Pontiac tempest 1968 Service Manual page 360

E N G I N E E L E C T R I C A L
6E-11
4. Check other two diodes i n heat sink i n same
manner.
E N D F R A M E D I O D E S
1. To check a diode mounted i n end frame, connect
one of ohmmeter leads to end frame and other ohm­
meter lead to diode lead and note reading (Fig,
6E-16).
2. Reverse ohmmeter leads and note readings.
3. If both readings are very low or very high (read
the same), the diode Is defective. A good diode will
give one low reading and one high reading.
4. Check other two diodes in end frame in same
manner.
T E S T
L A M P
METHOD
An alternate method of checking diodes is to use
a test lamp of not more than 12 volts in place of
ohmmeter.
CAUTION: Do not use 110 volt test lamp to check
diodes.
With stator disconnected, connect test lamp across
each diode as previously described, first in one
direction and then other.
If lamp lights in both checks or fails to light in
both checks, the diode is defective. When checking
a good diode, the lamp will light in only one of two
checks.
Diodes which fail the electrical tests should be
replaced. If diodes must be replaced:
1. With stator removed, support slip ring end
frame in vise or arbor press with J 9717-2 against
casting and position remover J 9717-1 against diode
as shown in Fig. 6E-17.
2. Tighten vise to remove diode.
CA UTION: Never attempt to remove diode by
striking it, as shock may damage other diodes.
3. To install a diode, place new diode in installer
J 9600-2.
J 9717-2
J 9717-1
J 9600-2
\
•
F i g . 6 E - 1 7 Removing Diodes
J 9717-1
F i g . 6 E - 1 8 Installing Diodes
4. Place slip ring end frame in vise so that new
diode is in position and remover J 9717-1 supports
casting (Fig. 6E-18).
5. Tighten vise to install diode.
CAUTION: Never attempt to install diode by
striking it, as shock may damage it and other
diodes.
6. Install stator and connect leads.
C S I GENERATOR REGULATOR CHECKS
The regulator assembly of the integrated CSI
generator may be checked for defects as follows:
1. Separate the stator assembly from the end