COUPLING GOOSENECK TO PRIME MOVER AND RAISING TRAILER (Continued).
Check to be sure that the neck base slide bar road lock (8) is in the locked position with the
rod end dropped into the rod hole.
(10) Allow air reservoirs to fill and charge the trailer air supply.
The trailer is equipped with a ECU/modulator valve that provides air to the
reservoirs first. The spring brakes will remain set until the air pressure
reaches 80 - 82 psi (551.6 kPa to 565.4 kPa), then the modulator portion of the
ECU/modulator valve allows air to begin flowing to release the spring brakes
and operate the service brakes.
(11) Check prime mover braking system for proper pedal pressure and application and release
Do not climb on trailer to operate the Hydraulic System Control Levers.
Failure to do so could result in injury to personnel. Use of step stool may
Trailer and prime mover may roll when the brakes are released. To prevent
injury to personnel or damage to equipment, the driver must remain in the
cab of the prime mover.
(12) Turn on the prime mover lights and check to make sure that all trailer clearance lights,
running lights and tail, turn signal, ABS and brake lights operate.
(13) With the hydraulic system pressurized, move the platform lever (2) to the up position to
raise the trailer bed to a position slightly above the desired height. Position the shims (10,
See pg. 2-32) in the appropriate slot to maintain the trailer height and lower the trailer bed
slightly to lock the shims in position.
(14) Move prime mover and trailer forward slowly and apply brakes to assure proper braking
action. The system is ready for operation.