TM-9-2320-280-34

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1996
TM-9-2320-280-34

  TM-9-2320-280-34 - Page 279 of 1258

TM 9-2320-280-34
4-7.
FUEL INJECTION PUMP COVER REPLACEMENT
This task covers:
a.
Removal
b.
Installation
INITIAL SETUP:
Tools
Equipment Condition
General mechanic's tool kit:
•
Hood raised and secured (TM 9-2320-280-10).
automotive (Appendix G, Item 1)
•
Battery ground cable disconnected
Retaining tool (Appendix G, Item 26)
(TM 9-2320-280-20).
Materials/Parts
General Safety Instructions
Gasket (Appendix E, Item 25)
Do not perform this procedure near fire, flames, or
O-ring (Appendix E, Item 99)
sparks
Three lockwashers (Appendix E, Item 68)
Manual References
Maintenance Level
TM 9-2320-280-10
Direct support
TM 9-2320-280-20
TM 9-2815-237-34P
WARNING
Diesel fuel is highly flammable. Do not perform this procedure
near fire, flames, or sparks. Severe injury or death will result.
CAUTION
Cover or plug all hoses, connections, and openings immediately
after disconnection or component removal to prevent
contamination. Remove all plugs prior to connection.
a.
Removal
NOTE
Prior to removal, tag leads for installation.
1.
Loosen clamp (2) and disconnect fuel drain back hose (1) from fuel injection pump (6).
2.
Disconnect leads 54A (3) and 569B (5) at fuel injection pump (6).
CAUTION
Fuel pump body must be thoroughly cleaned before disconnecting any
attaching components to prevent foreign particles from entering pump.
NOTE
Working area should be clean, well ventilated, and free from
blowing dirt and dust.
3.
Clean exterior of fuel injection pump (6) in accordance with para. 2-13.
4.
Remove three screws (9), lockwashers (10), four washers (11), and ground strap (12) from fuel
injection pump cover (4). Discard lockwashers (10).
5.
Remove cover (4) and gasket (13) from fuel injection pump housing (14). Discard gasket (13).
NOTE
Perform step 6 only if fuel injection pump cover is being replaced.
6.
Remove fuel return line check valve (7) and O-ring (8) from cover (4). Discard O-ring (8).
7.
Inspect fuel return line check valve (7) for damage. Replace if damaged.
b.
Installation
NOTE
Perform step 1 only if check valve was removed.
1.
Install O-ring (8) and fuel return line check valve (7) in cover (4).
4-14


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