Specifications

59
5 Amp Alternator System Regulator-
Rectifier Under Blower Housing
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.
To do this, the blower housing must be removed, and
the regulator-rectifier must be brought outside of the
blower housing.
Disconnect the red D.C. output connector at the wiring
harness (not at the regulator-rectifier) and connect
the probes from an A.C. voltmeter to the wire terminals
at the regulator-rectifier (diag. 112).
To avoid injury, at no time should the
engine be started with the blower housing removed.
With the engine running the minimum values should
read:
2500 R.P.M. - 19.0 Volts A.C.
3000 R.P.M. - 23.0 Volts A.C.
3300 R.P.M. - 26.0 Volts A.C.
3600 R.P.M. - 28.0 Volts A.C.
If the minimum values are noted, the regulator-rectifier
is defective. If less than above readings, the alternator
is defective.
7 Amp Alternator System Regulator-
Rectifier External to Engine
CHECKING THE SYSTEM: To check the system,
disconnect the D.C. or B (+) wire at the switch end and
measure D.C. voltage between the lead and ground
(diag. 113).
With the engine running the minimum values should
read:
2500 R.P.M. - 9.0 Volts D.C.
3000 R.P.M. - 11.0 Volts D.C.
3600 R.P.M. - 14.0 Volts D.C.
If the minimum readings are noted, system is okay.
CAUTION
113
REGULATOR-RECTIFIER
MUST BE GROUNDED
D.C. VOLTMETER
B + TERMINAL WIRE
112
CAUTION: BLOWER HOUSING MUST BE
INSTALLED WHEN RUNNING ENGINE
A.C. VOLTMETER
Yellow
Red
NOTE: D.C. OUTPUT MUST BE DISCONNECTED TO
PERFORM A.C. OUTPUT TEST.
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