operators_manual

Table Of Contents
devices, diagnostic devices, and
monitoring devices.
Fifth Wheel Monthly Maintenance
Refer to specific manufacturer's
literature for any special
instructions
Steam clean the fifth wheel
Check lock guard operation using a
commercial lock tester
Clean and oil all moving parts
Lubricate the lock mechanism with
a lithium-base grease
All grease fittings (especially those
which grease the top surface of the
fifth wheel)
Fifth Wheel Bi-Annual Maintenance
NOTE
Whenever possible, torque all frame
fasteners
on the nut end, not the bolt
head.
Refer to specific manufacturer's
literature for any special
instructions.
Remove fifth wheel from vehicle.
Refer to the Shop Manual, "Fifth
Wheel Removal."
Steam clean the fifth wheel and
mounting brackets.
Check all moving parts for
excessive wear or damage.
Replace all worn or broken parts.
Complete two-month service
procedure.
Install fifth wheel. Refer to the
Shop Manual, "Fifth Wheel
Installation."
Tighten all frame fasteners with a torque
wrench. See Frame Fastener Torque
Requirements on page 306.
Sliding Fifth Wheels
Lubricate bearing surface of support
bracket through the grease fittings on the
side of the fifth wheel plate. Use a water
resistant lithium-base grease.
NOTE
The plate must be lifted up slightly to
relieve
the weight of the bracket while
applying grease.
Fuel System
Location of Fuel Shut-off Valves
Fuel shut-off valves for the fuel crossover
line are on the bottom of the secondary
fuel tank, at the crossover line connection.
They are optional on the primary fuel tank.
Specification
Use only diesel fuel as recommended by
engine manufacturers.
WARNING
Diesel fuel in the presence of an igni-
tion source could cause an explosion.
A mixture of gasoline or alcohol with
diesel fuel increases this risk of explo-
sion. DO NOT remove a fuel tank cap
near an open flame. Use only the fuel
and/or additives recommended for
your engine. Failure to comply may re-
sult in death, personal injury, equip-
ment or property damage.
MAINTENANCE - Fuel System
274 Y53-6110-1A1 (01/21)
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