Service manual
GOVERNOR
SYSTEM
Leaving the dial gauge set, its condition unvaried, depress the
spring stopper and slide over the torque spring set support
spring case. Read the deflection
of
the dial gauge which cor-
responds to the projection
of
the spring stopper from the
spring case (Measurement should be made repeatedly for an
accurate measure). For the models which do not require any
torque spring action, set the projection to a value
in
the range
ofO to -0.4.
After making the adjustment tighten the locknut to a torque
of
5.8 - 9 ft-lb (0.8 - 1.2kg-m).
TORQUE
SPRING
SET
SEALING
CAP
Tum
in
this
Torque
Spring
Set
until
the
engine's
speed
drops
about
50
rpm
from
high
idling
speed.
(STAKE
AFTER
SETTING)
Adjust
to
specified
number
of
loosening
tums:
=2.2
TURNS
SPECIFIC
TORQUE
SPRING
SET
NOTE:
The illustration shows the early version
of
the Torque
Spring
Set.
The current version is a solid unit.
25
TORQUE
SPRING
SET
INSTALLATION
NOTE:
This adjustment is done at engine overhaul with no
generator installed
or
with the leads removed from the
generator capacitor.
Use the following procedure to install and adjust the Torque
Spring Set.
1.
Set the speed control to the high idling speed (3200 rpm)
position by adjusting the high speed set bolt.
2. Tum
in
the torque spring set until the engine speed drops
about
50 rpm from the high idle speed.
3. From this position, tum back the torque spring set by the
specified number
of
turns (N). Lock the torque spring set
at that position with the special nut.
N
= 2.2 turns
4. Install the torque spring set sealing cap and stake the cap
to prevent further loosening.
FUEL
RUN
SOLENOID
The fuel run solenoid
is
mounted on the engine block aft
of
the fuel injection pump. The solenoid's plunger pushes
against the fuel rack on the fuel injection pump. When this
solenoid de-energizes, it shuts down the engine. See
ENGINE ADJUSTMENTS for assembly instructions.