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Page Title:
Section III. ENGINE BASE AND OIL PUMP |
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 TM10-4320-202-15
Section Ill. ENGINE BASE AND OIL PUMP
b. Cleaning and Inspection.
6 - 5 . General
(1) Clean all parts with approved clean-
The engine base covers the bottom of the
ing solvent and dry thoroughly with a clean
e n g i n e and provides a mounting for the
cloth.
engine. The oil pump and trough-like body
(2) Inspect the oil pump. Check balls
are mounted on the base within the engine.
for dents, scoring, out-of-roundness, and other
The oil pump maintains a constant oil level
damage.
in the trough. A projection on the connecting
(3) Inspect the plunger for scoring, wear
rod cap dips into the oil and causes splashing
or distortion.
with every revolution of the crankshaft. This
(4) Inspect all other parts for cracks,
splashing lubricates all internal working parts
wear, distortion or other damage.
of the engine. The power to operate the oil
c. Reassembly and Installation.
pump is derived from the crankshaft through
a push rod.
(1) Reassemble the oil pump into the
base in the reverse of the numerical sequence
as illustrated in figure 6-3. Fill the base sump
6-6. Engine Base and Oil Pump
with oil and work the plunger up and down
a. Removal and Disassembly.
to insure that the pump draws oil into the oil
(1) Remove engine (para 3-48).
pump body to maintain a full oil pump body.
(2) Install the engine base on the
(2) Remove engine from base and oil
engine.
pump in numerical sequence illustrated in
(3) Install the engine (para 348).
6-5
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