Specifications

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. 85).

CAUTION: 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.

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. 86).

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.

7 Amp Alternator System Regulator-Rectifier External to Engine

REGULATOR/RECTIFIER

MUST BE GROUNDED

D.C. VOLTMETER

B + TERMINAL WIRE

(Continued on Next Page)

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.