Toyota 3R-B 1969, Repair Manual

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C H A R G I N G S Y S T E M - Alternator & Regulator 8-5
Perm issible maximum revolution
Allow able surroung temperature
Ground
Direction of revolution
Weight
Testing specification:
No load revolution at normal
temperatu re
Output revolution at normal
temperature
Operation
11,000 rpm
-40 °C ~ 80 °C (-40 ° F ~ 176 ° F )
Negative
Clock w ise as seen from pulley
Approximately 3.5 kg (7 .7 lbs)
14 volts, z e r o a m p ere, at 900 + 100
rpm
14 volts, 25 a m p e re s , at less than
3 ,500 rpm
T h e alternator generating circuit fo r the R S serieis and fo r the R T and R K
s e r ie s as shown in the above illustration is slightly different. T h e R S s e r ie s
a re equipped with the ammeter together with the ch a rge warning light, but the
R T and R K s e r ie s a re equipped only with the charge warning light deleting the
a m m eter.
'W
When the ignition switch is closed, the current flows from the battery to the
voltage relay points " P o " and MP 1 M, through the ch arge warning light, therefore,
the charge warning light g lo w s . A t the same time, the exciting current from the
battery flows to the ro tor coil through the fuse f o r the turn signal, voltage r e ­
gulator points " P L 1 11 , " P L o 11 , brushes and the slip rin gs, causing the ro to r to
magnitize.
In these condition, as the rotor is rotated, the three-ph ase alternating current is
generated within the stator coil, and the alternating current is fully rectified into