TM 9-2320-365-34-2
4-5. FUEL TIMING CHECKS (CONT)
(h) Loosen collet sleeve and move dial indicator in
collet until pointer indicates correct offset, minus
scale (red numbers).
(i)
Tighten collet sleeve and check reading on red
scale.
(j)
Wipe clean the top of all fuel injector tappets and
shoulder surfaces.
CAUTION
After timing fixture has been installed, DO
NOT rotate engine. Failure to comply may
result in damage to equipment.
(k) Remove bolt from timing fixture.
NOTE
Intake and exhaust valves for No. 1 cylinder are fully closed if No. 1 piston is on COMPRESSION
STROKE and rocker arms can be moved by hand. If rocker arms can not be moved and valves are
slightly open, No. 1 piston is on EXHAUST STROKE. Refer to Table 4-1 Crankshaft Position to
determine which injectors are to be checked/adjusted for stroke position of crankshaft when timing bolt
has been installed in flywheel.
Table 4-1. Crankshaft Position
CRANKSHAFT POSITIONS FOR FUEL TIMING SETTING
SAE Standard (Counterclockwise) Rotation Engines As Viewed
From The Flywheel End
Check/Adjust With No. 1 Piston
on TC Compression Stroke
Injectors 3-5-6
Check/Adjust With No. 1 Piston
On TC Exhaust Stroke
Injectors 1-2-4
4-20
