuer
Drill Steel Holders are attached to the top
of each wheel fender. Different lengths of
drills steels up to eight foot under the collar
can be placed in the holders while drilling.
Loose drill steels in the holders must be
secured when tramming
Extendible Towing Bar
Eyelets are installed at the front and rear of
the Long Tom where an Extendable Tow
Bar can be affixed to tow the carrier. (see
instructions for towing the LongTom on
Page 17)
4. Safety Features and Tips
4.1. Locking Valves - Insert locking pins in the
holes provided on all air and water supply valves
when locking down the air and water to prevent a
valve from accidently twisting open. PHQ
recommends the use of “Whip-Checks” on large air
supply hose connections. Wire Whip Checks
encircle and grip ends of connections preventing
pressurized hoses whipping around from high
pressure of compressed air exiting the hose.
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4.2. Jerky Cylinder Action - When new the boom
lift cylinders and extension cylinders “stick” causing
the cylinder pistons to jerk in or out. Open the drill
throttle with control handle in the lowest hammering
position. Vibration helps to make the movement of
the booms up and down and the extending and
retracting of the feed piston in and out smoother.
4.3. Safety Filling Lubricators – PHQ supplies
safety filler caps on all our lubricators. To fill the
lubricator with rock drill oil or rock drill grease undo
the filler cap using a mine wrench. There will be an
audible hiss of air if the lubricator is pressurized.
Close the valve and blow the hose to relieve any
pressure before removing the cap to fill lubricator.
Page 12
4.4. Always blow hoses and air lines before
connecting. Air hoses must be “blown” every time
before connecting to the Jumbo to clear any debris
or water in the air lines. Water hoses should be
briefly flushed before connecting to be sure there is
no debris in the water hoses. The air supply and
water supply to the Jumbo should be turned off
whenever the Jumbo is not in use. Drain water
hoses if there is danger of freezing temperatures.
5. Preparing to Lift, Carry, Tow or Tram the Long Tom
5.1. Lock the boom extensions from accidently
extending while the jumbo is tramming. Connect
the hooks of the safety chains to the shackles on
the two booms extensions.
5.2 Secure the booms in the support brackets
provided at the front of the carrier as close as
possible together.
5.3 Secure support chains from the main
cylinder to the leg extension by wrapping the
chain around the hook on the leg. Avoid pinch
points on the booms when moving the booms.
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Page 13
5.4 Store The Wheel Cocks in the four holders
provided.
5.5 Secure Drill Steel in the steel holder by
snuggly wrapping rope or strap around the steel
in the holder. Be sure drill steels cannot slip out
when moving the carrier.
5.6. Disconnect the water supply from the
main mine water header and coil on the jumbo
or transport separately.
6 Lifting and Carrying the Jumbo
6.1. It is possible to pick up the carrier and carry
the Jumbo in the bucket of a large scoop tram or
fork lift truck. Always securely chain the carrier
to the bucket of the scoop tram or forks of the lift
truck using the chain hooks provided on the
pedestal tower of the drill carrier. There is no
need to place the chain drive in neutral position
if lifting and carrying the Jumbo.
6.2. Check to be sure that the tramming control
handles are in the neutral position.
6.3 Reach down and turn on the air supply
valve providing compressed air to the two
pneumatic drive motors inside the carrier.
6.4 Safety Point: Always be aware of any
personnel that may be in the area and take
special attention of where the drilling ends of the
booms are when lifting and transporting the
Long Tom jumbo.
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6.5. Back the Long Tom rear wheels into the
bucket of a scoop tram or over the forks of a
utility lift truck. Remove the operators stand.
Operate the tramming levers by reaching across
the back of the bucket to reach the handles.
Back in until the back end of the carrier is up
against the bottom of the bucket on the scoop
tram or firmly against the uprights of the truck.
Page 14
6.6. Chain the Jumbo tightly to the bucket of
the scoop tram or the uprights of the large utility
lift truck using 3/8 inch (50mm) chain. Tilt the
bucket of the scoop tram or forks of the utility lift
truck back to lift the front wheels of the Jumbo
off the ground.
6.7. Disconnect the bull hose from main mine
air supply line valve and coil on the jumbo or
remove and transport separately. Proceed to
transport the Jumbo.
