BC Transit â Air Brake Course

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Combination Truck and Trailer with Spring <strong>Brake</strong>s Blended air from the two-way check valve (22) flows to the trailer supply valve (24). From there, to the tractor protection valve (23). The lower line (20) carries reservoir air (supply line), the upper line (20) is the service line carrying application air as needed. The trailer is coupled in the usual way with standard glad hand couplers. The foot valve (6) and hand valve (21) are as they were in the single circuit system studied earlier. ...next slide... 196
Combination Truck and Trailer with Spring <strong>Brake</strong>s (continued) The tractor incorporates two relay valves (14). One relay valve is piped into the primary service brakes, the other is piped into the park brake system (allows quicker application and release of the park brake.) The modulator valve (27) is situated in the centre of the diagram. There is a front brake limiting valve (17) in the centre of the front axle. …next slide... 197
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BC Transit - Air Brake Course Prese
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BC Transit - Air Brake Course 1. Ai
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BC Transit - Air Brake Course 1. Ai
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BC Transit - Air Brake Course 2. De
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The final factor that will determin
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Weight - Speed - Distance When weig
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Perception Time (See-Think) Percept
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4/10 sec. Brake Lag (mechanical lag
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Stopping Distance…(total stopping
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Apply the principal from the previo
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Using Compressed Air to Our Advanta
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Combining mechanical advantage to a
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As the driver applies the brake ped
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Review Questions: Section 1 1) What
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BC Transit - Air Brake Course 3. Fi
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The Governor The governor may be co
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One-way Check Valve The one-way che
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Air Lines • Air lines link compre
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Safety Valve The Reservoirs One-way
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Air Gauges 60 50 40 70 80 85 90 100
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The Foot Valve The foot valve contr
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The Foundation Brakes: Brake Chambe
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Automatic Slack Adjusters Pre-Trip
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Brake Chambers and Slack Adjusters
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Review Questions: Section Three 1)
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BC Transit - Air Brake Course 4. Ba
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No. 2 GOVERNOR: tells compressor wh
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No. 4 AIR LINES: link air from one
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No. 11 BRAKE SHOES AND LININGS: sho
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No. 13 SLACK ADJUSTER: provides a m
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No. 15 BRAKE CHAMBER: part of force
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Quick Release Valve and Stop Light
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The Relay Valve The relay valve pro
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In this diagram, the dark green lin
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• Because the relay valve accesse
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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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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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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 (
Page 145 and 146: The Trailer Supply /Delivery Line T
Page 147 and 148: The Emergency Relay Valve The Emerg
Page 149 and 150: Foot Valve Application (trailer con
Page 151 and 152: Emergency Functions The following s
Page 153 and 154: Supply Line Rupture (trailer intact
Page 155 and 156: Supply Line Rupture (handling the s
Page 157 and 158: Service Line Rupture (continued) 1)
Page 159 and 160: Loss of Main Reservoir Air In this
Page 161 and 162: Supply & Service Lines Crossed (air
Page 163 and 164: Three Tests to Confirm Emergency Re
Page 165 and 166: Three Tests to Confirm Emergency Re
Page 167 and 168: Review Questions Section Six (Tract
Page 169 and 170: BC Transit - Air Brake Course 7. Du
Page 171 and 172: The Purpose of Dual Air Systems Dua
Page 173 and 174: Identifying Primary and Secondary C
Page 175 and 176: Primary and Secondary Systems (cont
Page 177 and 178: The Simple Dual Circuit System One-
Page 179 and 180: Secondary Air Loss (Foot Valve Appl
Page 181 and 182: Adding the Park Brake (spring brake
Page 183 and 184: Primary Air Loss and Park Brake Fun
Page 185 and 186: Enter the Modulator Valve The modul
Page 187 and 188: The Modulator Valve (secondary air
Page 189 and 190: The Modulator Valve (primary air lo
Page 191 and 192: The Modulator Valve (primary air lo
Page 193 and 194: Dual Air System Summary 1) The purp
Page 195: BC Transit - Air Brake Course 8. Du
Page 199 and 200: SYSTEM PARK TRAILER SUPPLY TRACTOR
Page 201 and 202: Combination Truck and Trailer (Supp
Page 203 and 204: Combination Truck and Trailer (mixe
Page 205 and 206: Combination Truck and Trailer (Prim
Page 207 and 208: Section Review - Dual Air - Tractor
Page 209 and 210: T-75 Off Highway System - Single Un
Page 211 and 212: L-75 Off Highway Combination with S
Page 213 and 214: Schedule SX Trailer (spring equippe
Page 215: Thank you for viewing this Air Brak
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BC Transit â Air Brake Course

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BC Transit â Air Brake Course