TM 5-2420-231-23-1
0024
Table 1. Low Engine Oil Pressure Indicator Fault - Continued.
024
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. Perform Engine Oil Pressure
Engine Oil Pressure OK - Proceed to
Low Engine Oil Pressure
Check (WP 0084). Engine oil pres-
Test Step 2.
Indicator Fault - Continued
sure should be at least 17 psi (1.2
Engine Oil Pressure Low at Any RPM
bar) with engine idling, and at least
- Replace oil pump (WP 0121). Proceed
55 psi (3.8 bar) with engine at
to step 9.
2,000 rpm.
9. Perform Engine Oil Pressure
Engine Oil Pressure OK - Proceed to
Check (WP 0084). Engine oil pres-
Test Step 2.
sure should be at least 17 psi (1.2
Engine Oil Pressure Low at Any RPM
bar) with engine idling, and at least
- Replace engine (WP 0091).
55 psi (3.8 bar) with engine at
2,000 rpm.
Test Step 2. Check for Faulty Oil
Pressure Switch.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect main chassis wiring
harness connector (Figure 2,
Item 1) (WP 0007, Figure 35) from
oil pressure switch (Figure 2,
Item 2) (WP 0007, Figure 36).
Figure 2. Engine Oil Pressure Sending Unit.
0024