Engine Tune-Up
the injector rack. Then exert a light pressure on the
Adjustment
injector control tube in the direction of full fuel.
Whenever the injector rack control levers are adjusted,
disconnect the throttle delay mechanism by loosening
2. Align the throttle delay piston so it is flush with the
the U-bolt which clamps the lever to the injector
edge of the throttle delay cylinder.
control tube. After the injector rack control levers have
been positioned, the throttle delay mechanism must be
3. Tighten the U-bolt on the injector control tube and
re-adjusted. With the engine stopped. proceed as
remove the gage.
follows:
4. Move the injector rack from the no-fuel to the full-
1. Refer to Fig. 4 and insert gage J 23190 (.454" set-
fuel position to make sure it does not bind.
ting) between the injector body and the shoulder on
ADJUSTMENT OF MECHANICAL GOVERNOR SHUTDOWN SOLENOID
2. With the stop lever in the run position. adjust the
When a governor shutdown solenoid is used on an
rod end eye or right angle clip for minimum
engine equipped with a mechanical governor. the
engagement on t h e s o l e n o i d p l u n g e r w h e n t h e
governor stop lever must be properly adjusted to
connecting halt is installed. The oversize hole in the
match the shutdown solenoid plunger travel.
eye or clip will thereby permit the solenoid to start
closing the air gap. with a resultant build up of pull
The solenoid plunger can be properly aligned to the
in force prior to initiating stop lever movement.
governor stop lever as follows:
3. The bolt through the rod end eye of the right angle
clip should be locked to the stop lever and adjusted to
1 . Remove the bolt connecting the rod end eye
a height that will permit the eye or clip to float
(variable speed governor) or the right angle clip
vertically. The clearance above and below the eye or
(limiting speed governor) to the stop lever (Figs. 5
c l i p and the bolt head should be approximately
and 6). Align and clamp the lever to the shutdown
1/32" minimum.
shaft in such a way that, at its mid travel position, it is
perpendicular to `the solenoid plunger. This assures
NOTE: The lock nut can he either on top of or
that the linkage will travel as straight as possible. The
below the stop lever.
solenoid plunger has available 1/2" travel which is
more than adequate to move the injector control racks
4 Move the lever to the stop position and observe the
from the full-fuel to the complete no fuel position
plunger for any possible bind If necessary, loosen the
and shutdown will occur prior to attaining complete
mounting bolts and realign the solenoid to provide
travel.
free plunger motion
Fig. 6 - Typical Limiting Speed Governor Lever
Fig. 5 - Typical Variable Speed Governor Lever
Position
Position
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