Perkins 103-06 - Page 48

Regulator
RS5101
Re
d
Alternator
e
G
een
Blue
12V _
Battery
Blac
k
Charge
lamp
Load
1. Flywheel complete
2. Stator complete 3.
Plate
4. Ball bearing
E0104
103/06 Tests:
PB121
Inspection
A. Connect an ammeter and a voltmeter as shown (
PB121) and check the relation of the charging
current with the terminal voltage.
Normal Abnormal Cause
Relation between charge 1 More than 14A at 14V More than 14A at battery Improper operation of
current and battery voltage more than 15V regulator
terminal voltage
(at alternator 5200rpm)
2 14A-0.5A at 14-15V
Charge current OA Defective alternator or
regulator or improper
connection
Flowing charge current
but low battery voltage
Defective battery
(overdischarge)
Alternator Performance of unit alone
No load voltage (between
blue and blue) tester
reading at operation (
about 5200rpm)
Tester Between
continuity blue and
blue of
lead wire
Insulation resistance (
between a lead wire and
coil plate)
Normal Abnormal Cause
More than AC 28V Less than AC28V AC OV Demagnetized flywheel,
disconnected coil or
wiring harness
Continuity observed Continuity not observed Disconnected coil
More than 3MSI Less than 3Mf I Improper coil insulation