0009
TM 1-1740-221-13&P&P
ENGINE ELECTRICAL TROUBLESHOOTING - (CONTINUED)
BRANCH 1.
1.
With engine running check for 12 volts at wire 28 at the hour meter (WP 0120).
CONDITION/INDICATION
Is 12 volts present?
DECISION
YES Replace hour meter G1 (WP 0120).
NO Proceed to Step 2.
BRANCH 2.
2.
Inspect hour meter pressure switch.
CONDITION/INDICATION
Is hour meter pressure switch defective?
DECISION
YES Replace hour meter pressure switch.
NO Proceed to Step 3.
BRANCH 3.
3.
Inspect circuit wiring (FO-1).
CONDITION/INDICATION
Is wiring faulty?
DECISION
YES Proceed to Step 4
NO No further action required.
MALFUNCTION - BRANCH 4.
MALFUNCTION - Wiring is faulty.
ACTION
4. Repair faulty circuit wiring (FO-1).
END OF TEST
TROUBLESHOOTING PROCEDURE
LOW OIL PRESSURE LIGHT REMAINS ON WITH ENGINE RUNNING
00093