TM 9-2320-272-24-2
4-32. ENGINE INJECTOR TIMING INSTRUCTIONS (Contd)
c. Valve Crossheads Removal
NOTE
Tag all crossheads for installation.
1.
Loosen twelve crosshead adjusting nuts (2) on crossheads (1).
2.
Remove twelve crossheads (1) from cylinder heads (3).
d. Fuel Injectors Removal
CAUTION
Do not turn injector upside down after removal. Plunger will
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fall out and be damaged.
l Do not damage injector tip during handling. Ensure injectors
and plungers are not intermixed. Always number injectors
according to the cylinder head from which they were removed.
NOTE
Top stop and non-top stop injectors are removed the same way.
This task covers non-top stop injectors.
1.
Remove injector link (4) from injector (6).
2.
Remove two screws (8) from injector retaining clamp (5).
3.
Remove retaining clamp (5), washer (7), and injector (6) from cylinder head (3). Keep injector (6) in
safe place.
e. General Instructions
NOTE
This timing procedure is for engines mounted on test stand only.
l
The precise timing of the injector push tube travel with
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corresponding piston travel is accomplished by using the
injector timing fixture to measure travel of these two parts.
Adjustments to injection timing are made by altering the
l
thickness of cam follower gaskets.
The injection timing may be advanced or retarded by adding or
l
removing cam follower gaskets.
The timing operation is performed on only one cylinder on each
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head; cylinder No. 6 cannot be timed with engine in vehicle.
Ensure camshaft is pushed back against rear of cylinder block
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for zero end play.
4-238
