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 11.
Shut down ROWPU. Refer to TM 10-4610-239-10. Shut down power. Refer
continuity between K5 terminals L1, L2, and L3 and J1 pins A, B, and C
respectively.
If all three measurements do not indicate continuity, go to step 17.
If all three measurements indicate continuity, repair K5. Refer to
Step 12.
Shut down ROWPU. Refer to TM 10-4610-239-10. Shut down power. Refer
to generator manual. Remove distribution pump cable assembly from motor.
Refer to paragraph 2-133. Leave cable connected to J5. Refer to schematic
diagram figure FO-3. Check continuity between motor controller K5 terminals
T1, T2, and T3 and wire lugs on end of cable.
If all three measurements do not indicate continuity, go to step 13.
If all three measurements indicate continuity, go to step 14.
Step 13.
Disconnect distribution pump cable connector P5 from ROWPU. Refer to
schematic diagram figure FO-3. Check continuity between wire lugs on end of
cable and P5-A, P5-B, P5-C, and P5-D.
If all four measurements indicate continuity, replace receptacle
connector J5. Refer to paragraph 3-37.
If all four measurements do not indicate continuity, repair distribution
pump cable assembly. Refer to paragraph 3-17.
Step 14.
Refer to schematic diagram figure FO-3. Check continuity between wirelugs
on end of cable and junction box ground terminal El.
If there is no continuity between any wire lug and. El, go to step 15.
If there is continuity between a wire lug and El, repair distribution
pump electric motor. Refer to paragraph 3-29 or 3-30.
3-28
