ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
MAINTENANCE OF LUBRICATION SYSTEM.
Inspect Main Oil Filter Assemblies and By-pass Filter Assembly. See Figure 3-3. Check filter assemblies for
secure mounting and signs of leakage Check spin-on filter elements for leaks, rupture, or other damage. Service
by replacing filter elements at intervals Indicated In Table 3-1.
Inspect Drain Valve and Hose. See Figure 3-3. Inspect oil drain valve coupling, located on the right side of the
oil pan, for leaks. Inspect hose couplings and adapters for damage or leaks. Inspect hoses for deterioration.
Inspect Oil Level Sight Gage. Visually Inspect the oil level sight gage (Figure 3-3) for damage and security.
Maintenance of Oil Filler Cap.
(1) Inspect. Inspect the oil filler cap (Figure 3-3) for deterioration or damage.
(2) Replace. Remove defective oil filler cap and replace with a serviceable oil filler cap.
Inspect Lube Oil Lines. See Figure 3-3. Inspect hoses for wear, deterioration, or cracks. Inspect straight
adapters, pipe bushings, pipe adapters, pipe nipples, and pipe tees for leakage.
Maintenance of the Crankcase Breathers.
(1) Inspect. Visually Inspect the crankcase breathers (Figure 3-19) for security of installation. Check for clogged
hoses. Check for loose fittings.
Dry cleaning solvent, P-D-680, Type II, is flammable and moderately toxic to the
skin, eyes, and respiratory tract. Skin, eye, and respiratory protection Is required
to avoid injury to personnel.
(2) Service If necessary, remove and clean with cleaning solvent P-D-680, Type II, or equivalent.
(a) See Figure 3-19. Detach mounting clamps (3) by removing hexagon head capscrews (4), hexagonal
nuts (5), and lockwashers (6).
(b) Remove hose clamps (7) and detach hose (2) from hose fittings (8) and crankcase breathers (1).
(c) Remove capscrew (9), lockwasher (10), and flat washer (11) to remove crankcase breathers (1).
(a) Install crankcase breather (1) and secure with capscrew (9), lockwasher (10), and flat washer (11)
(b) Attach hose (2) to hose fittings (8) and crankcase breather (1) using hose clamps (7)
(c) Attach clamps (3) using hexagon head capscrews (4), hexagonal nuts (5), and lockwashers (6).
Inspect Lube Oil Heater. See Figure 3-3. Visually Inspect the oil heater H113 and lubricant temperature
thermostat S101 on the engine oil pan for secure mounting and electrical connections and for signs of
overheating or damage.
Inspect Prelube Pump. See Figure 1-5 and Figure 3-3. Check pump for secure mounting, loose electrical
connections, signs of damage, or leakage. Check that all hose connections to and from the pump are securely attached.