TM 5-3895-370-14&P
b.
Cleaning/Inspection.
(1)
Clean carbon out of cylinder head bores and from injector nozzle using brass wire brush.
WARNING
·
Drycleaning solvent (P-D-680) is TOXIC and flammable. Wear protective
goggles and gloves; use only in a well-ventilated area; avoid contact with skin,
eyes, and clothes and do not breathe vapors. Keep away from heat or flame.
Never smoke when using solvent; the flash point for type I drycleaning solvent
is 100°F (38°C) and for type II is 140°F (60°C). Failure to do so may result in
injury or death to personnel. P-D-680 type III is a substitute for types I and II in
this application. The flash point for type III is 200°F (93°C).
·
If personnel become dizzy while using cleaning solvent, immediately get fresh
air and medical help. If solvent contacts skin or clothes, flush with cold water.
If solvent contacts eyes, immediately flush eyes with water and get immediate
medical attention.
·
Compressed air used for cleaning purposes will not exceed 30 psi. Use only
with
effective
chip
guarding
and
personal
protective
equipment
(goggles/shield, gloves, etc.).
(2)
Clean injector nozzle holder with compressed air. New injector nozzle holders must be flushed with drycleaning
solvent to remove protective coating.
(3)
Clean spray holes on end of injector valve. Rinse in drycleaning solvent and then in calibration fluid.
(4)
Check opening pressure as follows:
(a)
Install fuel injector to injector gage pump securely.
(b)
Open valve and operate lever at one stroke per second.
(c)
Read pressure when spray begins. Normal opening pressure is 3160 to 3307 psi (21778-22791 kPa).
(5)
Check spray pattern. Pattern must be straight and steady stream.
(6)
Check leakage as follows:
(a)
Open valve and operate lever.
(b)
Hold pressure 290 psi (1999 kPa).
(c)
No drops must fall within ten seconds.
(7)
Replace fuel injectors failing inspection.
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