Demco CR 108, Руководство оператора

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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