Engine Tune-Up
4. Move the governor stop lever to the "run" position
and hold it in that position with light finger pressure.
Turn the inner adjusting screw of the No. 1L injector
rack control lever down until a slight movement in the
governor stop lever is noted. Turn down the outer
adjusting screw until it bottoms lightly on the injector
control tube. Then alternately tighten both the inner
and outer adjusting screws (Fig. 2).
NOTE: Overtightening of the injector rack
control lever adjusting screws during installa-
tion or adjustment can result in damage to the
injector control tube. The recommended torque
of the adjusting screws is 24 36 in-lbs (3-4
Nm).
IMPORTANT: The above step should result in
placing the governor linkage and control tube
assembly in the same position that they will
attain while the engine is running at full-load.
5. To be sure of the proper rack adjustment. hold the
stop lever in the run position and press down on the
Fig. 2 - Positioning No. 1 Injector Rack
injector rack with a screw driver or finger tip and note
Control Lever
"rotating" movement of the injector control rack
(Fig. 3) when the stop lever is in the run position.
No. 1L injector rack control lever first to establish a
Hold the stop lever in the run position and, using a
guide for adjusting the remaining control levers.
screw driver. press downward on the injector control
rack. The rack should tilt downward (Fig. 4) and when
1. Remove the clevis pin from the fuel rod and the
the pressure of the screw driver is released. the control
right cylinder hank injector control tube lever.
rack should "spring" back upward.
2. Loosen all of the inner and outer injector rack
If the rack does not return to its original position, it is
control lever adjusting screws on both injector control
too loose To correct this condition. hack off the outer
tube. Be sure all of the injector rack control levers are
adjusting screw slightly and tighten the inner adjusting
free on the injector control tubes.
Screw slightly.
The setting is too tight if, when moving the stop lever
3. Move the speed control lever to the maximum speed
from the stop to the run position. the injector rack
position.
becomes tight before the stop lever reaches the end of
its travel. This will result in a step-up in effort
required to move the stop lever to the end of its travel.
To correct this condition. back off the inner adjusting
screw slightly and tighten the outer adjusting screw
slightly.
N O T E : Overtightening of the injector rack
control lever adjusting screws during installa-
tion or adjustment can result in damage to the
injector control tube. The recommended torque
of the adjusting screws is 24-36 in-lbs (3-4
Nm).
6. Remove the clevis pin from the fuel rod and the left
hank injector control tube lever.
7. Insert the clevis pin in the fuel rod and the right
cylinder hank injector control tube lever and position
Fig. 3 - Checking Rotating Movement of
t h e 1R injector rack control lever as previously
Injector Control Rack
outlined in Step 4.
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