Engine Tune-Up
18. Replace the two bolts in the levers and tighten the
bolts.
19. Remove the governor cover.
20. With the load limit screw backed all the way out,
retain the governor operating lever in the full-fuel
position. The governor terminal lever should touch the
boss in the governor housing (Fig. 7). Adjust the
vertical link so that all of the injector racks are in the
full-fuel position, then tighten the rod end lock nuts
securely.
21. Use a new gasket and install a valve rocker cover
on each cylinder head.
Adjust load limit
The load limit is set at the factory and further
adjustment should be unnecessary. However, if the
governor has had major repairs or the injector rack
control levers have been re-positioned, the load limit
screw should be re-adjusted.
With the injector rack control levers properly adjusted,
set the load limit as follows:
Fig. 6 - Adjusting Vertical Link
1. With the governor cover off and the load limit screw
lock nut loosened, adjust the screw to obtain a distance
"`surge" for about one-half minute to bleed any air
of approximately 2 " from the outside face of the boss
which may be trapped in the governor oil passages.
on the governor sub-cap to the end of the screw. Then
place and retain the governor operating lever in the
full-fuel position as shown in Fig. 7.
2. Gradually close the valve until the "hunting" just
stops. Check the amount of valve opening by closing
CAUTION: Do not overstress the linkage.
the valve completely and noting the number of turns
2. Turn the load limit adjusting screw until a
.020" space exists between the fuel rod collar and the
terminal lever. If the adjustment cannot be made with
a feeler gage, turn the load limit adjusting screw (with
the lock nut tight enough to eliminate slack in the
threads) inward until the injector racks just loosen on
the ball end of the control levers.
3. Release the governor operating lever and hold the
adjusting screw while tightening the lock nut. Then
install the governor cover and tighten the screws.
Compensation Noodle Valve Adjustment (PSG
Governor)
Start the engine and, after the engine reaches normal
operating temperature, adjust the governor compensa-
tion needle valve (without load on the engine) as
follows:
1. Open the compensation needle valve (Fig. 11) two
Fig. 7 - Adjusting Load Limit Screw
or three turns and allow the engine to "hunt" or
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