Unit Level Preventive Maintenance
Checks and Services HMMWV(Cont&.
ITEM TO BE
NOT FULLY MISSION
Use Dexrone III for filling transfer
case. Failure to use Dexrone III may
cause damage to transfer case.
c. Check transfer case fluid level every
3,000 mi (4,800 km) or semiannually,
whichever occurs first. Remove fill plug
and gasket. Level should he within l/2 in.
(12.7 mm) of fill plug opening when
vehicle is on level ground. Install fill plug
and gasket, and tighten to 35 lbft (47 N-m).
CHECK AND FILL PLUG
Do not over-torque retaining nuts.
d. Inspect oil cooler lines for leaks. Check
d. Any class III oil
for loose oil cooler line nuts. If loose, hold
oil cooler line stationary and, using a
pound-inch torque wrench, tighten line
nuts to 192-216 lb-in. (22-24 N-m).