Table of Contents
Advertisement
Trailer 12V/24V Electrical System
The operator is required to connect the towing vehicle
electrical cable plug with the semitrailer electrical
receptacle in order for the lighting system to function.
It is necessary that the tractor blue wire be connected to
the appropriate electrical source on the tractor.
Hydraulic
Controls are located on the driver's side of the trailer. The
trailer hydraulic power center must be activated before
any hydraulic controls can function. The hydraulic system
is designed to operate at 2000 psi maximum pressure
and approximately 9 gpm flow capacity.
OPERATING INSTRUCTIONS
Pre-Coupling of Semitrailer and
Tractor
1. Slowly back the tractor/truck (towing vehicle) up to
the front end of the semitrailer so the kingpin of the
semitrailer is centered between the tractor fifth wheel
jaws. Stop the towing vehicle just inches ahead of the
semitrailer. Set tractor parking brake.
2. Check the semitrailer king pin plate. It should be in a
horizontal position. The king pin plate should be the
same height, to slightly lower, than the latch area of
the fifth wheel plate of the towing vehicle. If
necessary, use the trailer landing gear, or start the
semitrailer hydraulic power engine. Use the landing
gear TRAILER LIFT lever to raise or lower the
kingpin plate sufficiently to set proper coupling height
(See "Individual operation of the outriggers can
be controlled by each single lever." on page 3-9.)
Drain all air and moisture from the towing vehicle air
brake system following towing vehicle manufacturer's
instructions.
3. Connect the service and emergency air hoses of the
towing vehicle to their respective gladhand on the
front of the semitrailer; red emergency line to the
gladhand with the "EMERGENCY" tag, and the blue
service line to the gladhand with the "SERVICE" tag
(See Figure 3-2.) Chock the semitrailer wheels
before activating the semitrailer air supply valve in
the towing vehicle. Set the parking brakes.
Failure to chock semitrailer wheels could allow
movement of the semitrailer resulting in serious
personal injury, death, or damage to property in
its path.
4. Check the air brake operations of the semitrailer as
follows:
a. Apply brakes and inspect brake action on all
wheels for prompt application.
b. Release brakes. All brakes should release
immediately. Air pressure should discharge
quickly from the relay emergency valve.
c. Disconnect the emergency air line from the
semitrailer gladhand. Trailer brakes should
promptly set.
d. Re-connect the emergency air line to the
semitrailer and activate the semitrailer air supply
valve. The semitrailer brakes should set.
WARNING
3-3
Advertisement
Table of Contents
