BC Transit â Air Brake Course

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Review of Section Two In this section we have studied the concepts of: •Heat, Energy, Traction and Friction •Speed, Weight and Distance •How we obtain a Mechanical Advantage to achieve Force Multiplication •Compressing air, and combining this with Force Multiplication •Looked at Stopping Distance and how it can be effected by adverse conditions. The next section will begin our exploration of the components of the air brake system. Let’s Review... 30
Review Questions: Section 1 1) What is the final factor that will determine if a vehicle will move? 2) What is the final factor that will determine if a vehicle will stop? 3) How is the heat dissipated that is generated by the brakes? 4) If one set of brakes were poorly adjusted, what effect would this have on the remaining sets of brakes? 5) What is meant by the term friction? 6) What are the four components of stopping distance? 7) If the weight of your vehicle were doubled, how many times must the braking power be increased in order to stop in the same distance? If speed doubles? If both weight and speed were doubled? 8) <strong>Brake</strong>s stop the vehicle. Is this true or false? 4)…the 5)…the 8)… False. force other 6)…perception 3)…by Traction resisting brakes the 7)…two determines would brake movement 1) time, Traction 2) drums times; have Traction reaction if to between to four the do the vehicle’s time; more times; atmosphere two brake than eight surfaces brakes their lag; times share will in contact be of effective. braking braking distance Left click for answers 31
Page 1 and 2: BC Transit - Air Brake Course Prese
Page 3 and 4: BC Transit - Air Brake Course 1. Ai
Page 5 and 6: BC Transit - Air Brake Course 1. Ai
Page 7 and 8: BC Transit - Air Brake Course 2. De
Page 9 and 10: The final factor that will determin
Page 11 and 12: Weight - Speed - Distance When weig
Page 13 and 14: Perception Time (See-Think) Percept
Page 15 and 16: 4/10 sec. Brake Lag (mechanical lag
Page 17 and 18: Stopping Distance…(total stopping
Page 21 and 22: Apply the principal from the previo
Page 23 and 24: Using Compressed Air to Our Advanta
Page 27 and 28: Combining mechanical advantage to a
Page 29: As the driver applies the brake ped
Page 33 and 34: BC Transit - Air Brake Course 3. Fi
Page 35 and 36: The Governor The governor may be co
Page 37 and 38: One-way Check Valve The one-way che
Page 39 and 40: Air Lines • Air lines link compre
Page 41 and 42: Safety Valve The Reservoirs One-way
Page 43 and 44: Air Gauges 60 50 40 70 80 85 90 100
Page 47 and 48: The Foot Valve The foot valve contr
Page 49 and 50: The Foundation Brakes: Brake Chambe
Page 51 and 52: Automatic Slack Adjusters Pre-Trip
Page 53 and 54: Brake Chambers and Slack Adjusters
Page 57 and 58: Review Questions: Section Three 1)
Page 59 and 60: BC Transit - Air Brake Course 4. Ba
Page 61 and 62: No. 2 GOVERNOR: tells compressor wh
Page 63 and 64: No. 4 AIR LINES: link air from one
Page 65 and 66: No. 11 BRAKE SHOES AND LININGS: sho
Page 67 and 68: No. 13 SLACK ADJUSTER: provides a m
Page 69 and 70: No. 15 BRAKE CHAMBER: part of force
Page 71 and 72: Quick Release Valve and Stop Light
Page 73 and 74: The Relay Valve The relay valve pro
Page 75 and 76: In this diagram, the dark green lin
Page 77 and 78: • Because the relay valve accesse
Page 79 and 80: BC Transit - Air Brake Course 4. Ba
Page 81 and 82:
A spring type park brake serves thr
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However, some valves may be designe
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Park Brake and Service Brake Releas
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Park Brake Applied - Service Brake
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Mechanical Release of the Park Brak
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“Maxi-Brake” type Park Brake Th
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“Maxi-Brake” Operation (single
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Park brake systems with double cont
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Park Brake Emergency Functions... 1
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BC Transit - Air Brake Course 4. Ba
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No. 6 LOW AIR WARNING DEVICE: activ
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No. 8 RELAY VALVE: provides quicker
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Review of Section Four 6) Why is it
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BC Transit - Air Brake Course 5. Ot
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Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
ATC (Automatic Traction Control)
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Long Stroke Push Rods Many new air
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Disc Brakes Callipers Rotor …oper
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Wedge Brakes This type of brake use
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Section Six Single Circuit Tractor
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Parts of the Trailer (van style) 1)
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The “Fifth Wheel” The fifth whe
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Hooking Up (Step 2) A visual inspec
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Charging the Trailer Brake Reservoi
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The Semi-Trailer Ready for its Pre-
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Tractor-Trailer Trailer Air Brake S
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Introduction to Valves and Componen
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The Hand Valve The Hand Valve is mo
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The Tractor Protection Valve The Tr
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Accidental Hand Valve Application (
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The Trailer Supply /Delivery Line T
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The Emergency Relay Valve The Emerg
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Foot Valve Application (trailer con
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Emergency Functions The following s
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Supply Line Rupture (trailer intact
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Supply Line Rupture (handling the s
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Service Line Rupture (continued) 1)
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Loss of Main Reservoir Air In this
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Supply & Service Lines Crossed (air
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Three Tests to Confirm Emergency Re
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Three Tests to Confirm Emergency Re
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Review Questions Section Six (Tract
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BC Transit - Air Brake Course 7. Du
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The Purpose of Dual Air Systems Dua
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Identifying Primary and Secondary C
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Primary and Secondary Systems (cont
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The Simple Dual Circuit System One-
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Secondary Air Loss (Foot Valve Appl
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Adding the Park Brake (spring brake
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Primary Air Loss and Park Brake Fun
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Enter the Modulator Valve The modul
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The Modulator Valve (secondary air
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The Modulator Valve (primary air lo
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The Modulator Valve (primary air lo
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Dual Air System Summary 1) The purp
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BC Transit - Air Brake Course 8. Du
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Combination Truck and Trailer with
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SYSTEM PARK TRAILER SUPPLY TRACTOR
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Combination Truck and Trailer (Supp
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Combination Truck and Trailer (mixe
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Combination Truck and Trailer (Prim
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Section Review - Dual Air - Tractor
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T-75 Off Highway System - Single Un
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L-75 Off Highway Combination with S
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Schedule SX Trailer (spring equippe
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BC Transit â Air Brake Course