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 TM 55-1905-223-24-5
Table 2-2. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
STEP 3. Check oil temperature gauge for malfunction.
a. Check the electrical wiring between the gauge and sending unit for breaks or grounded circuit.
b. Check for loose or broken sending unit.
c. Drain engine oil, refer to LO 55-1905-223-12.
d. Remove oil temperature sending unit and substitute an oil temperature gauge of known accuracy
to verify reading of suspect gauge and/or sending unit.
e. Fill engine with oil, refer to LO 55-1905-223-12.
FIGURE 24. Oil Temperature Gauge.
f. Run engine until engine is at normal operating temperature.
g. Replace oil temperature gauge and sending unit if readings differ.
h. Drain oil (refer to LO 55-1905-223-1V and reinstall sending unit.
i. fill engine with oil, refer to LO 55-1905-223-12.
STEP 4. Check oil cooler bypass valve for malfunction. Refer to Item 7, Step 3.
9. Lubricating oil in coolant.
STEP 1. Check for malfunctioning lubricating oil cooler.
a. Remove oil cooler core (para. 3-14) and check for leakage.
b. Replace oil cooler core (para. 3-14).
Change 2
2-33
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