TM 5-3805-290-23-1
ENGINE TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0010 00
ENGINE OIL PRESSURE TEST - CONTINUED
Low Oil Pressure - Continued
5.
Check inlet screen on oil pickup tube and remove any material that may be restricting engine oil flow.
6.
Check joints of oil pickup tube for cracks or damaged O-ring seal. Replace inlet screen and oil pickup tube if necessary
(WP 0160 00).
7.
Replace oil pump if necessary (WP 0160 00).
8.
Replace engine (WP 0145 00).
N OT E
High oil pressure can be caused by debris in engine oil system causing restriction of oil flow and/or
restricted movement of engine oil bypass valves.
High Oil Pressure
1.
If engine oil bypass valves are stuck in closed position, remove and clean each bypass valve to correct this problem (WP
0158 00). Replace engine oil bypass valve, if necessary.
2.
Change engine oil and install new engine oil filters (WP 0025 00).
FINDING TOP-CENTER POSITION FOR NO. 1 PISTON
0010 00
1.
Fasten temporary pointer (1) (a piece of tape) to front
of front cover. Position tip of pointer close to edge of
damper (2) on crankshaft or close to edge of pulley.
427-B0650