NOTESa.
c. Drive Shaft Slip Joints. When lubricating
spline end of propeller shafts, apply grease to spline
1. COLD TEMPERATURE OPERATION.
fitting until lubricant appears at pressure relief hole.
For operating of equipment in expected continu-
Cover hole with finger and continue adding grease
ous temperatures below 0F (-18C), remove lubri-
until it appears at sleeve yoke seal.
cants prescribed in the key for temperatures above
0F (-18C). Relubricate with lubricants specified
in the key for temperatures 0F to 50F (-18C to
d. Severe Operating Conditions. When ve-
-46C). After changing to OEA, drain one pint of oil
hicle is operating under severe conditions, lubricate
from oil sampling valve.
propeller shafts and universal joints every 50 hours.
2. CHASSIS.
e. Front Wheel Bearings. See
TM 9-2320-279-20 for bearing removal and installa-
gun, apply lubricant to the fitting until clean lubricant
tion.
squeezes out of the part being lubricated.
f. Pintle Hook Plate Lubrication Fitting. Can
be on any side.
WARNING
g. Spring Hangers. If spring hanger pin does
DO NOT START ENGINE OR MOVE VE-
not accept grease, relieve load on spring pin by
HICLE WHEN ANYONE IS UNDER VEHICLE
jacking vehicle up by frame rails as close to spring
OR WORKING ON BRAKE LINES. SEVERE
pin as possible. If spring pin still fails to take grease,
INJURY OR DEATH COULD RESULT.
notify Direct Support Maintenance to remove spring
b. Universal Joints. Use the proper lubricant
pin and/or bushing and replace if necessary.
to purge all four bearing seals of each universal
3. ENGINE, TRANSMISSION, HYDRAULIC
joint. This flushes abrasive contaminants from each
SYSTEM.
bearing and assures all four bearings are filled prop-
a. Cooling System Service.
erly. Pop the seals, these seals are made to be
See TM 9-2320-279-10. Coolant level should be up
popped.
to bottom of filler neck. Add 3% ratio by volume of
If any seals fail to purge, move propeller shaft
corrosion inhibitor to cooling system.
from side-to-side while applying gun pressure. This
allows greater clearance on thrust end of bearing
b. Transmissions. Operate engine 1 minute at
that is not purging. If seals still do not purge, rock
1000 RPM, then idle until engine temperature
vehicle by releasing the parking brake, start engine,
reaches 60-120_F (16-49_C). With engine idling,
put transmission in D or R, and allow vehicle to roll.
check transmission dipstick. If oil level is on or be-
This removes the windup in the drive line and allows
low COLD RUN line, add oil. Approximately 1 Qt
for a greater clearance on the thrust end of the uni-
(0.9L) of oil is required to bring oil level from bottom
versal joint. Because of the design of the universal
of COLD RUN band to middle of COLD RUN band.
joint seal, there will occasionally be one or more
See TM 9-2320-279-20.
bearing seals of a joint that may not purge. Seal ten-
c. Crankcase. Check oil level with vehicle
sion then has to be released. The procedure for re-
parked on level ground and the engine off and cool.
leasing seal tension is as follows.
Do not over fill. Drain crankcase when hot.
NOTE
Universal joint may have one or two grease fit-
d. Engine Oil Filter. Oil filter(s) shall be ser-
tings. If there are two grease fittings, either fit-
viced/cleaned/changed, as applicable, when they
ting can be greased. It is not necessary to
are known to be contaminated, clogged or service
grease both fittings.
is recommended by AOAP laboratory analysis or at
prescribed hardtime intervals of 3,000 miles (4 800
Loosen bolts holding bearing assembly that does
kilometers) or 6 months, whichever occurs first.
not purge to release seal tension. It may be neces-
When oil samples are rejected and the AOAP rec-
sary to loosen bearing assembly approximately
ommends changing lubricant and filter(s), hardtime
1/16-inch minimum. If loosening does not result in
filter service clock restarts at "0". After installing
purging, remove bearing assembly to determine
new filter elements, fill crankcase; operate engine
cause of blockage.
5 minutes and check housing for leaks. Shut down
NOTE
engine; check crankcase oil level and bring to full
When sure of proper lubrication, run bolts
mark.
down until bearing plates are flush to yoke
e. Army Oil Analysis Program (AOAP). Refer
races, then back off slightly. Retighten to
to TB 43-0210 for sampling requirements.
torque specifications. Bend tabs against sides
of bolt heads to lock bolts in place.
LO 9-2320-279-12
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