TM 10-4610-239-24
TM 08580B-24/3
Table 3-1. Direct Support Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
DISTRIBUTION PUMP ASSEMBLY - Continued
PUMP ELECTRIC MOTOR FAILS TO START WHEN DISTRIBUTION 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. Refer to distribution pump assembly support diagram figure 3-5.
Set DISTRIBUTION PUMP switch to RUN position. Check continuity
point-to-point between test points A and B through S5-2 and S5-1.
If all checks indicate continuity except across terminals 2 and 3 of K5,
repair K5. Refer to paragraph 3-49.
If there is no continuity through other sections of K5, repair K5. Refer
If there is no continuity through S5, replace S5. Refer to paragraph 3-34.
If there is no continuity through a wiring harnes , repair wiring harness.
s
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 K5 between
terminal pairs T1 and 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 12.
Step 6.
Refer to schematic diagram figure FO-3. Check for 208 V ac at K5 between
terminal pairs on the top screw of heater; left to center, center to right, and left to
right.
If 208 V ac is not present on all terminal pairs, go to step 11.
If 208 V ac is present on all terminal pairs, shut clown ROWPU. Refer
to TM 10-4610-239-10. Shut down power. Refer to generator manual.
Remove six 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, the
malfunction caused by faulty heater elements has been corrected.
3-26
