freightliner 108SD, Руководство пользователя

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Air-Suspension Dump Valve
The air-suspension height switch may be used to aid
in connecting or disconnecting from a trailer. When
the switch is set to LOWER, the air-suspension
dump valve deflates the air springs to lower the rear
of the vehicle. In the normal position, the automatic
ride-control valves operate for normal driving.
NOTICE
Do not operate the vehicle over uneven ground
such as ramps, speed bumps, curbs, etc. with
the air springs deflated. Doing this may lead to
air bag separation from the piston, preventing the
suspension air springs from reinflating.
NOTICE
Never exhaust air from the suspension while
driving. When the air is exhausted, the suspen-
sion will not absorb road shocks, and compo-
nents may be damaged.
Holland Trailer Coupling
General Information
IMPORTANT: Refer to the Holland web site
(
www.hollandhitch.com ) for additional informa-
tion.
The Holland trailer coupling ( Fig. 18.1 ) is designed
for use with trailers having a maximum gross weight
of 49,000 lbs (22 226 kg). It is a swivel-mount pintle
hook designed for heavy-duty construction, utility,
and off-road applications. It is fastened to the rear
closing crossmember of the vehicle and is a non-air-
adjusted coupling.
Trailer Hookup
1. Chock the front and rear tires of the trailer.
2. Remove the cotter pin, then lift the lock and raise
the latch.
3.
Back the vehicle up until the drawbar eye is over
the horn of the pintle hook.
4.
Lower the trailer until the drawbar eye rests on
the pintle hook.
5. Close the latch, then insert the cotter pin.
NOTICE
Always make sure the connection hanger keeps
the trailer air hoses and electrical cables posi-
tioned so that they do not rub on anything. Rub-
bing may wear through hoses or cables, resulting
in air leaks, or exposed or broken wires, poten-
tially affecting trailer brake or electrical systems.
6. Connect the trailer electrical and air lines.
Trailer Release
1. Apply the truck and trailer parking brakes.
WARNING
Do not use the trailer air supply for parking trail-
ers not equipped with spring parking brakes.
This applies the trailer service brakes only. As air
bleeds from the trailer brake system, brake appli-
cation is lost. This could allow the unattended
vehicle to roll away, possibly resulting in serious
personal injury or death.
2. Chock the front and rear tires of the trailer.
3. Disconnect the trailer air and electrical lines.
Plug the air lines to keep them free of dirt.
4. Take the weight of the trailer drawbar off the
pintle hook.
5. Open the latch by first removing the cotter pin,
then lift up the lock and raise the latch.
12/08/2010 f311139
1
2
3
4
1. Lock
2. Cotter Pin
3. Latch
4. Pintle Hook
Fig. 18.1, Holland PH-760 Trailer Coupling
Trailer Couplings
18.1