TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 273 of 1258
4 - 6 . FUEL INJECTION PUMP MAINTENANCE
This task covers:
a.
Removal
c.
Installation
b.
Repair
TM 9-2320-280-34
4 - 8
Change 1
NOT E
• In some cases, flanged head fasteners may be present instead of
standard fasteners and washers. In all cases, washers should be used
when replacing a flanged head fastener with a standard fastener.
• Prior to removal, tag leads for installation.
• Have drainage container available to catch fuel.
1.
Disconnect leads 54A (3) and 569B (4) at fuel injection pump (7).
1.1. Remove tiedown strap (3.1) from leads 54A (3) and 569B (4).
Discard tiedown strap (3.1).
2.
Loosen clamp (2) and disconnect fuel drain back hose (1) from fuel injection pump (7).
3.
Loosen clamp (9) and disconnect outlet hose (10) from hose adapter (8).
4.
Remove return spring (5) from throttle shaft lever (6).
5.
Pull off cable clip (12) from modulator link pin (13).
6.
Slide modulator link (11) forward and disconnect from fuel injection pump (7).
7.
Remove hose adapter (8) from fuel injection pump (7).
WARNING
• Diesel fuel is highly flammable. Do not perform this procedure
near fire, flames, or sparks. Severe injury or death will result.
• Gaskets installed on some 6.2L engines assembled prior to 1991
may contain asbestos. Gaskets should be removed with a
scraper or putty knife then disposed of IAW current directives.
Inhalation of asbestos fibers can cause respiratory ailments
CAUTION
Cover or plug all hoses, connections, and openings immediately
after disconnection or component removal to prevent
contamination. Remove all plugs prior to connection.
NOTE
The fuel injection pump replacement procedures for 6.2L and 6.5L
engine models prior to, and later than 1990 are basically the same. Refer
to engine decal model number on left rocker arm cover before ordering
replacement parts, since replacement parts are not interchangeable.
INITIAL SETUP:
To o l s
____
General mechanic's tool kit:
automotive (Appendix G, Item 1)
M a t e r i a l s / P a rt s
_____________
Gasket (Appendix E, Item 15)
Tiedown strap (Appendix E, Item 210.1)
Manual Refere n c e s
________________
TM 9-2320-280-10
TM 9-2320-280-20
TM 9-2815-237-34P
TM 9-2815-237-34
Equipment Condition
_________________
• Engine oil filler tube removed (TM 9 - 2 3 2 0 - 2 8 0 - 2 0 )
.
• Kick-down switch removed (TM 9-2320-280-20).
• Fuel injection lines removed (para. 4-4).
• Accelerator cable mounting bracket removed
(para. 4-10).
• Remove TP sensor (TM 9-2320-280-20).
General Safety Instructions
______________________
• Do not perform this procedure near fire, flames,
or sparks.
• Gaskets installed on some 6.2L engines assembled
prior to 1991 may contain asbestos.
Gaskets
should be disposed of IAW current directives.
Maintenance Level
_______________
Direct support
a. Removal
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