TM 5-3895-374-24-2
3-6-5 Fuel Pump Drive
Removal, Repair and Replacement See figure 3-37.
This procedure assumes a complete removal, repair and replacement of the assembly. A partial disassembly repair and
replacement is possible. Follow the procedure to the point of removing only those components requiring repair or
replacement.
A.
Disassembly
1.
Disconnect and lock out the breaker for the fuel pump motor.
2.
Use sorbent fabric pad under the fuel pump to catch any fuel that escapes during the disassembly.
3.
Use a clean pail for the fuel that drains from the lines. This material may be reused.
4.
Close the valve between the fuel tank and the fuel pump. See the schematic in Section 3-6-3.
5.
Disconnect the fuel lines to the pump. Tag these lines prior to removal recording which line goes to which
port. Collect the fuel that is in the lines into a pail.
6.
Remove the coupling guard.
7.
Remove the four bolts holding the electric motor. Remove the junction box cover on the motor. Label the
electrical wires and disconnect the three power wires and the ground. Disconnect the ground strap from the
electric motor to the frame.
8.
Remove the bolts holding the fuel pump.
9.
Remove the shaft coupling according to Section 3-6-6.
B.
Inspection
1.
The fuel pump should be inspected, tested and repaired according to the manufacturer’s instructions in
Section 3-6-11.
2.
Have the electric motor inspected and tested by a qualified facility. Repair or replace as necessary.
3.
Inspect the shaft coupling and replace coupling sleeve or flanges as necessary.
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