3
Loosen all of the inner (270) and outer (271)
injector rack control lever adjusting screws. Be
sure all of the control levers are free on the injector
control tube.
NOTE: On engines equipped with a yield
link type fuel rod, attach a small "C"
clamp at the shoulder of the rod to
prevent
the
yield
spring
from
compressing while adjusting the injector
rack control levers.
4
Move the governor speed control lever (21)to the
maximum speed position as shown in Fig.
Hold the lever in that position with light finger
pressure. Turn the inner adjusting screw on the No.
1 injector rack control lever down until a slight
Fig. 5 - Checking Injector Control Rack "Spring"
movement of the control tube is observed or a step
and note "rotating" movement of the injector control rack
up in effort is noted. This will place the No. 1
(Fig. 4) when the speed control lever is in the maximum
injector rack in the full-fuel position. Turn the outer
speed position. Hold the speed control lever in the
adjusting screw down until it bottoms lightly on the
maximum speed position and using a screw driver, press
injector control tube. Then, alternately tighten both
downward on the injector control rack. The rack should
the inner and outer adjusting screws.
tilt downward (Fig. 5) and when the pressure of the
NOTE: Overtightening of the injector
screw driver is released, the control rack should "spring"
rack control tube lever adjusting screws
back upward.
during installation or adjustment can
result in damage to the injector control
If the rack does not return to its original position, it is too
tube. The recommended torque of the
loose. To correct this condition, back off the outer
adjusting screws is 24-36 in-lbs.
adjusting screw slightly and tighten the inner adjusting
screw slightly.
NOTE: The above step should result in
placing the governor linkage and control
The setting is too tight if, when moving the speed control
tube assembly in the same position that
lever from the idle to the maximum speed position, the
they will attain while the engine is
injector rack becomes tight before the speed control
running at full load.
lever reaches the end of its travel (as determined by the
stop under the governor cover). This will result in a step
5.
To be sure the control lever is properly adjusted,
up in effort required to move the speed control lever to
hold the speed control lever in the maximum speed
the end of its travel. To correct this condition, back off
position and press down on the injector rack with a
the inner adjusting screw slightly and tighten the outer
screw driver or finger tip
adjusting screw slightly.
6
Disconnect the fuel rod from the injector control
tube and manually hold the No 1 injector in the full-
fuel position and turn down the inner adjusting
screw of the No 2 injector until the injector rack has
moved into the full-fuel position and the inner
adjusting screw is bottomed on the injector control
tube
Turn the outer adjusting screw down
until it bottoms lightly on the injector control tube
Then, alternately tighten both the inner and outer
adjusting screws.
7
Recheck the No 1 injector rack to be sure that it has
remained snug on the ball end of the injector rack
Fig. 4 - CheckingRotating Movement
control lever while adjusting the
of Injector Control Rack
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