17
Step 6.
Check Trailer Height
• The trailer should be low enough that it is raised slightly by the
tractor when the tractor is backed under it. Raise or lower the
trailer as needed. (If trailer is too low, tractor may strike and
damage nose of trailer; if trailer is too high, it may not couple
correctly.)
• Check that the kingpin and fifth wheel are aligned.
Step 7.
Connect Air Lines to Trailer
• Check glad hand seals and connect tractor supply (emergency) air
line to trailer supply (emergency) glad hand.
• Check glad hand seals and connect tractor control (service) air
line to trailer control (service) glad hand.
• Make sure air lines are safely supported where they won’t be
crushed or caught while tractor is backing under the trailer.
Step 8.
Supply Air to Trailer
• From cab, push in “air supply” knob or move tractor
protection valve control from the “emergency” to the “normal”
position to supply air to the trailer brake system.
• Wait until the air pressure is normal.
• Check brake system for crossed air lines.
• Shut engine off so you can hear the brakes.
• Apply and release trailer brakes, listen for sound of trailer
brakes being applied and released. You should hear the
brakes move when applied and air escape when the brakes
are released.
• Check air brake system pressure gauge for signs of major air
loss.
• When you are sure trailer brakes are working, start engine.
• Make sure air pressure is up to normal.
Step 9.
Lock Trailer Brakes
• Pull out the “air supply” knob, or move the tractor protection valve
control from “normal” to “emergency.”
Step 10.
Back Under Trailer
• Use lowest reverse gear.
• Back tractor slowly under trailer to avoid hitting the kingpin too
hard.
• Stop when the kingpin is locked into the fifth wheel.
Coupling and Uncoupling
Summary of Contents for CR 108
Page 29: ...Installation Service Manual for 2S 1M Systems PLC Select ABS 1M Page 12 Rev 6 0...
Page 43: ...43 Suspension Torque Specifications...
Page 50: ...50 SS 102 4LS Tandem Leaf Spring Converter Dolly...
Page 56: ...56 Converter Dolly Tongue 33 1 2 Assembled...
Page 58: ...58 Converter Dolly Tongue 33 1 2 Assembled...
Page 60: ...60 Converter Dolly Tongue 78 Assembled...
Page 62: ...62 Converter Dolly Tongue 78 Assembled...
Page 64: ...64 Converter Dolly Tongue 108 Assembled...
Page 66: ...66 Converter Dolly Tongue 108 Assembled...
Page 68: ...68 Converter Dolly Tongue 120 Assembled...
Page 70: ...70 Converter Dolly Tongue 120 Assembled 4 40 4 40...
Page 72: ...72 Converter Dolly Tongue 133 Assembled...
Page 74: ...74 Converter Dolly Tongue 133 Assembled 4 40 4 40...
Page 78: ...78 Hutch Single Point Suspension Parts...
Page 79: ...79 7700 9700 4 Spring Series Maintenance Procedures...
Page 80: ...80 7700 9700 4 Spring Series Maintenance Procedures...
Page 81: ...81 7700 9700 4 Spring Series Maintenance Procedures...
Page 82: ...82 7700 9700 4 Spring Series Maintenance Procedures...
Page 83: ...83 7700 9700 4 Spring Series Maintenance Procedures...
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