TM 10-4610-239-24
TM 08580B-24/3
Table 3-1. Direct Support Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
BOOSTER PUMP ASSEMBLY - Continued
PUMP ELECTRIC MOTOR FAILS TO START WHEN BOOSTER PUMP SWITCH IS SET TO START - Continued
Step 4.
Shut down ROWPU. Refer to TM 10-4610-239-10. Shut down power. Refer to
generator manual. Set BOOSTER PUMP switch to RUN position. Refer to
booster pump assembly support diagram figure 3-4. Check continuity
point-to-point between test points A andB through S6-2 and S6-7.
If all checks indicate continuity except across terminals 2 and 3 of K6,
repair K6. Refer to paragraph 3-49.
If there is no continuity through other sections of K6, repair K6. Refer
If there is no continuity through S6, replace S6. Refer to paragraph
If there is no continuity through a wiring harness, repair wiring harness.
Refer to paragraph 3-39.
If there is no continuity through a cable, repair cable assembly. Refer to
Step 5.
Refer to schematic diagram figure FO-3. Check for 208 V ac at K6 between
terminal pairs T1 and T2, T2 and T3, and T1 and T3.
If 208 V ac is not present on all terminal pairs, go to step 6.
If 208 V ac is present on all terminal pairs, go to step 9.
Step 6.
Refer to schematic diagram figure FO-3. Check for 208 V ac at K6 between
terminal pairs on the top screw of each heater; left to center, center to right, and
left to right.
If 208 V ac is not present on all terminals pairs, go to step 10.
If 208 V ac is present on all terminal pairs, shut down ROWPU. Refer
to TM 10-4610-239-10. Shut down power. Refer to generator manual.
Remove screws and three heaters. Replace heaters that have damaged
elements. Start ROWPU. Refer to TM 10-4610-239-10. Repeat step 5.
If 208 V ac is not present on all terminal pairs after repeating step 5, go
to step 7.
If 208 V ac is present on all terminal pairs after repeating step 5,
malfunction caused by faulty heater elements has been corrected.
3-21
