Specifications

49
Before performing the following tests see page 48, A through F.
TEST NO. 1 (NO CHARGE TO BATTERY)
NOTE: Tests must be followed in their order of listing. EXAMPLE: Test No. 1 must be completed before
proceeding to Test No. 2. Replace any defective part.
10 AMP ALTERNATOR TEST
Disconnect B+ at battery lead (NOTE: Keep test to a minimum with B+
wire disconnected from the battery) and check D.C. voltage between
B+ regulator lead and case:
1. 2500 RPM 13.0 volts min. 1. System okay. Check for
3000 RPM 16.0 volts min. defective ammeter.
3600 RPM 20.00 volts min.
2. If less than above voltages but 2. Check for possible defective
greater than 0 volts. regulator-rectifier.
3. If 0 volts at any above speeds. 3. Check for defective stator or
regulator-rectifier.
TEST NO. 2 (NO CHARGE TO BATTERY)
With battery connected, check B+ to ground voltage with D.C. voltmeter.
a. If charge rate increases. System okay. Battery was charged
fully.
b. If charge rate does not increase. Check for defective stator or
regulator.
TEST NO. 3 (NO CHARGE TO BATTERY)
Disconnect plug from regulator-rectifier and test A.C. voltage at plug.
1. 2500 RPM: Voltage reads less 1. Defective stator
than 16 volts.
2. Voltage reads over 16 volts. 2. Defective regulator-rectifier.
3. 3000 RPM: Voltage reads less 3. Defective stator
than 19 volts.
4. Voltage reads over 19 volts. 4. Defective regulator-rectifier.
5. 3600 RPM: Voltage reads less 5. Defective stator
than 24 volts.
6. Voltage reads over 24 volts. 6. Defective regulator-rectifier.
1. 2500 RPM: If 11.0 volts or higher
place load (head lights) on battery
to reduce battery voltage to 10.0
volts. 3000 RPM: If 20.0 volts
or higher place load (head lights)
on battery to reduce battery
voltage to 11.0 volts. 3600 RPM:
If 13.5 volts or higher place load
(head lights) on battery to reduce
battery voltage to 12.0 volts.
A.C. VOLTMETER LEADS
REGULATOR-RECTIFIER
D.C. VOLTMETER LEADS
B+ TERMINAL WIRE