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Steering and Lift/Lower Gear Pump Flow (Using Tester with Pressure Gauges and Flow Meter) FAN DRIVE MANIFOLD FILTER MANIFOLD FROM DECK MANIFOLDS TO MOW CIRCUIT TO MOW CIRCUIT 4WD MANIFOLD FROM DECK MOTORS FROM FRONT DECK MANIFOLD FROM RH DECK MANIFOLD COUNTERBALANCE MANIFOLD M1 M2 ST L TESTER P1 T P2 FROM RH DECK CIRCUIT Hydraulic System Page 4 - 54 Groundsmaster 4100--D
Procedure for Steering and Lift/Lower Gear Pump Flow Test Output from the steering and lift/lower gear pump section is equally divided by a proportional valve to provide flow to the steering circuit and the lift circuit. To test gear pump flow, testing of both steering and lift/lower circuits is required. Total gear pump flow is the combined flow from the two circuits. 1. Make sure hydraulic oil is at normal operating temperature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Park machine on a level surface with the cutting deck lowered and off. Make sure engine is off and the parking brake is engaged. Raise seat. CAUTION Prevent personal injury and/or damage to equipment. Read all WARNINGS, CAUTIONS and Pre<strong>caution</strong>s for Hydraulic Testing at the beginning of this section. 5. Start the engine and move throttle to full speed (2870 RPM). DO NOT engage the cutting deck. 6. While watching pressure gauges, slowly close flow control valve until 1000 PSI (69 bar) is obtained on gauge. Verify engine speed continues to be 2870 RPM. GAUGE READING TO BE: Flow approximately 7 GPM (26.3 LPM) at 1000 PSI (69 bar). 7. Stop engine and record test results. 8. If a pressure of 1000 PSI (69 bar) could not be obtained or flow is lower than 6GPM(22.3LPM)(85% of expected flow), check for restriction in pump intake line. If intake line is not restricted, consider that gear pump is worn or damaged. 9. When testing is complete, remove tester and reconnect hose to pump fitting. 2 3 Hydraulic System IMPORTANT: Make sure that the oil flow indicator arrow on the flow gauge is showing that the oil will flow from the pump section, through the tester and into the hydraulic hose. 3. With the engine off and cutting deck lowered, disconnect the hydraulic hose from the 90 o fitting in the third gear pump section which supplies the steering and lift/ lower circuits (Fig. 43). 4. Install tester in series between the fitting and the disconnected hose. Make sure the tester flow control valve is OPEN. IMPORTANT: The pump is a positive displacement type. If pump flow is completely restricted or stopped, damage to the pump, tester or other components could occur. 4 1. Gear pump 2. Fan drive manifold 1 Figure 43 3. Steering/lift hose 4. 90 o fitting Groundsmaster 4100--D Page 4 - 55 Hydraulic System
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Part No. 08162SL (Rev. A) Service M
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Table Of Contents Chapter 1 - Safet
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Table of Contents GENERAL SAFETY IN
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Maintenance and Service 1. Before s
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Safety and Instruction Decals Numer
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Chapter 2 Table of Contents Product
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Torque Specifications Recommended f
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Standard Torque for Dry, Zinc Plate
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Chapter 3 Kubota Diesel Engine Tabl
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Specifications Item Make / Designat
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Removal (Fig. 1) 1. Park machine on
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Removal (Fig. 5) CAUTION B The muff
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DANGER Because diesel fuel is highl
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Engine Removal (Fig. 9) 1. Park mac
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3. Slowly lower engine into the mac
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Coupler Removal (Fig. 16) NOTE: The
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Chapter 4 Hydraulic System Table of
Page 37 and 38: General Information Operator’s Ma
Page 39 and 40: Hydraulic Hose and Tube Installatio
Page 41 and 42: Adjustable Fitting (Fig. 8) 1. Make
Page 43 and 44: Hydraulic System This page is inten
Page 45 and 46: Traction Circuit: 4WD (Mow) The tra
Page 47 and 48: Traction Circuit: Transport (2WD) T
Page 49 and 50: Lower Cutting Deck A four section g
Page 51 and 52: Raise Cutting Deck A four section g
Page 53 and 54: Mow Circuit Hydraulic flow for the
Page 57 and 58: Steering Circuit A four section gea
Page 59 and 60: Engine Cooling Fan Circuit A four s
Page 61 and 62: Hydraulic Test Fitting Kit This kit
Page 63 and 64: Problem Traction power is lost or u
Page 65 and 66: Testing The most effective method f
Page 67 and 68: Procedure for Traction Circuit Char
Page 69 and 70: Procedure for Traction Circuit Reli
Page 71 and 72: Procedure for Counterbalance Pressu
Page 73 and 74: Procedure for Rear Traction Circuit
Page 75 and 76: Procedure for Traction Circuit Redu
Page 77 and 78: Procedure for Cutting Deck Circuit
Page 79 and 80: Procedure for Cutting Deck Manifold
Page 81 and 82: Procedure for Cutting Deck Gear Pum
Page 83 and 84: Procedure for Cutting Deck Motor Ca
Page 85 and 86: Procedure for Steering Circuit Reli
Page 87: Procedure for Lift/Lower Circuit Re
Page 91 and 92: Procedure for Engine Cooling Fan Ci
Page 93 and 94: Procedure for Engine Cooling Fan Ci
Page 95 and 96: Service and Repairs General Precaut
Page 97 and 98: Charge Hydraulic System NOTE: When
Page 99 and 100: NOTE: The front frame needs to be l
Page 101 and 102: Removal (Fig. 48) CAUTION The radia
Page 103 and 104: Removal (Fig 49) 1. Park machine on
Page 105 and 106: IMPORTANT: Use caution when clampin
Page 109 and 110: Removal (Fig. 53) 1. Park machine o
Page 119 and 120: Removal (Fig. 59) NOTE: The ports o
Page 121 and 122: 4WD Manifold Service (Fig. 60) 1. M
Page 123 and 124: Removal (Fig. 61) 1. Read the Gener
Page 125 and 126: Filter Manifold Service (Fig. 62) F
Page 131 and 132: CAUTION The centering springs are u
Page 135 and 136: Disassembly (Fig. 68) 1. Pump oil o
