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INTER
AV
TROUBLE
SHOOTING
CHART
|
Condition or Fault |
1 AlternatorRegulator Terminal |
2 Volt.
Regulator Regulator Terminal |
3 Volt.
Regulator Field Terminal |
4 AlternatorField
Terminal |
Normal
|
1.0
+/- 0.2 |
1.0
+/- 0.2 |
1.0
+/- 0.4 |
1.0
+/- 0.4 |
Field
Circuit Open
1
Broken Wire 2
Open Field Switch 3
Open O.V.R. |
7.5 7.5 7.5 |
7.5 7.5 7.5 |
7.5 7.5 7.5 |
7.5 7.5 7.5 |
|
4
Open Brush 5
Faulty Rotor |
7.5 7.5 |
7.5 7.5 |
7.5 7.5 |
7.5 7.5 |
Faulty
Regulator
1
Regulator Open 2
Regulator Shorted |
9.00
/ 11.5 0.8 |
9.00
/ 11.5 0.8 |
0 0.6 |
0 0.6 |
Reg.
Wire Open
|
12.5 |
0 |
0 |
0 |
Resistor
Open
|
0
- 0.4 |
0
- 0.4 |
0 |
0 |
Grounded
|
0 |
0 |
0 |
0 |
external
diode plate, field circuit, regulator wire
|
||||
1
Engine Not Running
2
Master Switch
“ON”
3
Field Switch
“ON”
4
Confirm Alt.
Output Terminal has 12.5 Volts
5
Take voltage
readings at points 1 Thru 4 to diagnose fault
Suggestions:
Be sure Alternator Output
Plate (external diode plate) is not touching
ground.
Be sure Alternator is Grounded with adequate size wire.
Back to Alternators Wiring Diagram T/S Suggestions Home