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 98 of 1258
TM 9-2320-280-34
3 - 18.
GLOW PLUG TIP REMOVAL (DAMAGED OR BROKEN)
This task covers:
Removal
INITIAL SETUP:
Tools
Equipment Condition
General mechanic's tool kit:
•
Fuel injector nozzle removed (para.
4-3).
automotive (Appendix G, Item 1)
•
Drivebelts loosened (TM 9-2320-280-20).
Needlenose pliers, 90 ° (Appendix G, Item 134)
General Safety Instructions
Special Tools
Compressed air used for cleaning purposes will not
Socket 3/8 in.
(Appendix G, Item 114)
exceed 30 psi (207 kPa).
Manual References
Maintenance Level
TM 9-2320-280-20
Direct support
Personnel Required
One mechanic
One assistant
Removal
NOTE
Affected cylinder piston must be brought to (TDC) position to
ensure intake and exhaust valves are closed.
1.
Using socket wrench and breaker bar on torsion damper bolt (3), rotate crankshaft to bring piston
(in affected cylinder) to top dead center (TDC) position.
NOTE
Perform steps 2 and 3 if failed glow plug is still installed in cylinder
head.
Perform step 4 if failed glow plug has been removed from the
cylinder head and glow plug tip is broken off in cylinder head
prechamber.
Perform steps 5 and 6 if failed glow plug tip is swollen.
2.
Inserting pliers through injector nozzel opening (1), grasp glow plug tip, break off expanded tip, and
remove the piece from the prechamber.
3.
Remove the glow plug (TM 9-2320-280-20).
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi
(207 kPa).
Use only with effective chip guarding and personnel
protective equipment (goggles, shield, gloves, etc.).
4.
Direct compressed air into glow plug port (2) to expel broken tip from prechamber through injector
nozzle opening (1).
3-38
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