Peterbilt 579 Operator's Manual page 259

SYSTEM COMPONENT
Main and Main and auxiliary
auxiliary transmission and transfer
transmission case
Mounting Brackets and
Fasteners
Oil cooler
Main and aux. transmission Check the oil level; refill as required.
Main and auxiliary
transmission (ON
HIGHWAY)
Main and auxiliary
transmission (OFF
HIGHWAY)
Auxiliary Cotta Transfer Case
transmission
TR2205
Fabco Transfer Case
TC142/TC143/TC170/
TC270
Marmon-Harrington
Transfer Case
MVG2000/MVG2000SD
(04/13)
PREVENTIVE MAINTENANCE (PM) INTERVALS
MAINTENANCE TASK
Inspect for visible damage, signs of overheating, and leaks.
Check the drain plugs for tightness.
Check the condition of the fasteners and their torque. Tighten
to the specified torque value as required.
Clean the fins (air-to-oil type) and body. Check the hose
condition and for leaks; replace as required.
Drain lubricant while warm. Flush each unit with clean flushing
oil.
Drain lubricant while warm. Flush each unit with clean flushing
oil.
Inspect: Check oil level; inspect for leaks and any visible
damage.
Initial oil change: Drain oil while warm; flush case with gear
oil-compatible fluid; clean magnetic drain plug; refill. Do not
flush the case with any solvent.
Change oil.
Y53-6047–2C
PREVENTIVE MAINTENANCE SCHEDULE
I
X
X
X
Recommended PM Interval
A B C D E
X
X
X
X
X
500,000 miles/ 800,000 km
X
X
X
X
5-23
5