6.8. Remove the booms. It may be necessary
to remove the booms if carrying the jumbo a
long distance. Remove the four bolts holding
each boom to the arms of the main frame.
Disconnect the air and water supply hoses at the
header and remove the booms. Proceed to
carry the Long Tom Jumbo to the next working
heading. If required transport the booms
separately.
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7. Towing the Jumbo
7.1 Check the area surrounding the Jumbo when towing. Be attentive where the drilling ends
of the booms are when towing the Long Tom Jumbo so they do not strike the wall. Follow all
the procedures described in 5. Preparing to Lift, Carry, Tow or Tram the Long Tom
7.2. The two chain drives must be placed in neutral.
Remove the bolt from the center of each of the drive
caps and set the bolt to one side. Safety Point: The
carrier should be on a level surface or the wheels
chocked before working on the chain. The air motors
and chain act as a passive braking system.
7.3. Remove the caps (SJ7858). The caps may have
become very snug and it may be necessary to use a
flat head screwdriver to pry the caps from the
sprockets.
7.4. Reverse the Caps and replace it on the sprockets
with the keyway facing outwards so that the drive
sprockets are now disengaged and turn freely on the
drive shafts.
7.5. Secure the Caps. Replace the bolts removed
earlier and tighten in to place. The carrier is now ready
for towing. When finished towing reverse the
procedure to engage the chain drives to the drive
shafts for tramming.
7.6. Disconnect the bull hose from main mine air
supply line valve and coil on the jumbo or remove and
transport separately. Proceed to transport the Jumbo.
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7.7. Tow the Carrier from the front end using the
extendable Tow Bar provided. Be sure booms are
aligned as close together as possible centered on the
jumbo and resting in the boom supports (See 5.2). Tie
the booms together and down securely with rope or
straps.
7.8. Tow the Carrier from the front end using the
extendable Tow Bar provided. Drop the post on the
end of the Tow Bar into the Eyelet and insert the cross
pin and fix securely in place with the locking pin. Care
must be taken when towing the carrier with the booms
in a forward position to ensure the booms do not strike
the walls of the travel way.
8. Tramming the Jumbo
Safety Point: Be aware of any personnel that may be in the area and take special attention of
where the drilling ends of the booms are when tramming the Long Tom jumbo. Follow all the
procedures described in 5. Preparing to Lift, Carry, Tow or Tram the Long Tom
8.1. Disconnect the water supply from the mine supply
at the header and coil the water hose on the jumbo or
transport separately if tramming the Long Tom over long
distances.
8.2. Attach the Bull Hose to the mine supply valve at the
header. Blow the hose and the mine airline to remove any
water or debris sitting in the pipe and the hose (See 4.4.)
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Page 17
8.3. Lock both booms securely from swinging. The
trailing hoses from the booms to the drills should be lifted
and tied to the booms. The operator can now mount the
platform at the back of the carrier to get into position to
operate the tramming control handles.
8.4. Safety Point: Be sure the Bull Hose is long enough to
complete the tram distance. Do not stretch the hose and
put strain on the fittings.
8.5. Check to be sure that the tramming control handles
are in the neutral position.
8.6. Reach down and turn on the air supply valve
providing compressed air to the two pneumatic drive
motors inside the carrier.
8.7. Safety Point: Check the immediate area, walk
around the carrier and check in the direction you are
intending to travel to be sure no personnel are in the
operating zone of the carrier.
8.8. Always stand on the operator’s platform when
tramming the Jumbo. The operator should have a clear
view of both sides of the Long Tom and to the front of the
machine when tramming forward. Always check to the
rear to be sure personnel are clear of the area before
tramming to the rear. Never operate the tramming handles
when standing on the ground.
8.9. Grip a control handle in each hand and slowly push
the two handles forward simultaneously to move the jumbo
in the direction of the forward facing booms.
8.10. Look over your shoulder to check the area behind
the jumbo and pull back on both of the control handles
simultaneously to move the jumbo in the reverse direction.
