TM 5-3810-300-24&P-3
14.3 LIMITING SPEED GOVERNOR ADJUSTMENT
No. 2 injector. If the rack of the No. 1 injector has
become loose, back off slightly on the inner
NOTE: This lowers the tension on the
adjusting screw on the No. 2 injector rack control
low speed spring permitting the governor
lever and tighten the outer adjusting screw.
gap
to
close
completely when
performing Step 4 without overcoming
When the settings are correct, the racks of both
the control tube fuel modulating torsion
injectors must be snug on the ball end of their
spring.
respective rack control levers.
3
Loosen all of the inner (270) and outer (271)
injector rack control lever adjusting screws (Fig
8
Position the remaining injector rack control levers
3) Be sure all of the control levers are free on the
as outlined in Steps 6 and 7.
injector control tube.
4
Move the governor speed control lever (21)to the
9
Connect the fuel rod to the injector control tube
full-fuel position as shown in Fig 3 Turn the inner
lever.
adjusting screw down until a step up of effort is
noted This will place the No1 injector rack in the
10
Turn the idle speed adjusting screw until it projects
full-fuel position
Turn the outer adjusting screw
3/16" from the lock nut to permit starting the engine.
down until it bottoms lightly on the injector control
tube Then, alternately tighten both the inner and
NOTE: Remove the "C" clamp from the
outer adjusting screws.
fuel rod on units equipped with a yield
5
To be sure the control lever is properly adjusted,
link.
hold the speed control lever in the maximum speed
position and press down on the injector rack with a
Position Injector Rack Control Levers Engines Using
screw driver or finger tip and note "rotating"
Fuel Modulator
movement of the injector control rack (Fig 4) when
the speed control lever is in the maximum speed
The position of the injector racks must be correctly set in
position Hold the speed control lever in the
relation to the governor. Their position determines the
maximum speed position and, using a screw driver,
amount of fuel injected into each cylinder and ensures
press downward on the injector control rack. The
equal distribution of the load. When adjusting the fuel
rack should tilt downward (Fig 5) and when the
control racks, be sure no interference is encountered
pressure of the screw driver is released, the control
from the fuel modulator. This may be assured by
rack should "spring" back upward.
loosening the fuel modulator lever "U" bolt and moving
the modulator lever along the injector control tube to
6
Check the setting of the No 1 injector rack by
avoid contact with the modulator cam or adjacent
moving the governor speed control lever towards
cylinder head stud nut (Fig. 8).
the no-fuel position while holding the governor to
control tube link, with a light finger pressure, in a
NOTE: When the modulator lever is in
direction towards the governor This pressure will
position, it may strike the cylinder head
retain the low speed spring gap in the closed
stud nut when the rack is moved toward
position when the speed control lever is moved from
the "OFF" position. However, the no-
the fullspeed position toward the idle position. A
fuel position is reached before this
proper rack setting will be indicated by an
contact takes place and should therefore
immediate corresponding movement of the No.1
cause no concern.
injector rack from the full-fuel position when the
governor speed control lever is moved away from
Adjust the No. 1 injector rack control lever first to
the full-speed position.
establish a guide for adjusting the remaining injector rack
7
If no immediate corresponding movement of the
control levers.
injector rack is observed in step 6, back off the
inner adjusting screw approximately 1/8 of a turn
1
Disconnect any linkage attached to the governor
and tighten the outer adjusting screw When the
speed control lever.
setting is correct, the injector rack will be snug on
2
Loosen the idle speed adjusting screw lock nut (56)
the pin of the rack control lever and still maintain the
and back out the idle speed adjusting screw (55)
movement specified in Step 6.
until 1/2" of the threads project from the lock nut
when the nut is ag,inst the high speed plunger (Fig
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