Rectifier; Assem Bly - Toyota 5R 1969 Repair Manual

8-12 C H A R G I N G S Y S T E M - Alternator

Rectifier

Good o r defective rectifier is classi­
fied by the resistance value between
the rectifier holder and the rectifier
le a d .
T o perform this test,
holder must be
stato r .
R e fe r to paragraph 2 of the Stator
Inspection & R ep air on page 8-11,
1. Rectifier holder positive side.
Connect the tester ( + ) lead onto
the rectifier
lead onto the
shown in figure 8-21, and check
the resistance.
Good rectifier will indicate no r e ­
sistance, and if it indicates a high
resistance, the rectifier is opened.
N ext, turn the polarity of the tester
and check again. If the tester n ee­
dle m oves in either polarity, the
rectifier is shorted. If the needle
does not move in either p ora lity,
the rectifier is opened, and should
be replaced.
If any one of the positive side r e c ­
tifiers is found defective, always
rep la ce the positive side rectifiers
with the holder assembly.
2. Rectifier holder negative side.
Connect the tester ( - ) lead onto
the rectifier holder and ( + ) lead
onto the rectifier lead as shown
in figure 8-22, and check the r e ­
sistance .
Good rectifier will indicate no r e ­
the rectifier
separated from the
holder and the ( - )
rectifier lead
sistance,
resistance, the rectifier is opened.
Next,turn the polarity of the tester,
and check again. If the needle of
the tester moves in either polarity,
the rectifier is shorted.
If the needle does not move in ei­
ther polarity, the rectifier is open­
ed , and should be replaced.
If any one of the negative
rectifiers
w a ys
rectifiers with the holder assem ­
bly .
as

Assem bly

1. Connect the brush holder onto the
stator coil nN M terminal in the fol­
lowing manner.
a. Install the stator coil " N 1 1 t e r ­
minal lead onto the brush h o ld e r.
b. Install the terminal insulators.
c . Position the brush lead at c o r ­
rect position.
F ig . 8-23
and if it indicates high
is found defective, al­
replace the negative
Assem bling Brush
Holder
side
side
V1146