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TM 9-2320-364-34-2
6-80
6-11. DDEC III TIMING AND SYNCHRONOUS REFERENCE SENSOR
(TRS/SRS) REPLACEMENT/ADJUSTMENT(CONT).
(4)
Turn camshaft (17) slowly counterclockwise
until large dial hand (18) starts moving.
(5)
Continue turning camshaft (17) slowly
counterclockwise until large dial hand (18)
stops moving.
(6)
Turn camshaft (17) slowly in opposite
direction until large dial hand (18) barely
starts to move. Piston is now at
top-dead-center.
NOTE
Dial indicator must be zeroed
before piston downward travel
can be measured. Perform Steps
(7) thru (9) to zero dial indicator.
(7)
Loosen thumbscrew and remove slotted
spacer.
(8)
Lower timing tool until two small dial hands
(19) are at zero and the large dial hand (18)
is near zero. Tighten thumbscrew.
(9)
Loosen bezel screw and rotate outer ring of
dial until zero lines up with large dial hand
(18). Tighten bezel screw.
If pulley loosens during procedure,
tighten to torque values specified in
Appendix D. Failure to comply may
result in loss of camshaft pulley and
possible engine damage.
(10)
Zero dial indicator and turn camshaft (17)
slowly counterclockwise, until dial
indicates exactly 2.146 in. (54.51 mm).
(See below).
ZERO POSITION
2.146 IN. POSITION
17
19
18
19
OUTER RING
BEZEL SCREW
DIAL
INDICATOR
SLOTTED
SPACER
THUMBSCREW
TIMING TOOL
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