TM 53810-300-24&P-3
2.7.1.4
Limiting Speed Governor (Fast Idle)
of the air cylinder as an assembly. Then remove
c.
Lubricate the seal ring on the piston with engine oil.
the air cylinder spring from the cylinder.
Then insert the piston and spring assembly, with the
small diameter end of the piston first, straight into
f.
Remove the seal ring from the groove in the piston.
the air cylinder spring seats on the shoulder in the
Apply pressure on the spring follower and remove
cylinder.
the follower retaining ring from the groove in the
piston. Remove the follower and spring.
d.
Install a new seal ring in the groove of the air
cylinder air inlet plug.
Inspection
e.
Lubricate the seal ring with engine oil. Then insert
Wash all of the governor components in clean fuel oil
the air inlet plug straight into the air cylinder and
and dry them with compressed air. Then inspect them
against the piston.
f.
Clamp the air cylinder in a vise equipped with soft
Examine the fast idle air cylinder components for wear or
jaws. Apply pressure on the end of the air inlet plug
any defects. Replace worn or damaged parts.
and compress the spring enough to expose the
retaining ring groove. Then install the retaining ring.
Assemble Governor
g.
If removed, thread the lock nut on the air cylinder.
Then insert the plunger through the buffer spring
2.
Assemble the fast idle cylinder as follows:
and into the air cylinder.
a. Refer to Fig. 2 and insert the dual idle spring
3.
Install the fast idle air cylinder assembly in the
inside of the fast idle air cylinder. Place the
governor housing buffer screw hole.
spring follower, with the small diameter end
down, inside of the spring. Apply pressure on
Install Governor
the spring follower and compress the spring
1. Install the governor on the engine as outlined in
enough to expose the retaining groove. Then
Section 2.7.1.
install the retaining ring in the groove.
2. Install the throttle locking and engine shutdown air
cylinders.
b.
Install a new seal ring in the groove in the piston.
3. Connect the air hoses to the air cylinders.
Then install the air cylinder spring over the
small diameter end of the piston.
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