TM 9-2815-225-34&P
3-52.
FUEL INJECTOR REPAIR
THIS TASK COVERS:
a. Disassembly
c. Inspection
b. Cleaning
d. Assembly
INITIAL SETUP:
APPLICABLE MODELS
PERSONNEL REQUIRED
All
Fuel and electrical systems repairman MOS 63G
SPECIAL TOOLS
REFERENCES (TM)
Injector stand (15434) ST-1298
None
Injector cup wrench (15434) ST-995
Crowfoot wrench (15434) ST-1072
TROUBLESHOOTING REFERENCES
Para. 2-8
TEST EQUIPMENT
None
EQUIPMENT CONDITION
Injector assembly removed (para. 3-23).
MATERIALS/PARTS
Mineral spirits (Appendix C, Item 17)
SPECIAL ENVIRONMENTAL CONDITIONS
Solvent, SD-3 (Appendix C, Item 4)
Work area clean and away from blowing dirt and
Diesel fuel, regular (Appendix C, Item 19)
dust.
Lapping compound, 280-grit (Appendix C, Item 8)
Compound, Prussian blue (Appendix C, Item 9)
GENERAL SAFETY INSTRUCTIONS
Oil, lubricating, OE/HDO 10
Diesel fuel is flammable.
(Appendix C, Item 20)
Always wear eye protection when cleaning with
Gasket (15434) 173086
compressed air.
Three gaskets (15434) 193736
Use approved solvent in well-ventilated area.
LOCATION/ITEM
ACTION
REMARKS
a. Disassembly
NOTE
Injector barrels and plungers are not interchangeable.
Use this procedure to repair any of the six fuel injector assemblies.
1.
Plunger (2)
Lift out.
Store plunger (2) by standing it on
coupling end.
2.
Top-stop locknut (4) and
Remove.
top-stop screw (3)
3.
Washer(5) and injector
Lift out.
spring (6)
4.
Three gaskets (8)
Remove.
Discard gaskets (8).
5.
Filter screen clip (14), filter
Remove from top-stop adapter (7).
Discard gasket (16). Discard filter
screen (15), and gasket (16)
screen (15) only if damaged.
NOTE
Do not remove or turn adjustable orifice plug located behind filter screen. The orifice plug
has been pre-set. Fuel delivery is adjusted by changing orifice plug or by burnishing plug in
its operating position.
6.
Top-stop adapter (7) and
Loosen.
Secure injector assembly (1) into
cup retainer (11)
injector stand (ST-1298). Using
body and injector cup wrench
(ST-995), loosen retainer (11) but
do not remove. When loose,
remove injector from stand.
3-340
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