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8. Remove and discard back--up gask
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Hydraulic System This page is inten
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Removal (Fig. 75) 1. Read the Gener
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Fan Drive Manifold Service (Fig. 76
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Cutting Deck Motor Removal 1. Park
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IMPORTANT: Mark the relative positi
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Removal (Fig. 85) NOTE: The ports o
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PTO Manifold Service (Fig. 86) For
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Removal (Fig. 88) 1. Park machine o
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Disassembly (Fig. 89) 1. Plug all p
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Disassembly (Figs. 92 and 93) 1. Re
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Removal (Fig. 94) 1. Read the Gener
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Chapter 5 Electrical System Table o
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Special Tools Order special tools f
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Troubleshooting CAUTION Remove all
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Cutting Deck Operating Problems The
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Adjustments Wing Deck Position Swit
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Component Testing For accurate resi
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Warning Lights Engine Oil Pressure
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Transport / 4WD Switch The transpor
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Seat Switch The seat switch is norm
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Hour Meter The hour meter is locate
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Start, Engine Shutdown, Seat, Alarm
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TEC -5002 Controller Groundsmaster
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Fuel Gauge The fuel gauge can be te
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Glow Controller The glow controller
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Dual Temperature Switch The dual te
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Traction Neutral Switch The tractio
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Fusible Links The Groundsmaster 410
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Cutting Deck Raise and Lower Switch
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Service and Repairs NOTE: For engin
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2. Conduct a hydrometer test of the
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Chapter 6 Axles, Planetaries and Br
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General Information Operator’s Ma
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3. Chock rear wheels and jack up fr
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This page is intentionally blank. A
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NOTE: The planetary wheel drive ass
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This page is intentionally blank. A
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8. Remove cap screw and flange nut
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Bevel Gear Case and Axle Case The f
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Bevel Gear Case and Axle Case Insta
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9. Remove the bevel gear case/axle
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Axle Shafts The following procedure
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7. Secure the lock nut with the sta
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Differential Gear Inspection 1. Mea
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Pinion Gear to Ring Gear Engagement
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Chapter 7 Chassis Table of Contents
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Disassembly (Fig. 1) 1. Park machin
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CAUTION When changing attachments,
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Disassembly (Fig. 8) 1. Disassemble
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NOTE: Most of the seat suspension c
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Removal 1. Park machine on a level
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Chapter 8 Cutting Deck Table of Con
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General Information CAUTION Never i
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This page is intentionally blank. C
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Removal (Fig. 1) 1. Position machin
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Removal (Fig. 6) 1. Position machin
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Cutting Deck Link Service Disassemb
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Installation (Fig. 13) 1. Position
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2. Install outer bearing spacer int
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Disassembly (Fig. 22) 1. Park machi
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Chapter 9 Foldout Drawings Table of
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CENTER DECK MANIFOLD COUNTERBALANCE
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CONTINUES FROM SHEET 1 CONTINUES FR
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CONTINUES TO SHEET 2 CONTINUES TO S
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CONTINUES TO SHEET 2 WHEN THE PTO S
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CONTINUES TO SHEET 2 CONTINUES TO S
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YELLOW GRAY YELLOW/BLACK VIOLET WHI
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FLOW DIVIDER SOLENOID Groundsmaster
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(STARTER) (STARTER) (STARTER) Groun
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BLUE GRAY VIOLET BLACK YELLOW GRAY
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