TM-9-2320-272-24-4

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4

JUNE 1998

TM-9-2320-272-24-4 - Page 252 of 836

TM 9-2320-272-24-4

5-36. FUEL INJECTION PUMP MAINTENANCE (Contd)

c. Barrel and Control Rack Removal

1.

Position fuel pump housing (5) top side up in vise.

2.

Loosen six delivery valve holders (1) from barrels (9).

3.

Remove twelve barrel flange nuts (2), lockwashers (3), and spacer rings (4) from fuel pump

housing (5). Discard lockwashers (3).

4.

Remove six barrels (9) from fuel pump housing (5).

5.

Remove six O-rings (8) from barrels (9). Discard O-rings (8).

6.

Remove six retainers (6) and capsules (7) from barrels (9). Discard retainers (6).

7.

Remove six delivery valve holders (1), washers (12), springs (11), and delivery valves (10) from

barrels (9).

8.

Remove six O-rings (13) from delivery valve holders (1). Discard O-rings (13).

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