TM 9-2320-272-24-4
5-19. FUEL INJECTOR REPAIR (Contd)
b. Top Stop Injector Disassembly
WARNING
Drycleaning solvent is flammable and toxic. Do not use near open
flame and always have a fire extinguisher nearby when solvents
are used. Use only in well-ventilated places, wear protective
clothing, and dispose of cleaning rags in approved container.
Failure to do this may result in injury or death to personnel and/or
damage to equipment.
CAUTION
When handling injector, use care not to drop or lose parts.
l
l Improper cleaning methods and use of unauthorized cleaning
solvents can damage equipment.
Clean exterior of injector (6) with drycleaning solvent (para. 2-14).
1.
Install injector body wrench in vise.
2.
Slide flat machined areas of injector (6) into injector body wrench.
3.
Loosen locknut (4) with locknut wrench.
4.
Loosen adjusting screw (3) with adjusting wrench.
5.
Remove adjusting screw (3), locknut (4), plunger (2), spring retainer (1), and plunger spring (7) from
6.
injector (6).
Loosen cup retainer (5) using cup retainer wrench.
7.
Remove injector (6) and body wrench from vise.
8.
Set injector adapter (9) upright on flat surface and remove cup retainer (5) by lifting straight up.
9.
Remove injector cup (8) from injector (6). Discard injector cup (8).
10.
CAUTION
Injector barrel and plunger are a matched pair (class fit). Do not
l
interchange.
l Do not touch internal parts unless hands are clean and
moistened with diesel fuel. Failure to do so may result in
damage to internal parts.
Hold injector barrel (11) and adapter (9) together and set injector barrel (11) end upright on clean
11.
cloth. Lift adapter (9) straight up out of injector barrel (11) while holding injector barrel (11).
Lift injector barrel (11) up and tilt over hand until check ball (10) falls out. Discard check ball (10).
12.
Remove small O-ring (13) and two large O-rings (12) from injector (6). Discard O-rings (13) and (12).
13.
Remove screen retaining ring (14) and screen (15) from injector (6). Discard screen retaining ring (14)
14.
and screen (15).
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