Onan CCK Series Operator's Manual And Parts Catalog

VOLTAGE CHART
FOR CHECKING GOVERNOR REGULATION
SPEED CHART
FOR CHECKING GOVERNOR REGULATION
Maximum No Load Speed
RPM
1920
Nertz (Current Frequency)
64
Minimum Full Load Speed
Without Booster
RPM 1710
Hertz
57
Maximum Speed Drop from No
Load Operation to Pull Load
Operation
RPM
90
Hertz
Preferred Speed Regulation No
Load to Full Load Operation
RPM
1830-1770
Hertz
61-59
Preferred Speed Spread
RPM
60
Hertz
2
LINKAGE
The engine starts at wide open throttle. The length
of the linkage connecting the governor arm to the
throttle shaft and lever is adjusted by rotating the
ball joint. Adjust this length so that with the engine
stopped and tension on the governor spring, the stop
on the carburetor throttle lever just contacts the
underside of the carburetor bowl. This setting allows
immediate control by the governor after starting. It
also synchronizes travel of the governor arm and the
throttle shaft.
SPEED ADJUSTMENT
With the warmed'Up plant operating at no load, and
with the booster external spring disconnected (or
otherwise held inactive), adjust the tension of the
governor spring. Refer to Voltage Chart and the Speed
Chart and select the column which corresponds to the
nameplate of the plant in question. Turn the speed
adjusting nut to obtain a voltage and speed reading
within the limits shown.
SENSITIVITY ADJUSTMENT
Refer to the Governor Adjustment illustration, and to
the Voltage and Speed Charts. Check the voltage and
speed, first with no load connected and again with a
full load. Adjust the sensitivity so as to give the
closest regulation (least speed and voltage difference
between no load and full load) without causing a
hunting condition.
To increase sensitivity (closer regulation), shift the
adjusting clip toward the governor shaft.
An adjustment for too much sensitivity will cause
alternate increase and decrease of engine speed
(hunting).
To decrease sensitivity, shift the adjusting clip toward
the outer end of the governor arm. Too little sensi¬
tivity will result in too much difference in speed
between no load and full load conditions,
Any change in the sensitivity adjustment usually
requires a compensating speed (spring tension) ad¬
justment.
SPEED BOOSTER
After satisfactrxy performance under various loads
has been attained by governor adjustments without
the booster, the booster can be connected. Connect
the booster external spring to the bracket on the
governor link (rod). With the plant operating at no
load, slide the bracket on the governor link just to
the position where there is no tension on^the external
spring (Figure 12).
Apply a full rated electrical load to the generator.
The output voltage should stabilize at nearly the same
reading for full load as for no load operation. The
speed may remain about the same or increase when
the load is applied, resulting in a frequency 1 or 2 hertz
higho' than the no load frequency (1 hertz is equal to

Onan CCK Series Specifications

General

Fuel Type	Gasoline
Fuel System	Carburetor
Frequency	60 Hz
RPM	1800 RPM
Starting System	Electric or Recoil
Starting Method	Electric or Recoil Start
Voltage	120/240V
Compression Ratio	6.5:1
Ignition System	Battery Ignition
Phase	Single-phase