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8.11. To rotate the jumbo to the left push forward on the
handle on the right side at the same time as you pull back
on the handle on the left side. While tramming the jumbo
will turn to the left when the left handle is returned to the
neutral position or at any time the right handle is further
advanced than the left handle
8.12. To rotate the jumbo direction to the right push
forward on the handle on the left side at the same time as
you pull back on the handle on the right side. While
tramming the jumbo will turn to the right when the right
handle is returned to the neutral position or at any time the
left handle is further advanced than the left handle
8.13. Release both handles and they will return to
the neutral position stopping the flow of compressed
air to the motors and the jumbo will come to a stop.
With the flow of air stopped the motors act as a
passive braking system and the Jumbo does not
move when on a flat surface.
9 Setting up the Jumbo to Drill and Drilling
9.1. Access the Filter Screen before connecting the Bull
Hose to the main air valve at the receiver on the Long Tom
by removing the large air valve assembly to reveal the filter
handle on the stainless steel filter screen inside.
9.2. Clean the Filter Screen – Pull the filter screen out of
the receiver and clean any debris from the inside of the
screen. Replace in the receiver and reinstall the main air
valve onto the receiver. The stainless filter screen will pick
up only larger particles of debris that comes from the mine
airline, fine particles can pass through. Always blow hose.
9.3. Connect the water supply to the main mine supply
valve at the header provided at the work site.
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9.4. Connect the Bull Hose to the main mine compressed
air supply valve at the header provided at the work site.
Blow hose as described in 4.4. For the moment turn the
compressed air and water valves off.
9.5. Inspect the Work Place. The area where the drilling
is to take place must be inspected and any loose rock
scaled before moving the jumbo in. Turn on the water and
wash down the face to check for “miss holes” or “bootlegs”
(holes from previous work where explosive did not
completely detonate). The face should be marked up and
painted to show a grid outline of where the holes will be
drilled. It is good practice to drill the cut in a different
location each round to avoid “bootlegs”.
9.6. Connect the air and water hoses to air and water
inlet connections on the Long Tom. Turn on the air and
water valves at the header.
9.7. Center the booms and set both booms into the
holders at the front of the carrier to prevent booms from
swinging while tramming to the face. The trailing hoses
from the booms to the drills need not be lifted or tied to the
booms for this short distance.
9.8. Tram the Jumbo into the work heading leaving
approximately two full meters between the front head of
the two drills on the booms and the tunnel rock face that is
to be drilled. This allows space to change drill steel
efficiently.
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Page 20
9.9. Align the Jumbo Booms with the center line of the
round to be drilled using the back-sight and front-sight line
plugs supplied by Mine Engineering. The LongTom should
be “square” to the face wherever possible.
9.10. Before Turning on the Air to the Booms place the
throttle handles on both of the drills in the “neutral” position
and the feed control handles on both of the drills in the
“forward” position. Air must flow through the drills and
back to the boom controls to operate the booms and leg
feeds.
9.11. Open the lubricator plugs in the fill ports on the in-line
lubricators mounted on the booms that supply air to the
drills and inspect to be sure that there is adequate
lubricant in the reservoir for drilling. Tightly close the
lubricator plugs and turn on the air valves and water valves
next to the lubricators to open the supply to each drill.
9.12. Unlock the Pressure Regulator Knob by turning the
centre red locking control counter-clockwise until the
Pressure Regulator Knob turns freely
9.13. Lower the Boom by rotating the Pressure Regulator
Knob in a counter-clockwise direction.
9.14. Raise the Boom by rotating the Pressure Regulator
Knob in a clockwise direction.
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9.15.. Once the operator gains “a feel” of the controls he
will be able to set the Pressure Regulating Knob so that
the balance of the Boom complete with Drill attains
“equilibrium” and will require only slight pressure by the
operator to raise or lower the boom to a new drilling
position. A fold out platform (pictured) is an option. If
drilling in workings with high roof it is advisable to build a
simple portable platform to use when drilling back holes.
Page 21
9.16. Lock the Pressure Regulator Knob by turning the
centre red locking control in a clockwise direction until the
Pressure Regulator Knob can not be turned. The control
remains in this position as long as the boom remains
balanced in equilibrium.
9.17. Extend the Feed Leg by rotating the Hexagonal
Handle on the Gooseneck in a counter-clockwise
direction.
9.18. Retract the Feed Leg by rotating the Hexagonal
Handle on the Gooseneck in a clockwise direction.
