Installation; R E G U L A T O R; Rem Oval; Electrical Adjustment - Toyota 5R 1969 Repair Manual

8-14 C H A R G I N G S Y S T E M
with the circuit shown in the following
illustration.
F ig . 8-28 Output T e s t Circuit Y 5120
1, Turn on the
then in crease the alternator r e v o ­
lution gradually
motor until the
reach es 14.8 volts, and read the
alternator revolution at that time,
which should be 650 ~ 950 rpm.
2. T u rn on t-he switch
" S 2 1 1 further
voltage at 14.8 volts with a v a r i­
able resistance, increasing the al­
ternator revolution to 1,900 rpm,
and read the ammeter at that tim e.
T h e ammeter should be 30 ~ 40
a m p eres on R S , R T 4 3 L , R T 5 2 L
and R K 1 7 1 B , on the R K s e r ie s
except the R K 1 7 1 B
should be 19 ~ 27 a m p eres.

Installation

Follow the rem oval p ro c e d u re s in the
r e v e r s e o r d e r .
deflection to 13 ~ 20
0 . 7 5 " ) with the fan belt pushed at 11
kg (24 lbs ) .

R E G U L A T O R

Rem oval

1. R em ov e the windshield w a s h e r ja r
on R S s e r ie s if installed.
2. Disconnect the
harness connector plug.
- Alternator. Regulator
switch M S 1 M only,
with a variable
voltage reading
" S I 1 ind
holding the output
s e r ie s this
Adjust the fan belt
mm (0.5 0 to
regulator wiring
3. Rem ove the regulator
bolts, and rem ove the regulator
assem bly.

Electrical Adjustment

If the alternator
actuate properly in accordance with
the electrical adjustment, check the
resistance of the regulator circuits.
If defective, re p a ir the defective p o r ­
tion , and repeat the electrical adjust­
ment after performing the mechanical
adjustment.
A lw a y s use a fully charged battery
to perform the electrical adjustment.

Voltage Relay

Make the test circuit
figure 8-29.
Operate the variable motor, and turn
on the switch ( S ) .
Next, in crease the alternator revolu­
tion gradually, and read the voltage
when the test lamp goes out.
T h e voltage relay operating voltage
should be 4.5 ~ 5.8 volts.
If the voltage is not within the speci­
fied voltage, adjust it by bending the
adjusting arm of the voltage relay.
A l t e r n a to r
Voltage Relay
F i g . 8-29
T e s t Circuit
Voltage Regulator
Make the test circuit
figure 8-30.
Operate the variable motor, and turn
on the switch ( S ) . Check the voltage
and am perage by varying the alternator
revolution gradually at the time when
retaining
regulator does not
as shown in
L ig h t
X
G0176
as shown in