Paccar 12-Speed, Operator'S Manual

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System Component Task I A B C D E
Main and
Auxiliary
Transmission Main and Auxiliary Transmission and
Transfer Case Inspect for visible damage, signs of
overheating, and leaks.
• •
Check the drain plugs for tightness. •
Mounting Brackets and Fasteners Check the condition of the fasteners and
their torque. Tighten to the specified
torque value as required.
•
Oil Cooler Clean the fins (air-to-oil type) and body.
Check the hose condition and for leaks:
replace as required.
•
Main and Auxiliary Transmission Check the oil level: refill as required. •
Main and Auxiliary Transmission (ON
HIGHWAY) Drain lubricant while warm. Flush each
unit with clean flushing oil.
500,000 miles/ 800,000 km
Main and Auxiliary Transmission (OFF
HIGHWAY) Drain lubricant while warm. Flush each
unit with clean flushing oil.
• •
Related concepts
Related reference
What is the Air System?
Important safety information about your
vehicle's air system.
The operation of the vehicle’s braking
system and many vehicle accessories
depends upon the storage and application
of a high-pressure air supply.
MAINTENANCE - What is the Air System?
Y53-1272-1B1 (08/17) 29
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