TM 5-3825-226-24
INSTALLING BOLT
1. 1D4539 Bolt, 5/16 in.-18NC, 2.5 in. (63.5 mm) long.
2. Timing hole. 3. Hole.
4. The intake and exhaust valves for No. I cylinder
must now be closed and the timing pointer will be in
alignment with the TDC-1 on the damper assembly.
The No. I piston is now at top center on the
compression stroke.
FUEL SYSTEM ADJUSTMENTS
Checking Fuel Injection Pump
Timing; On Engine
The timing of the fuel injection pump can be checked
and changed if necessary, to make compensation for
movement in the taper sleeve drive or worn timing
gears. The timing can be checked and if necessary,
changed using the following method.
Checking Timing by Timing Pin Method
Tools Needed:
5P2371 Puller.
3P1544 Timing Pin,
1. Remove bolt (1) from the timing pin hole.
TIMING HOLE BOLT
1. Bolt.
2. Turn the crankshaft COUNTERCLOCKWISE (as
seen from rear of engine) until timing pin (2) goes into
the notch in the camshaft for the fuel injection pumps.
3. Remove the plug from timing hole (4) in the front
cover. Put bolt (3) through the front cover and into the
hole with threads in the timing gear. The bolt from hole
(5) can be used.
TIMING PIN INSTALLED
(Typical Example)
2. 3P1544 Timing Pin.
INSTALLING BOLT
3.1D4539 Bolt, 5/16 in.-18 NC, 2.5 In. (63.5 mm) long.
4. Timing hole. 5. Hole.
4. If the timing pin is in the notch in the camshaft for the
fuel injection pumps, and bolt (3) goes into the hole in
the timing gear through timing hole (4), the timing of the
fuel injection pump is correct.
NOTE
If bolt (3) does not go in the hole in
the timing gear with timing pin (2) in
the notch in the camshaft, use the
following procedure.
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