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TM 5-2420-222-34
3-21. ENGINE OIL PUMP MAINTENANCE.
This Task Covers:
a.
Removal
d.
Assembly
b.
Disassembly
e.
Installation
c.
Cleaning and Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Timing gear cover removed (see paragraph 3-18).
•
Engine oil (Item 25, Appendix B)
•
Engine oil pan removed (see paragraph 3-20).
•
Rags (Item 28, Appendix B)
•
Dry cleaning solvent (Item 31,
Appendix B)
Tools/Test Equipment:
•
One jamnut
•
Two preformed packings
Tools/Test Equipment:
•
Four lockwasher
•
General mechanic's tool kit
•
Field automotive shop set
•
Timing alinement tool
General Safety Instructions:
•
Dry cleaning solvent is flammable
and must not be used near open
flame. Use only in a well-
ventilated area.
a.
REMOVAL
1.
Wedge a clean rag between spur gear (4) and left control cam spur gear (3). Remove jamnut (5) from spur gear
and drive shaft (6). Discard jamnut.
2.
Pry spur gear (4) off drive shaft (6).
CAUTION
Be sure to hold oil pump while removing mounting hardware. Once hardware Is
removed, there Is nothing to hold parts of pump together. Failure to hold pump
will allow parts to fall and may cause damage.
NOTE
Screws lengths vary. Note length and location of screws to ensure proper
Installation.
3.
Using machinist's scriber, match-mark two screws (11) and two screws (13) with oil pump assembly tube (12) and
oil pump cover (8).
4.
Remove two screws (11), two screws (13), and four lockwashers (10) from oil pump assembly tube (12), oil pump
cover (8), oil pump housing (7), and cylinder block plate (1). Discard lockwashers.
5.
Rotate oil pump cover (8) with attached oil outlet tube (9), oil pump assembly tube (12), and oil pump housing (7)
until oil outlet tube clears engine block (2), then remove.
6.
Remove oil pump assembly tube (12) and oil pump cover (8) from oil pump housing (7).
3-120
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