1. M915A2 FRONT AXLE WHEEL
BEARINGS. Daily, check that level of
gear lubricating oil is visible in sight
glass. If oil is not visible, remove rub-
ber plug and add GO until level is even
with plug opening. Install rubber plug.
2. POWER STEERING RESER-
VOIR. Daily, with engine running and
fluid at operating temperature, remove
dipstick from reservoir and check level
of lubricating oil on dipstick. Add OE/
HDO to bring level above the ADD
mark on dipstick.
3. FIFTH WHEEL (ALL EXCEPT
M917A1 AND M917A1 W/MCS).
Dry cleaning solvent, P-D-680,
is toxic and flammable. Always
wear protective goggles and
gloves, and use only in a
well-ventilated area. Avoid con-
tact with skin, eyes, and
clothes, and DO NOT breathe
vapors. DO NOT use near open
flame or excessive heat. The
100°F-138°F (38°C-59°C). If you
become dizzy while using
cleaning solvent, immediately
get fresh air and medical help.
If solvent contacts eyes, imme-
diately wash your eyes and get
Weekly or on-condition, apply GAA to
top plate, latch mechanism, slider rails,
locking plungers, and all lubrication fit-
tings. Clean and lubricate moving
parts on underside with dry cleaning
solvent and OE/HDO.
Let radiator cool before remov-
ing cap. Remove cap in two
steps. First place thick cloth
over cap and slowly turn cap
left to its first stop; pause, and
allow pressure to escape from
cooling system. Then turn cap
further left until you can
remove it. Failure to follow this
procedure can result In serious
Daily, with engine cool, remove radia-
tor cap. Check level of coolant in radia-
tor. Coolant must be within 2 1/2 in.
(6.4 cm) below filler neck. Add coolant
to correct level. Install radiator cap.
5. ENGINE CRANKCASE. Daily,
check level of lubricating oil. Wait 10
minutes after shutting down engine to
allow oil to drain back into crankcase.
To ensure an accurate reading, vehi-
cle must be parked on level ground.
Safe operating level is between ADD
and FULL marks on dipstick. As
required, add OE/HDO through filler
opening. DO NOT overfill.
COLD OIL CHECK (COLD RUN
BAND). Run engine for one minute at
1000 rpm to charge the system. Idle
engine until transmission reaches
60°-120°F (16°-49°C). With engine
idling and transmission in Neutral (N),
remove dipstick from oil filler tube and
check oil level. Oil registering in the
COLD RUN band indicates a sufficient
quantity of oil to safely operate the
transmission until temperature
reaches 160°-200°F (71°-93°C). When
temperature reaches 160°-200°F
(71°-93°C), a hot oil check must be