Onan CCK User Manual

GENERATOR MAINTENANCE
The generator normally needs little care other than a
periodic check of the brushes, commutator and
collector rings. If a major repair job on the generator
should become necessary, have the equipment
checked by a competent electrician who is thorough¬
ly familiar with the operation of electric generator
equipment.
Brush Replacement
Install new brushes when the old ones are worn to the
dimensions shown in Figure 14. Remove the end bell
band to expose the brush holders. Remove the three
screws holding each brush holder in place (Figure
14). Remove the old brushes and clean the holders so
the new brushes can move easily in their holders.
Install the new brushes in the same manner as the old
ones. Always use the correct brush as listed in the
PARTS INFORMATION section. Never substitute a
brush which may appear to be the same for it may
have different characteristics. New brushes are
shaped to fit and seldom need sanding to seat
properly. If some brush sparking occurs after replac¬
ing brushes, run the set under a light load until the
brushes wear to a good seat.
Collector rings acquire a glossy brown finish in
normal operation. Do not attempt to maintain a bright
newly machined appearing surface. Ordinary clean¬
ing with a dry, lint free cloth is usually sufficient. Very
fine sandpaper (#00) may be used to remove slight
roughness.
MEASURE FROM TOP FACE OF
BRUSH BLOCK TO TOP OF BRUSH
DC
AC
NEW 5/8”
11/16”
y 2 WEAR
13/16”
! 7/8”
i
REPLACE
1 ”
i
j 1 1/16”
•
FIGURE 14. BRUSH LENGTH
14

Onan CCK Specifications

General

Cylinders	2
Ignition System	Battery ignition
Fuel Type	Gasoline
Cooling System	Air-cooled
Fuel System	Carburetor
Starter	Electric
Governor	Mechanical
Max RPM	1800 RPM
Engine Type	4-cycle
Bore and Stroke	3.25 x 3.625 inches (82.55 x 92.08 mm)