Page 1545 of 1807
- CHARGINGCHARGING SYSTEM
CH-5
1528 Author: Date:
1997 SUPRA (RM502U)
10. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the high
beam headlights and place the heater blower switch at
ºHIº.
(b) Check the reading on the ammeter.
Standard amperage: 30 A or more
If the ammeter reading is less than the standard amperage, re-
pair the generator.
HINT:
If the battery is fully charged the indication will sometimes be
less than standard amperage.
11. REINSTALL ENGINE UNDER COVER
Page 1546 of 1807
CH03M-01
S05220
Drive Belt Tensioner Damper (2JZ-GTE M/T) Generator WireGenerator Connector
Generator
Drive Belt
Pipe Clamp (A/T)A/T Oil Cooler Pipe Pipe Bracket (A/T)
No.2 Fan Shroud
No.2 Air Tube
Engine Under Cover
x 16 (2JZ-GTE) CH-6
- CHARGINGGENERATOR
1529 Author: Date:
1997 SUPRA (RM502U)
GENERATOR
COMPONENTS
Page 1547 of 1807
P19044B02786
Drive End Frame
(Stator)
PulleyBearing RetainerRotorBearing Cover
Front BearingRear
BearingGenerator
Washer
Rear End Cover
Brush Holder
Terminal Insulator
Wire Clip
Plate Terminal
Brush Holder Cover
Seal Plate
Voltage Regulator
Rectifier Holder
Rubber Insulator x 4 Rectifier End Frame 2JZ-GTE M/T
PulleyDrive End Frame
(Stator)Rotor
Front BearingBearing RetainerBearing Cover
Generator
Washer
Wire ClipRear
Bearing
Terminal InsuratorBrush Holder Cover
Brush Holder
Rectifier End Frame
Rubber Insulator x 4Rectifier HolderVoltage RegulatorSeal Plate
Rear End CoverPlate Terminal Except 2JZ-GTE M/T
- CHARGINGGENERATOR
CH-7
1530 Author: Date:
1997 SUPRA (RM502U)
Page 1548 of 1807
CH03N-01
Z09078
2JZ-GTE M/T
Except 2JZ-GTE M/T
Z16728
A/T
P11566
CH-8
- CHARGINGGENERATOR
1531 Author: Date:
1997 SUPRA (RM502U)
REMOVAL
1. REMOVE ENGINE UNDER COVER
2. 2JZ-GTE:
REMOVE NO.2 AIR TUBE FOR CAC
3. REMOVE NO.2 FAN SHROUD
4. 2JZ-GTE M/T:
REMOVE DRIVE BELT TENSIONER DAMPER
Torque: 20 N´m (200 kgf´cm, 14 ft´lbf)
5. REMOVE DRIVE BELT
6. REMOVE GENERATOR
(a) Disconnect the generator connector.
(b) Remove the rubber cap and nut, and disconnect the gen-
erator wire.
(c) Disconnect the generator wire clamp from the wire clip on
the generator.
(d) A/T:
Remove the bolt and pipe clamp, and disconnect the 2 oil
cooler pipes from the generator.
(e) Remove the bolt, nut, pipe bracket and generator.
Torque: 40 N´m (400 kgf´cm, 30 ft´lbf)
Page 1549 of 1807
CH03S-01
P10825
P11838
P11841
P11842
P10634
- CHARGINGGENERATOR
CH-9
1532 Author: Date:
1997 SUPRA (RM502U)
DISASSEMBLY
1. REMOVE REAR END COVER
(a) Remove the nut and terminal insulator.
(b) Remove the bolt, 3 nuts, plate terminal and end cover.
2. REMOVE BRUSH HOLDER AND VOLTAGE
REGULATOR
(a) Remove the brush holder cover from the brush holder.
(b) Remove the 5 screws, brush holder and voltage regulator.
(c) Remove the seal plate from the rectifier end frame.
3. REMOVE WIRE CLIP
Remove the nut and wire clip.
4. REMOVE RECTIFIER HOLDER
(a) Remove the 4 screws and rectifier holder.
