Onan CCK Service Manual

TESTING PHELON 15 AMP SYSTEM
BASIC TEST
PROCEDURE TEST VALUES
1. Battery
Battery Voltage - unit not running 12VDC
2. Regulator
Battery Voltage after unit is
running 3 to 5 minutes
13.6 to 14.7 VDC
3. Alternator
Stator and
Wiring
Ohmmeter reading from
stator output - unit not running.
Check at plug.
.11 to .19 Ohms
4. Alternator
and Wiring
Measure AC open circuit stator
voltage with unit running. Measure
between two stator leads with
plug disconnected and unit
running at approximately 3600 rpm.
28 VAC Minimum
65 VAC Maximum
20 AMP FLYWHEEL ALTERNATOR
SYSTEM
System identification: Syncro flywheel alternator
systems use a separate regulator and a separate
rectifier. There are two black wires and one red wire
coming from the stator assembly. For testing this
system, use a voltmeter-ohmmetersuch as a Simpson
270. Following are various alternator problems with
individual test procedures.
ALTERNATOR STATOR
MOUNTED BEHIND BLOWER WHEEL
_1 SYNCHRO 20 AMP. SYSTEM
STATOR. ASSY.
RECTIFIER
FIGURE 39. 20 AMP SYSTEM
42

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)