TM-9-2330-330-14-P

SEMITRAILER, FUEL TANKER: 5000-GALLON, FUEL-DISPENSING, AUTOMOTIVE, M969A3

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

NOVEMBER 2005

TM-9-2330-330-14-P - Page 151 of 1116

TM 9-2330-330-14&P

0024 00-1/2 blank

CENTRIFUGAL PUMP TROUBLESHOOTING

0024 00

THIS WP COVERS:

Centrifugal Pump Troubleshooting

INITIAL SETUP:

Maintenance Level

Tools and Special Tools

Organizational

Tool kit, general mechanic’s (item 4, WP 0171 00)

References

WP 0007 00

WP 0041 00

To troubleshoot the M969A3 centrifugal pump, perform the test/inspections and corrective actions

provided in Table 1.

Table 1. Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

PUMP FAILS TO DELIVER

FUEL

1.

Check pump strainer for

debris or dirt clogging inlet.

Clean strainer (refer to WP 0041

00). Verify problem is solved. If

screen is not clogged, go to

step 2.

2.

Check to see if pump is

primed.

3.

Verify all required valves

are open per fueling

operations schematic on

tool box lid (refer to WP

0007 00).

4.

Check pump tubing and

connections for air

leakage.

If pump is not primed, manually

prime pump per WP 0041 00. If

pump is already primed, go to

step 3.

Set valves per schematic on tool

box lid (refer to WP 0007 00). If

valves are already set per

schematic, go to step 4.

If air is leaking into pump tubing

and connections, tighten all

connections. Verify problem is

solved. If gaskets need

replacement, notify Direct

Support maintenance.

END OF TASK