9.19. Extend the Feed Leg by rotating the Hexagonal
Handle on the Gooseneck in a counter-clockwise
direction.
9.20. Retract the Feed Leg by rotating the Hexagonal
Handle on the Gooseneck in a clockwise direction.
9.21. Raise and Lower Both Booms, extend and retract
both feed legs to ensure the Jumbo is positioned with
sufficient clearance to change drill steels and the booms
are able to reach and drill all the required holes in the drift
round. When drilling lifter holes at the floor of the heading
rotate the drill to one side of the boom or invert upside
down.
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10. Drilling Tips and Safety
Page 22
10.1. All Normal Mine Safety Rules apply when using the Long Tom Jumbo. All required
safety gear, hard hats, gloves, safety lanyard belts, mine personnel lights, hard toed boots, and
mine coveralls or oilers are to be worn as required.
10.2. Walk Into the Workplace to check for hazards before tramming the Long Tom to the
face.
10.3 Normal Mining Procedures Apply. Check for loose with a scaling bar, scale and wash
down and mark the face where the drilling will take place.
10.4. Drilling a Drift Round. Start drilling the lower holes in the drift round first to prevent
washing away the marks on the face that designate where the holes should be drilled.
10.5. Two Drill Operators can work together to accurately collar all of the holes to be drilled in
the round using a shorter drill rod. To collar the holes, one man will operate the booms and
drills while the other stabilizes the drill steel and bit at the face to start the holes at the right
location. The drillers move to each location and drill a collar a few inches deep. Collaring all
the holes in the right place makes it easier to move the boom and drill from one hole to another
during drilling operations and each man can work alone with his own Boom and Drill to
complete the round.
10.6. Operators should check the work place during the shift to see if drilling has caused
any loose rock at the back or on the face. Test the roof and face with a scaling bar to be sure.
10.3. Drillers should read the Operating Manual for PHQ250 Jackleg Drills and follow the
instructions when drilling a drift round. A Long Tom Boom replaces a Retractable Leg used
with a PHQ250 Jackleg Drill providing faster drilling, much easier and safer work conditions.
DO ONE ACT OF SAFETY TODAY
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Page 23
11. - 20. Parts, Assembly and Maintenance
11. Carrier Skid Steer Schematic and Parts List
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12. Replacing the Chain Drive (Y8040)
Page 24
12.1. Open the chain guard on either side of the drill carrier.
Remove a bolt from on end of the guard, loosen the bolt at the
other end and swing the guard out of place.
12.2. Replace the Chain (Y8040). Lay out a new chain by
draping it over the sprockets as shown and pull tight.
12.3. Bring both ends of the chain together near the bottom of
the large wheel sprocket and temporarily join the ends of the
chains together using a clamp as shown.
12.4. Insert a Master Link (Y80401) and secure with a Half Link
(Y80402) to complete the chain.
13. Adjusting Tension of Chain Drive (Y8040)
13.1. Loosen the Locking Nut on the Tensioner Assembly
(J5220) and rotate further towards the head of the bolt.
13.2. Turn the Bolt in a clockwise direction to push the tension
arm more tightly into the chain or turn counter-clockwise to
move the adjustment out and loosen the chain.
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13.3 Increase the Tension until the chain is rigid and no slack
is evident between the top two idler sprockets. There is no
need to tighten the chain beyond this point.
13.4 Lock the Chain tension setting by tightening the locking
nut against the plate to secure the assembly from further
movement.
14. Mounting Bracket (X1674) Schematic and Parts List
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15. Assembly of Mounting Bracket (X1674)
15.1. Lay out all the components that make up the
mounting bracket assembly on a flat surface as shown.
15.2 Slide the Taper Lock Pedestal (X1637) over the shaft of
the Mounting Plate (W1511) until the pedestal rests on the
taper of the shaft.
15.3 Push the Pedestal Pressure Ring (Y1280) into the Top
Bearing Plate (Y1631)
15.4. Place the Top Bearing Plate (Y1633) on the bracket
assembly. Take care to line up the bolt holes on the bottom.
Slide two of the Washers (J5140) onto the Bolts (J5130) and
push through the holes in the Top Bearing Plate (Y1631)
15.5. Slide each of the remaining two Washers (J1540) onto
the ends of the Bolts (J5130). Thread on the Hex Nuts
(J5150). Tighten the nuts to secure the assembly.