(b) Remove the 4 rubber insulators.
Page 1550 of 1807
P10835
Turn
SST (B)SST (A)
Z00040
SST (C)
Turn
P10836
Turn
SST (B)SST (A)
P10635
P18676
SST CH-10
- CHARGINGGENERATOR
1533 Author: Date:
1997 SUPRA (RM502U)
5. REMOVE PULLEY
(a) Hold SST (A) with a torque wrench, and tighten SST (B)
clockwise to the specified torque.
SST 09820-63010
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
(b) Check that SST (A) is secured to the rotor shaft.
(c) Mount SST (C) in a vise.
(d) Insert SST (B) into SST (C), and attach the pulley nut to
SST (C).
(e) To loosen the pulley nut, turn SST (A) in the direction
shown in the illustration.
NOTICE:
To prevent damage to the rotor shaft, do not loosen the
pulley nut more than one-half of a turn.
(f) Remove the generator from SST (C).
(g) Turn SST (B), and remove SST (A and B).
(h) Remove the pulley nut and pulley.
6. REMOVE RECTIFIER END FRAME
(a) Remove the 3 nuts.
(b) Using SST, remove the rectifier end frame.
SST 09950-40010
(c) Remove the generator washer.
7. REMOVE ROTOR FROM DRIVE END FRAME
Page 1551 of 1807

CH03O-01
CH0784
Ohmmeter
Continuity
CH0783
Ohmmeter
Continuity
CH1023
P10622
Continuity
Ohmmeter
P10623
No Continuity
Ohmmeter
- CHARGINGGENERATOR
CH-1 1
1534 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT ROTOR FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
slip rings.
Standard resistance: 2.7 - 3.1 W at 20°C (68°F)
If there is no continuity, replace the rotor.
2. INSPECT ROTOR FOR GROUND
Using an ohmmeter, check that there is no continuity between
the slip ring and rotor.
If there is continuity, replace the rotor.
3. INSPECT SLIP RINGS
(a) Check that the slip rings are not rough or scored.
If rough or scored, replace the rotor.
(b) Using a vernier caliper, measure the slip ring diameter.
Standard diameter:
14.2 - 14.4 mm (0.559 - 0.567 in.)
Minimum diameter:
12.8 mm (0.504 in.)
If the diameter is less than minimum, replace the rotor.
4. INSPECT STATOR FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
coil leads.
If there is no continuity, replace the drive end frame assembly.
5. INSPECT STATOR FOR GROUND
Using an ohmmeter, check that there is no continuity between
the coil lead and drive end frame.
If there is continuity, replace the drive end frame assembly.
Page 1552 of 1807

P13535
Length
P10624
Ohmmeter
Positive (+)
Terminal
Rectifier
Terminal
P10625
Ohmmeter
Negative (-)
Terminal CH-12
- CHARGINGGENERATOR
1535 Author: Date:
1997 SUPRA (RM502U)
6. INSPECT EXPOSED BRUSH LENGTH
Using a vernier caliper, measure the exposed length.
Standard exposed length:
9.5 - 11.5 mm (0.347 - 0.453 in.)
Minimum exposed length:
1.5 mm (0.059 in.)
If the exposed length is less than minimum, replace the brush
holder.
7. INSPECT POSITIVE RECTIFIER
(a) Using an ohmmeter, connect one tester probe to the posi-
tive (+) terminal and the other to each rectifier terminal.
(b) Reverse the polarity of the tester probes and repeat step
(a).
(c) Check that one shows continuity and the other shows no
continuity.
If continuity is not as specified, replace the rectifier holder.
8. INSPECT NEGATIVE RECTIFIER
(a) Using an ohmmeter, connect one tester probe to each
negative (-) terminal and the other to each rectifier termi-
nal.
(b) Reverse the polarity of the tester probes and repeat step
(a).
(c) Check that one shows continuity and the other shows no
continuity.
If continuity is not as specified, replace the rectifier holder.
9. INSPECT FRONT BEARING
Check that the bearing is not rough or worn.
10. INSPECT REAR BEARING
Check that the bearing is not rough or worn.