Onan CCK Service Manual

ONE PROD ON FIELD COIL
LEAD. ONE PROD ON FRAME.
FIGURE 52. FIELD COIL GROUND TEST
Testing Field Coils for Open Circuit Place one prod
on the connector and the other on a clean spot on the
brushholder. Figure 53. if continuity is good, the field
coil is okay. Check all brush holders in the same
manner.
SHOULD LIGHT.
FIGURE 53. TEST FOR OPEN FIELD COIL
Inspection of Brushes: When brushes are worn more
than 0.3 inch (7.6 mm}, repiacethem. Figure54shows
the wear limit. See that the brushes move smoothly in
the brushholders.
.28
p_n_n
[T
pj-i_n
WEAR
!
WEAR
LIMIT
♦ 73"
limit
1 ' ?
_iL j_
-SS
BEGIN SPEC J.
SPEC G
FIGURE 54. BRUSH WEAR LIMITS
RnrfnTt Sprin 9 Tension: Measure brush
spring tension with a tension meter, Figure 55. Push
the brush into its holder and take the reading just as
“ ® ,l 9 ht| y Projects from the brushholder. On a
new brush the spring tension should be 49 to 59
ounces (1.37-1.65 kPa) forengines begin Spec J and
9 to 38 ounces (0.81 to 1.06 kPa} for Spec G engines.
FIGURE 55. MEASURING BRUSH SPRING TENSION
Assembly; Reassembly is much the reverse of *
disassembly procedure. Follow a few precautions and
procedures:
1. Clean all parts carefully with a dry cloth and
compressed air if available.
| Do not immerse bearing equip-
ped parts in cleaning fluid .
Clean with a brush dipped In mineral spirits . Do
not immerse the overrunning clutch in cleaning
solvent
2. Apply 20 weight oil to armature shaft and splines.
Use grease sparingly for solenoid starter's shift
lever pin. joint of shift lever and plunger, plunger
and spacing washers at end of the shaft.
3. Use spacing washers to adjust armature end play
of .004 to .020 inch (0.102 to 0.508 mm).
4. When assembling starter to engine oil base, do
not draw the mounting bolts up tight The gears
should have .004- to .007-inch (0.103-0.178 mm)
backlash. Tap the starter in or out from the oil
base to adjust. Then tighten bolts securely.
49

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)