15.6 Fasten the Top Bearing Assembly (Y16311) to the
Taper Lock Pedestal (X1637) with the Nylon Insert Nut
(49TU168). Tighten the nut until firm resistance to swiveling
the assembly is achieved. Do not over-tighten or the swivel will
lock up.
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15.7. Thread one of the Grease Fittings (1610) into the center
of the Taper Lock Pedestal (X1637)
15.8. Thread the other Grease Fitting (1610) into the hole
provided on the Taper Lock Pedestal (X1637) near the Top
Bearing Plate (Y1631)
A Long Tom Jumbo requires two complete
Mounting Bracket Assemblies (X1674).
The rugged mounting bracket assembly is
designed to carry the full weight of the boom
assembly while still providing a flexible mount
that allows the boom to be manually turned
and moved into various drilling positions with
relative ease.
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16. Balance Cylinder (W1672) Schematic and Parts List
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17 Assembly of Balance Cylinder (W1672)
17.1. Lay out the components of the Balance Cylinder
Assembly (W1672).
17.2. Insert the Piston Rod Bearing (Y271) into the Cylinder
Head (X16711)
17.3. Carefully press the Piston Rod Bearing (Y271) into place
until seated firmly in the Cylinder Head (X16711)
17.4. Seat the Rod Wiper (250G2) into the Socket Packing Cap
(Y268)
17.5. Examine the assembly of the Rod Wiper (250G2) to be
sure it is tightly seated in the recess provided in the Packing Cap
(Y268) before proceeding.
17.6. Insert the complete Rod Packing Set *Y274) into the
Cylinder Head (X1671)
17.7. Slide the Gasket (Y260) onto the Packing Cap (Y268). Be
sure the bolt holes in the two components line up perfectly.
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17.8. Place the Packing Cap (Y268) onto the Cylinder Head
(X16711). Be sure the holes in the components line up perfectly.
Place four Washers (J5020) on the four Bolts (J5010). Tighten
the bolts firmly.
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17.9. Apply a thick layer of grease to the inner diameter of the
Packing Cap (Y268) and the Cylinder Head (X16711).
17.10. Turn the Cylinder Head (X16711) upside down and place
the Gasket (Y2721) on the recessed diameter of the face of the
Cylinder Head.
17.11. Slide the Cylinder Head (X16711) on to the Piston Rod
(Y1257).
17.12. Position the Cup Follower (Y265) on to the end of the
Piston Rod (Y1257).
17.13. Cover the Cup Follower (Y265) with the Cup Packing
(Y266).
17.14. Slide the Piston Head (Y267) on to the end of the Piston
Rod (Y1257).
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17.15. Turn the Rod Nut (Y1250) on to the threaded end of the
Piston Rod (Y1257) and tighten.
17.18. Install the Set Screw (supplied with Y1250) in the hole on
the Rod Nut (Y1250).
17.19. Slide the Balance Cylinder Bare (X1642) over the rod
assembly and line up the bolt holes with the Head Gasket (Y272)
and the Cylinder Head (X16711). Fasten the two pieces
together using eight Bolts (J5030) eight Washers (J5040) and
eight Nuts.
17.20. Install the Pipe Plug (Y1263) into the hole on the end of
the Balance Cylinder Bare (X1642).
17.21. Loop a chain through one of the links of the Drop Lock
Chain (J5000). Fasten the chain to the Balance Cylinder
Assembly.
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18. Leg Cylinder (W2619) Schematic and Parts List
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19. Assembly of Leg Cylinder (W2619)
19.1. Lay out the following components of the
Leg Cylinder Assembly (W1672).
1 of Retaining Ring (5000275)
1 of Rod Wiper (275HD2)
1 of Set Rod Packing (Y274)
1 of Piston Rod Bearing (Y271)
1 of Packing Cup (Y1252)
19.2. Carefully place the Piston Rod Bearing (Y271) into the
Packing Cup (Y1252) so that it is properly aligned...
19.3. Press the Piston Rod Bearing (Y271) firmly into the Packing
Cup (Y1252) until it seats solidly in the Packing Cup.
