LO 5-4310-452-12
7. WHEEL BEARINGS. Clean, inspect and repack
NOTES
wheel bearings every six months. Raise and
support tire securely off the ground. Remove
1. FUEL FI LTER. Remove filter, clean mounting
tire and wheel assembly. Remove dust cap,
base. Apply film of oil to new filter gasket.
cotter pin, nut, washer, and outer bearing.
Install new filter until gasket contacts base,
Remove brake drum. Use seal puller to remove
then turn an additional 3/4 turn. Air-vent fuel
grease seal. Remove inner bearing. Repack
system.
bearings using wheel bearing grease conforming
2. ENGINE OIL FILTER. Remove filter, clean
to Specification MlL-G-10924. Install inner
mounting base. Apply film of engine oil to
bearing and new grease seal. Place brake drum
new filter gasket. Install new filter until gasket
over spindle and install outer bearing, washer
contacts base, then turn an additional 3/4 turn.
and nut. Tighten nut to specifications and in-
stall cotter pin. Replace dust cap and tire.
3. ENGINE OIL LEVEL AND CRANKCASE.
Repeat procedure for remaining wheels.
Check oil level daily. Change engine crankcase
oil every 250 operating hours when fuel sul-
8. BRAKE FLUID RESERVOIR. Fill to within
phur content is 0.5% or less. Change 011 every
1/4 in of top opening with Silicon brake fluid
125 hours when fuel sulphur content is greater
conforming to MIL-B-46176.
than 0.5%. Remove three screws and drain
cover. Remove drain plug and allow oil to
9. OIL COOLER. To drain oil from cooler, open
drain. Replace oil filter (Note 2). Install drain
vent plug and remove drain plug.
plug and drain cover. Fill crankcase. Run en-
gine at low idle for 5 minutes. Stop engine and
10. HOSE REELS. Before lubrication, depressurize
recheck oil level.
the entire air system with engine off. High
pressure may be present on hose reel grease
fittings.
4. COMPRESSOR OIL FILTER. Remove filter.
Clean mounting base. Apply film of engine oil
Copy of this Lubrication Order will remain with
to new filter gasket. Install new filter until
the equipment at all times; instructions
gasket contacts base, then turn an additional
contained herein are mandatory.
3/4 turn.
By Order of the Secretaries of the Army and the
5. COMPRESSOR OIL TANK. Air receiver sys- Marine Corps:
tern must be completely relieved of all air
CARL E. VUONO
pressure before servicing. Check oil level daily.
General, United States Army
Add oil only if the level falls to the bottom of
Chief of Staff
the sight gauge when the unit is not running.
Make sure that the compressor oil level is Official:
never above the top of sight gauge. To drain
R.L. DILWORTH
tank; remove plug, open valve and allow tank
Brigadier General, United States Army
to drain. Close valve and install plug. Remove
The Adjutant General
fill cap and fill tank with oil. Replace cap and
run compressor for 5 minutes. Stop engine and
check oil level.
J.J. WENT
Lieutenant General, USMC
6. WATER SEPARATOR. To drain water, loosen Deputy Chief of Staff for Installations and
drain screw through one or two turns. To Logistics
replace filter element, remove drain hose and ARMY: To be distributed in accordance with DA
unscrew filter and bowl assembly. Clean Form 12-25A Operator, Unit and Direct and
mounting base. Remove bowl from old filter General Support Maintenance requirements for
and clean bowl. Install bowl and new O-ring to Compressor, Rotary Air, DED 250 CFM, 100 PSI,
bottom of new filter element. Apply film of oil T r a i l e r Mounted, Ingersoll-Rand MDL
to new filter gasket. Install new filter until gas-
P250-W DM-H268.
ket contacts base, then turn an additional 3/4
turn. Attach drain hose and air-vent system. USMC:AJG
PIN: 062197-000
CARD 8 OF 8
