ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12
Section X. UNIT MAINTENANCE OF THE ENGINE LUBRICATION SYSTEM
4-44 GENERAL. The oil pan serves as a cover for the bottom of the crankcase and, also, as a reservoir for engine
lubricating oil. It is equipped with a bayonet type oil gauge which is used to measure the oil level in the pan. Oil is
drawn into a gear type, positive displacement pump through a large screen which prevents the entry of coarse abra-
sive. The oil pump forces the oil through a full flow type oil filter which removes minute abrasive particles. A pressure
transmitter, located between the oil pump and oil filter, measures the pump output pressure and transmits it electri-
cally to the engine oil pressure gauge. From the oil filter, the oil enters the header, a drilled passage in the engine
block A pressure switch measures the oil pressure in the header and automatically shuts down the engine if the
pressure falls to a dangerously low level. From the header, the oil is distributed to the internal moving parts of the
engine. No unit maintenance is allocated for the oil pan and oil pump. Refer to paragraph 4-22 for unit maintenance
of the oil pressure transmitter and to paragraph 4-23 for unit maintenance of the low oil pressure switch.
4-45 LUBRICATION OF OIL FILTER ASSEMBLY.
a.
Removal.
(1) Remove drain plug (1, Figure 4-27) and allow the oil to drain into a suitable container.
(2) Disconnect hose assemblies (2 and 3) from the filter assembly.
(3) Remove nuts (4), lockwashers (5), flat washers (6) and screws (7).
(4) Do not remove screws (8), lockwashers (9) and mounting bracket (10) unless inspection reveals
damage.
b. Disassembly.
(1) Remove elbows (11 and 12).
(2) Remove square nut (13), flat washer (l4) and screw (15) to remove damp (16) from filter assembly (17).
(3) Refer to paragraph 4-4 and disassemble the oil filter assembly.
c.
Cleaning and Inspection.
(1) Clean oil filter assembly parts with dry cleaning solvent (Federal Specification P-D-680).
(2) Inspect mounting bracket (10) for cracks, corrosion, and other damage.
(3) Inspect oil line assemblies for dogging, deterioration, or other damage.
(4) Check all threads for stripping or other damage.
d.
Repair. Repair of oil filter assembly is limited to replacement of defective parts.
e.
Assembly.
(1) Refer to paragraph 4-4 and assemble oil filter assembly.
(2) Install elbows (11 and 12) into filter assembly (17).
(3) Insert oil filter assembly (17) into clamp (16).
(4) Install screw (15), flat washer (14) and square nut (13). Tighten screw securely.
f.
Installation. After installation, refer to Figure 2-8 and run engine while checking oil level. Check for leaks.
(1) Install mounting bracket (10), lockwashers (9), and screws (8).
(2) Install screws (7), flat washers (6), lockwashers (5), and nuts (4).
(3) Reconnect hose assemblies (3 and 2) onto the filter assembly.
(4) Install drain plug (1) into oil filter assembly (17) and refill.
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