19.4. The top surface of the Piston Rod Bearing (Y271) should
align with the top surface of the Packing Cup (Y1252)
19.5. Place the Packing Cup Assembly upside down on a surface
and insert the set of Set of Rod Packing (Y274) into the Piston
Cup Assembly.
19.6. Insert the Rod Wiper (275HD2) on top of the Set of Rod
Packing (Y274) in the Cup Assembly.
19.7. Place the Retaining Ring (5000275) on top of the Set of Rod
Packing (Y274) and lock into place using the retaining ring pliers.
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19.8. Lay out all of the remaining Leg
Cylinder components on a clean flat surface
before proceeding to complete the assembly.
19.10. Slide the Inlet Cup Follower (W25900) onto the Piston Rod
(Y1730) in front to the Packing Cup Assembly (Y1252).
19.11. Place a Cup Packing (Y1241) over the Piston Rod (Y1730) and
install onto the Inlet Cup Assembly (Y1252).
19.12. Place the brass Piston Head (Y1238) on the Piston Rod (Y1730
butting up to the Cup Packing (Y1241).
19.13. Place a Cup Packing (Y1241) onto a Cup Follower (Y1236)
19.14. Slide the assembled Cup Packing and Cup Follower over the
Piston Rod (Y1730) and butt up against the brass Piston Head (Y1238)
19.15. Insert the set screw provided into the hole on the side of the Rod
Nut (Y1250) and thread in a few turns.
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19.16. Place the Rod Nut (Y1250) onto the threads on the end of the
Piston Rod (Y1730) and tighten snugly.
19.17. Push the Transfer Hose (J5110) through from the other end of
the Piston Rod (Y1730) and continue until the end comes out through
the Piston Rod and the Rod Nut.
19.18. Attach the Transfer Hose End Fitting (J5120) to the end of the
Transfer Hose (J5110).
19.19. Carefully screw the Transfer Hose End Fitting (J1250) into the
threads inside the Rod Nut (Y1250).
19.20. Insert the completed Piston Rod Assembly (Y1730) into the Leg
Cylinder (X1650).
7. Routine Maintenance and Lubrication
20. Greasing the Jumbo Chassis and Booms
Safety Point: Always disconnect the air supply from the Long Tom Jumbo before initiating any
maintenance procedures. Make sure the carrier is on level ground with wheel chocks in place.
Greasing: There are twenty four grease nipples located on the chassis and boom that should
be greased with a grease gun containing NLG2 Grease (or equivalent). When the jumbo is in
continuous use the three grease points on the swivels and joints of each of the booms require
greasing after each 8 hour shift. The five grease points on the sprockets and idlers on each of
the chain drives on both sides of the chassis require greasing after 40 hours of operating. If the
tramming distances are further than 100 meters the requirement changes. The two grease
points on the tramming valves require grease after every 80 hours of use. The level of oil in the
motor cases inside the chassis should be checked and topped up after 80 hours of use.
Safety Point: Check the tension of the drive chains on a daily basis.
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20.1. Filling Drill Lubricators Check the level of the rockdrill
grease (or oil) in the two in-line football style lubricators on the
Jumbo booms at the start of each shift to be sure they are full.
Remove the safety filler cap with a mine wrench and top up the
rock drill grease in the reservoir. PHQ recommends use of
Vultrex triple zero rock drill grease. If using rock drill oils the
lubricators should be checked mid-way through the shift and
refilled if necessary with oil.
20.2. Drive Motor Lubrication High torque is an inherent
characteristic of pneumatic gear motors, making them
especially adapt at applications involving heavy starting
loads. The motors should be operated under load and in a
near horizontal position. The motors perform satisfactorily
in high temperature areas up to 200 0 F (93’C).The air
supply line to the two motors passes a coarse filter and is
equipped with an in-line lubricator located at the back of
the carrier.
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20.3. Filling the Lubricator for the Drive Motors Check the
level of the rockdrill grease (or oil) in the in-line football style
lubricator at the back of the Jumbo at the start of each shift to be
sure it is full. Remove the safety filler cap with a mine wrench
and top up the rock drill grease in the reservoir. PHQ
recommends use of Vultrex triple zero rock drill grease.
20.4. Avoiding Air Contamination - Bull Hose Always “blow”
the air line before connecting the Bull Hose to the Air Receiver.
