TM 5-3810-300-24&P-3
14.14 GOVERNING DEVICE ADJUSTMENT
The throttle delay mechanism is used to retard full fuel
movement of the iniector racks while the piston expels
injection when the engine is accelerated. This reduces
the oil from the cylinder through an orifice. To permit full
exhaust smoke and also helps to improve fuel economy.
accelerator travel, regardless of the retarded injector
rack position, a spring loaded yield lever and spring
The throttle delay mechanism (Fig. 3) is installed
assembly replaces the standard lever on the front end of
between the No. I and No. 2 cylinders on the cylinder
the injector control tube.
head. It consists of a special rocker arm shaft bracket
(which incorporates the throttle delay cylinder), a piston,
Adjustment
throttle delay lever, connecting link, orifice plug, ball
check valve and U-bolt.
Whenever the injector rack control levers are adjusted,
disconnect the throttle delay mechanism by loosening
A yield lever and spring assembly replaces the standard
the U-bolt which clamps the lever to the injector control
lever and pin assembly on the front end of the injector
tube. After the injector rack control levers have been
control tube.
positioned, the throttle delay mechanism must be re-
adjusted. With the engine stopped, proceed as follows:
Operation
1
Refer to Fig 4 and insert gage J 23190 (.454"
Oil is supplied to a reservoir above the throttle delay
setting) between the injector body and the shoulder
cylinder through an orifice plug in the drilled oil passage
on the injector rack. Then exert a light pressure on
in the rocker arm shaft bracket (Fig. 3). As the injector
the injector control tube in the direction of full fuel.
racks are moved toward the no-fuel position, free
movement of the throttle delay piston is assured by air
2
Align the throttle delay piston so it is flush with the
drawn into the cylinder through the ball check valve.
edge of the throttle delay cylinder.
Further movement of the piston uncovers an opening
which permits oil from the reservoir to enter the cylinder
3
Tighten the U-bolt on the injector control tube and
and displace the air. When the Pnoine is accelerated
Fig. 3. Throttle Delay Cylinder and Yield Link.
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