Slip Ring End Frame Generator; Checking Stator; Check For Grounded Brush Lead Clip C.s. I. Generator - Pontiac Grand Prix Service Manual

ENGINE
ELECTRICAL
6E-9
REGULATOR L E A D S
2
H E A T
SINK
L E A D ATTACHING NUTS
REGULATOR L E A D C L I P S 3, 4, AND 5
Fig. 6E-14 Slip Ring End Frame
-
Standard
Generator
lamp or ohmmeter between stator leads. If lamp fails
to light and if ohmmeter reading is high, there is an
open in stator windings (see Fig. 6E-15).
(CHECK FOR OPENS)
OHMMETER
OHMMETER OHMMmR
(CHECK FOR OPENS)
(CHECK FOR G R O U N D S )
4
Fig. 6E-15 Checking Stator
c. A short circuit in stator windings is difficult to locate
without laboratory test equipment, due to low resist-
ance of windings. However, if all other electrical
checks are normal and alternator fails to supply rated
output, shorted stator windings are indicated.
d. Stator which fails above test should be replaced.
4. If necessary, stator may be cleaned by brushing with
oleum spirits.
CA UTION: Do not clean in solvent.
5. The stator can be installed by reversing steps 1 and
2.
DIODE TRIO - C.S.I. GENERATOR
The diode trio is identified in Fig. 6E-13. Before
removing the diode trio, connect an ohmeter, using
lowest range scale, from brush lead clip to end frame
as shown in Fig. 6E-16, then reverse lead connections.
If both readings are zero, check for grounded brush
lead clip caused by omission of insulating washer (Fig.
6E-16), omission of insulating sleeve over screw, or
damaged insulating sleeve. Remove screw to inspect
Fig. 6E-16 Check for Grounded Brush Lead Clip
sleeve.
C.S. I. Generator
OHMMETER
DIODE TRIO
RECTIFIER BR
NUTS