PART 8: MAINTENANCE AND SERVICE
PB1319 (CAT. NO. 5296 ) —121— 22-01691 (R02/02)
Oil Changes
An initial oil change and flush should be performed after the transmis-
sion has been placed in actual service. This change should be made
any time after 3000 miles (4800 km) but never longer than 5000 miles
(8000 km) of over-the-road service. In off-highway use, the change
should be made after 24 hours but before 100 hours of service have
elapsed.
Refilling
Remove all dirt around filler plug. Refill with new oil of the grade rec-
ommended for the existing season and prevailing service. Fill to the
bottom of the level testing plug positioned on the side of the transmis-
sion. Do not overfill the transmission. Overfilling usually results in oil
breakdown due to excessive heat and aeration from the churning
action of the gears. Early breakdown of the oil will result in heavy var-
nish and sludge deposits that plug up oil ports and build up on the
splines and bearings. Overflow of oil can also escape onto clutch or
parking brakes. When adding oil, do not mix different types of oil.
CAUTION: When adding oil, types and brands of oil should
not be intermixed because of possible incompatibility,
which could decrease the effectiveness of the lubrication
or cause component failure.
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