Kenworth T410, Driver'S Handbook Manual

Page: 225 / 418

CAT: 8612 November 2019 Page 199
OPERATING INSTRUCTIONS
FIFTH WHEEL LUBRICATION
Frequently operate and lubricate movable or sliding fifth wheels to prevent
corrosion.
Both the fifth wheel plate and the slide tracks (if a slider) should be
cleaned and lubricated periodically to ensure smooth turning and sliding
action. Failure to keep these surfaces lubricated can lead to frame and/
or driveline damage.
Apply a water-resistant lithium base grease to the trailer contact surface of
the fifth wheel. Apply same to the bearing surface of the support bracket
through the grease fittings on the side of the fifth wheel plate.
The plate must be lifted up slightly to relieve weight on the bracket while
applying grease.
Where fitted, do not grease Teflon fifth wheel wear plates.
TOW HITCH
Your vehicle may be fitted with a tow hitch. This is only designed to be
used in an emergency. The tow hitch is only designed to tow an unladen
prime mover.
DO NOT ATTEMPT TO TOW A FULLY LADEN VEHICLE USING A TOW
HITCH. The tow hitch could snap causing damage to either or both
vehicles, resulting in an accident or injury to yourself and/or others
plus property damage.
TOWING
All lubricating and transmission application oil pressure is provided by an
engine-driven pump. This pump cannot be ‘motored’ by pushing or towing
the vehicle when the engine is stopped. Whenever the vehicle must be
towed, the driveline must be disconnected or the driving wheels must
be lifted off the ground.
To prevent transmission damage when towing a truck, disconnect
the driveshaft at the rear U-joint.
Transmission damage occurs rapidly when towing with the driveshaft
connected because the transmission countershaft is stationary and no
lubricant reaches the main shaft gears and bearings.
Worse, when vehicles are towed at an angle from the front, either by
wrecker or piggy-back, the lubricant usually in the top front of a drive axle
will drain to the rear, leaving these top components dry.