Should debris enter from the air line the ports and orifices where
the air flow is constricted will plug causing catastrophic problems
with the entire jumbo and drill system. If contaminated air enters
the jumbo it will be necessary to disconnect most air connections
and “blow” plugged areas clear of debris. Check the inside of the
Air Receiver and clear out any debris inside.
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20.5. Lubricator and Tramming Pipe Assembly Compressed
air travels from the Air Receiver inside 1” pipe connections,
passing through the 1” full flow inner tube of the Lubricator.
Check that the Lubricator is not contaminated with water or debris
by removing the Safety Filler Cap.
20.6 Tram Valves From the Lubricator the pipe is narrowed down
to 0.75” fittings and hoses to connect to the 0.75” ports in the
Tram Valves. If the Tram Valves become contaminated
disconnect the air hoses and flush the valve with water pressure.
Pour a cup of rock drill oil into the port and flush with air pressure
before reconnecting the air hoses to the Tram Valves. Hoses
size 0.75” diameter connects from the Tram Valves to 0.75”
bushings in the 1” ports in the air traction motors.
20.7 Pneumatic Gearmotor. Should contamination enter the
motor it will be necessary to disassemble the motor and clean the
vanes inside. The motor must be removed from the carrier to
clean. Remove bolts securing the motor to the frame and the
gearcase. If debris has entered the motor and damaged the
cylinder or rotor it may be necessary to send the motor to the
shop to disassemble and replace defective parts.
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20.8. Fittings and Hoses Supplying Booms. Pneumatic fittings
and hoses from the Air Receiver to the boom are 1” nominal
diameter and most likely would not be blocked by debris. If major
contamination has entered the air line it will be necessary to undo
ach of the sure lock quick connect couplings beginning from the
Air Receiver and progressively “blow” the air before reconnecting
each fitting
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20.9. Boom Lubricator and Hoses. The pneumatic fittings and
hoses on the boom are 1” nominal diameter and most likely would
not be blocked by debris. Debris can enter the ports in the
Lubricator on the boom and this should be checked by removing
the safety filler cap. To clear the hoses on the boom close the
supply at the receiver and break open the coupling beyond the
Lubricator. Blow the hose until visible fog from moisture stops.
Close valve at the Air Receiver.
20.10. Air Supply to the Boom. Compressed air is supplied to
the boom from the 1” air hose connected through the Boom
Lubricator to the Weldment on the boom. Air is supplied to the
Balance Cylinder Regulator that controls the Boom Lift Cylinder
from a “T” in the boom air supply through a 0.375 high pressure
hose to the 0.375” port in the Weldment holding the Regulator.
Blow the line by closing the valve on the air supply and removing
the hose from the Weldment.
20.11. Balance Cylinder Regulator. Should the valve not
function properly once the air line has been blown, the valve
should be replaced with a new valve. The valve can be removed
and returned to surface to be disassembled and cleaned. If the
Balance Cylinder Regulator Valve is not functioning properly the
Boom Cylinder can not maintain lift and the Boom will continue to
drop.
20.12. Boom Feed Control Air Supply. Compressed air enters
the drill through the air swivel assembly. The Swivel Assembly
contains a cone shaped filter to prevent access of large debris
particles however smaller particles can get through the mesh.
Should the screen become plugged and the drill continued in
operation gradual build up of pressure may cause the screen to
rupture and allow all the debris to enter the drill.
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20.12. Boom Feed Control Valves. All porting and orifices in
the Boom Feed Control Valves are 0.25” diameter. If the air
supply contains debris in excess of 0.25” these valves can
become plugged. Should the valves be constricted the feed
cylinder will not receive enough air to maintain proper feed
pressure on the drill. This can result in lack of penetration of the
drill and could lead to overheating the drill and burning the
lubrication in the drill resulting in failure.
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20.13. PHQ250 Rock Drill. The rockdrill contains many smaller
orifices and ports that are susceptible to becoming plugged
should the air supply be contaminated. Remove the Air Swivel
Connection Assembly and check the cone shaped screen inside
the JC45 for debris. If the interior of the drill has been
contaminated with debris it should be replaced and returned to
the shop for full repair. See: PHQ250 Jackleg Manual for
procedures.
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