Specifications

48
16 Amp Alternator System with External Regulator
D.C. OUTPUT - RED
SOLENOID
GREEN
LIGHT
SWITCH
AMMETER
MAGNETO
GROUND
BATTERY
REGULATED
D.C. OUTPUT
FUSE
YELLOW
RED
NOTE: D.C. OUTPUT MUST BE DISCONNECTED TO PERFORM
A.C. OUTPUT TEST.
CHECKING THE SYSTEM: An open circuit D.C.
voltage check cannot be made with this system. If
a known good battery fails to maintain a charge,
proceed in making an A.C. voltage test.
Disconnect the red D.C. output connector at the
wire harness and connect the probes from an A.C.
voltmeter to the wire terminals at the regulator-
rectifier (diag. 93).
With the engine running the minimum values should
read:
2500 R.P.M. - 21 Volts A.C.
3000 R.P.M. - 26.5 Volts A.C.
3600 R.P.M. - 31.0 Volts A.C.
If the minimum values are noted, the alternator is
operating properly. If less than the above values are
noted, the alternator is defective.
93
20 Amp Alternator System
In this system, the regulator and rectifier are
combined in one solid state unit which is mounted
into the blower housing of the engine.
CHECKING THE SYSTEM: An open circuit D.C.
voltage check cannot be made. If a known good
battery fails to maintain a charge, proceed to make
an A.C. voltage test.
Disconnect the plug leading to the regulator rectifier,
and insert the A.C. voltmeter probes into the two
outside terminals.
With the engine running the minimum values should
read:
2500 R.P.M. - 32.0 Volts A.C.
3000 R.P.M. - 38.0 Volts A.C.
3600 R.P.M. - 45.0 Volts A.C.
If the minimum readings are noted, alternator is
okay. If the system fails to charge a known good
battery, regulator-rectifier must be defective.
94
YELLOW
(A.C. LEAD)
GREEN
(MAGNETO SHUT-OFF)
YELLOW
(A.C. LEAD)
A.C.
YELLOW
YELLOW
GREEN
RED
GREEN
(MAGNETO SHUT-OFF)
RED
(D.C. WIRE)
RECT./REG.