c. Pull the cover assembly in a direction away
2. Move the speed control lever to the maximum speed
from the engine, to take up the slack, and
tighten the cover screws.
3. Move the stop lever to the run position and hold it in
NOTE: This step is required since no dowels
that position with light linger pressure. Turn the inner
are used to locate the cover on the housing.
adjusting screw of the rear injector rack control lever
down until a slight movement of the control tube is
Position Injector Rack Control Levers
observed or a step-up in effort to turn the
screwdriver is noted. This will place the rear injector
rack in the full-fuel position. Turn the outer adjusting
The position of the injector control rack levers must be
screw down until it bottoms lightly on the injector control
correctly set in relation to the governor. Their position
tube. Then alternately tighten both the inner and outer
determines the amount of fuel injected into each
adjusting screws. This should result in placing the
cylinder and ensures equal distribution of the load.
governor linkage and control tube in the respective
positions that they will attain while the engine is running
Certain engines use spring-loaded injector control tube
at full load.
assemblies which have a yield spring at each injector
rack control lever and only one screw and lock nut to
NOTE: Over tightening of the injector rack
keep each injector rack properly positioned. Adjust the
control lever adjusting screws during
single screw and lock nut on each injector rack control
installation or adjustment can result in
lever the same as for the two screw rack control lever.
damage to the injector control tube. The
recommended torque of the adjusting
Properly positioned injector control rack levers with the
screws is 24-36 lb-in(3-4 Nm).
engine at full-load will result in the following:
1. Speed control lever at the maximum speed position.
4. To be sure of proper rack adjustment, hold the stop
lever in the run position and press down on the injector
2. Stop lever in the run position.
rack with a screwdriver or finger tip and note "rotating"
movement of the injector control rack (Fig. 3). Hold the
3. Injector fuel control racks in the full-fuel position.
stop lever in the run position and, using a screwdriver,
press downward on the injector control rack. The rack
Adjust the rear injector rack control lever first to
should tilt downward (Fig. 4) and, when the pressure of
establish a guide for adjusting the remaining levers.
the screwdriver is released, the control rack should
"spring" back upward.
1. Loosen all of the inner and outer injector rack control
lever adjusting screws (Fig. 2). Be sure all of the levers
If the rack does not return to its original position, it is too
are free on the injector control tube.
loose. To correct this condition, back off the outer
adjusting screw slightly and tighten the inner adjusting
screw. The setting is too tight if, when moving the stop
lever from the stop to the run position, the injector
Fig. 3 - Checking Rotating Movement of Injector Control
Fig. 4 - Checking Injector Control Rack "Spring"