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TM 5-4210-220-34
2-19.
ENGINE - Continued
2-19.10
Oil Pump - Continued
(5)
Dry all components using compressed air.
(6)
Inspect all parts for wear, corrosion or
damage.
(7)
Check spring (2) for pitting or fractures.
Remove light corrosion from valve (3) using
crocus cloth (item 7, Appendix B). The
valve (3) must slide freely in the valve body
(4). Replace parts as necessary.
(8)
Replace complete valve assembly if valve
body (4) is damaged beyond repair.
(9)
Clamp the cleaned body (4) in the soft jaws
of a vise.
(10)
Apply engine oil (item 17, Appendix B) to
the outer face of the valve (3) and slide It
into the body (4), closed end first.
NOTE
It is important that the retaining pin (5) be positioned correctly so the proper valve opening pressure will be obtained.
(11)
Each valve body has two retaining pin holes. Install the retaining pin (5) in the outer most hole for the
regulator valve, and install the retaining pin (5) in the inner hole (B) for oil pump relief valve.
(12)
Insert the spring (2) in the valve (3) and install spring seat (1). While compressing the spring install the
retaining pin (5) behind the spring seat. Press the pin flush to 0.010 in. (0.25 mm) below the valve body
surface.
2-236
( 2-237 Blank)
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