I
GOVERNOR *
Standard equipment is an externally mounted, centrifugal flyweight type mechanical governor. *
The governor is flange mounted on the front support plate and is driven off the camgear. Lubrication is
provided by an external oil line which connects the engine lube system to the governor. NO regular ser-
vice is required on the unit. The governor is adjusted during run-in at the factory and further adjust-
ment should not be needed unless greatly varying load conditions are encountered or if poor governor
control develops after extended usage.
GOVERNOR ADJUSTMENT
If governor setting is too sensitive, hunting or speed surging will occur with changing load.
If a
considerable drop in speed is experienced whe,n \normal load is applied,
for greater sensitivity.
the governor should be adjusted
.
m
If one of the governor settings is readjusted,
the other should also be readjusted since each has
an effect on the other. With plant running at full load, governed speed,
readjust governor as follows:
1..
Feed R;nT
Check speed with hand tachometer or by frequency meter if plant is so equipped.
oosen oc ng nut on speed adjusting screw,
turn screw in clockwise direction to increase speed
(and frequency) or in counterclockwise direction to decrease speed.
Follow this adjustment with Step 2.
Lock nut at new setting.
2. Sensitivity (Droop) Adjustment: Test under normal load conditions. If readjustment is needed,
proceed as follows.
To make governor control more sensitive,
loosen the nut at bottom of adjust-
ing eye bolt and tighten the top nut thereby drawing the head of the ey’e bolt closer to the governor
arm pivot point.
To make governor control less sensitive,
loosen the top nut and tighten the bot-
tom nut to move the head of the eye bolt away from the pivot point.
After sensitivity is correct,
tighten the. nut that was previously loosened to lock the eye bglt at the new setting.
Recheck speed
after sensitivity adjustment since changing this will also affect speed.
THROTTLE LINKAGE
/
m
SPEED
l----Y/ J
ADJUSTMENT 1
-GOVERNOR ARM
PIVOT POINT.
EYE
closer to
BOLT HEAD: Move head
pivot point
for greater sensitivity-
away for less sensitivity.
LUBE
LINE
FIGURE 7-1
-- GOVERNOR ADJUSTMENTS
71
l
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