TM 9-2320-272-24-2
4-32. ENGINE INJECTOR TIMING INSTRUCTIONS (Contd)
11.
Read right hand push tube travel indicator. If push tube travel is not 0.0290 in. (0.74 mm), continue
to step 12.
NOTE
Perform the following steps before making changes in cam follower
gaskets to correct injection timing.
12.
Ensure cam screws in cam follower housing are tightened to specifications (para. 4-20).
13.
Recheck positioning of piston and push tube indicators. Ensure indicators are not bottoming or
binding.
14.
Carefully recheck piston and push tube indicators TDC (steps 2 through 5).
15.
If required, advance injector timing by adding cam follower gaskets, or retard injector timing by
removing cam follower gaskets (para. 4-19).
16.
Remove timing fixture from engine (1).
h . Fuel Injectors Installation
CAUTION
Ensure no foreign objects have fallen into cylinder head through
injector bore.
NOTE
l If injector condition is unknown, or has been disassembled, it
must be calibrated before installation (para. 4-33).
l Top stop and non-top stop injectors are installed the same way.
This task covers non-top stop injectors,
Apply clean engine oil to lubricate three injector (3) O-rings (5).
1.
Start injector (3) into injector bore (6). Align screen on fuel inlet hole with exhaust side of cylinder
2.
head (7).
Install spring compressor on cylinder head (7) and place over injector plunger (4).
3.
Give spring compressor a quick push to seat injector (3). A click will be heard when
4.
injector (3) seats properly.
Position retaining ring (8) and clamp plate (10), with counterbore up, over injector (3) and start two
5.
screws (9). Do not tighten screws (9).
Carefully insert injector link (2) in injector (3) and tighten screws (9) incrementally in 4 lb-ft
6.
(5 Nm) steps to 11-12 lb-ft (15-16 Nm).
Raise injector link (2) 1/3 its length and allow to fall back into injector (3). If link binds or sticks,
7.
loosen screws (9) and retighten as described in step 6.
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