TM 5-3895-370-14&P
Table 4-4. Unit Troubleshooting Procedures - CONT.
Malfunction
Test or inspection
Corrective action
ELECTRICAL SYSTEM (CONT)
Step 12. Check continuity across wire between rate indicator and switch.
If there is no continuity, repair or replace wire.
If there is continuity, go to step 13.
Step 13. Check resistance across rate indicator resistor.
If 10K ±2K ohms is not measured, replace resistor (para 4-149).
If 10K ±2K ohms is measured, go to step 14.
Step 14. Check voltage on rate indicator battery.
If 3 vdc is not measured, replace battery (para 4-149).
If 3 vdc is measured, fault not corrected. Notify supervisor.
27.
FUEL GAGE DOES NOT OPERATE.
Step 1. Check voltage on voltage reducer at fuel gage terminal.
If 24 ±3 vdc is not measured, replace voltage reducer (para 4-73).
If 24 ±3 vdc is measured, go to step 2.
Step 2. Check voltage on voltage reducer wire at fuel gage.
If 24 ±3 vdc is not measured, replace or repair wire (para 4-68 and 4-73).
If 24 +3 vdc is measured, go to step 3.
Step 3. Check voltage on sensor lead at fuel gage.
If 24 ±3 vdc is not measured, replace fuel gage (para 4-69).
If 24 +3 vdc is measured, go to step 4.
Step 4. Check voltage on sensor lead at fuel tank.
If 24 ±3 vdc is not measured, repair or replace fuel sensor lead (para 4-40 and 4-68).
If 24 +3 vdc is measured, replace fuel sensor (para 4-40).
4-35
