TB 9-2320-335-13&P
15-22. 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
automotive (Appendix B, Item 1)
(TM 9-2320-387-24-2).
Needlenose pliers (Appendix B, Item 31)
Geared fan driveshaft removed (para. 3-80.3).
Special Tools
General Safety Instructions
Socket, 3/8-in. (Appendix B, Item 144)
Compressed air used for cleaning purposes will not
exceed 30 psi (207 kPa).
Manual References
Maintenance Level
TM 9-2320-387-24-1
TM 9-2320-387-24P
Direct support
Personnel Required
One mechanic
One assistant
Removal
NOTE
Affected cylinder piston must be brought to Top Dead Center
(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 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.
Insert needlenose pliers through injector nozzle opening (1), grasp glow plug tip, break off expanded
tip, and remove piece from prechamber.
3.
Remove glow plug (TM 9-2320-387-24-1).
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).
5.
Coil one end of an 18-in. piece of tie wire the size of the injector nozzle opening (1). Place flat coil
end over preheater to combustion chamber hole.
NOTE
In some cases it may be necessary to remove cylinder head to
remove expanded glow plug tip.
6.
Using needlenose pliers with a 90 degrees bend, insert pliers through injector nozzle opening (1),
grasp glow plug tip, break off expanded tip, and remove piece from prechamber.
7.
Install new glow plug (TM 9-2320-387-24-1).
15-16
