User Manual

200 SETUP AND ADJUSTMENTS
Page 7-3
After verifying that there is a clutch mounting bolt/
bolt hole in line with the TC mark, the next step is
to locate the three locations where the valve
adjustment marks should be. Put a temporary
(chalk, grease pencil, paint, etc.) mark at each of
the three locations. Proceed as follows:
1. Beginning with the TC mark aligned with the
timing pointer, rotate the engine in the
direction of normal rotation
(counterclockwise, viewed from rear) to the
next clutch mounting bolt/bolt hole.
Temporarily mark this location for cylinders
1 and 6.
2. Continue rotating the engine in the normal
direction and count the clutch mounting bolt/
bolt holes as they pass the timing access
opening. At the fourth mounting bolt/bolt
hole, make a temporary mark on the
flywheel for cylinders 2 and 5.
3. Rotate the engine another four mounting
bolt/bolt holes and make a temporary mark
on the flywheel for cylinders 3 and 4.
4. Rotate the engine another three clutch
mounting bolt/bolt holes and verify that the
flywheel is at the TC mark. Then, rotate the
engine one more bolt/bolt hole and verify
that the flywheel is at the temporary mark
made for cylinders 1 and 6.
5. Permanently mark the flywheel at this
location for cylinders 1 and 6. To gain
access, rotate the engine slightly so that the
area to be marked is either to the right or left
side of the timing pointer. Place a chisel
mark directly in line with the clutch mounting
bolt/bolt hole. Then, stamp or electric-etch
the cylinder numbers on either side of the
chisel mark.
6. Rotate the engine to the remaining locations
and make sure to count the clutch mounting
bolt/bolt holes to verify the locations of the
temporary markings. Once verified,
permanently mark each location as
described.
NON-TYPICAL FLYWHEELS
If the engine is equipped with a non-typical
flywheel, the TC markings will be halfway
between two clutch mounting bolts. If this type of
flywheel has no valve adjustment markings, it
should be replaced. Also, any flywheel which has
no markings for injection pump timing should be
replaced, even though piston travel method of
injection pump timing could be used.
Valve Yoke Adjustment
On mechanically governed engines, before
barring engine for any reason, secure injection
pump stop lever in stop position.
Make sure that adjusting screws are retracted
upward in the rocker arms. If they extend too far
below the rocker arm, the push rods can be bent
when tightening the rocker arm assembly
brackets.
Refer to Figures 7-1, 7-2 and 7-3.
1. Using engine barring socket J 38587-A,
manually rotate engine in normal rotation
direction until pointer in flywheel housing
aligns with valves 1 and 6 mark on the
flywheel and the No. 1 piston is on the
compression stroke (or until the pointer
marked VALVE aligns with the TC mark on
the vibration damper, if equipped).
Figure 7-1 — Engine Crankshaft Rotation
1. Barring socket
J 38587-A
2. Flywheel housing
3. Flywheel
5-101.bk Page 3 Friday, March 17, 2006 11:05 AM