ARMY TM 9-2815-259-24
AIR FORCE TO 38G1-125-2
MARINE CORPS 09249A/09246A-24
4.6.2. FUEL INJECTION NOZZLE ASSEMBLY.
The following procedures require complete access to the engine. If
necessary, remove engine from generator set, refer to TM 9-6115-671-14.
Mount engine on repair stand (NSN 4910-01-016-1835 or equal) as outlined
in paragraph 4.10.
Compressed air used for cleaning can create airborne particles that may
enter the eyes. Pressure will not exceed 30 psi (207 kPa). Eye protection
Before removal, carefully remove all dirt from cylinder head around fuel
injection nozzles. Clean with compressed air to prevent dirt from entering
cylinders or valve seats. Plug bore in cylinder head after each fuel injection
nozzle has been removed. Cap fuel line openings as soon as they are
Immediately fit protective caps over nozzle tips and line connections to
avoid handling damage.
(1) If removing only one fuel injection nozzle, loosen coupling nuts (2, Figure 3-17) and remove
leak off line on each side of fuel injection nozzle.
Fuel lines are fragile and can become twisted and damaged during
maintenance. Always use one wrench to hold one fitting stationary while
the other fitting is loosened or tightened. Failure to comply can cause
damage to equipment.
(2) If removing all fuel injection nozzles, remove fuel leak-off line assembly, refer to paragraph
(3) Loosen coupling nut (2, Figure 3-17) and remove leak-off T-fitting (2, Figure 4-44) from each
fuel injection nozzle (6) to be removed. Remove and discard washer (3).
(4) Disconnect fuel injection line from nozzle. Cap openings.
(5) Remove capscrew (5).