Lexus GS300/400 (2000 year). Manual - part 116

Z00040

SST (C)

Turn

P10836

SST (B)

SST (A)

Turn

B01648

Wire
Clip

B02021

SST

CH–8

–

CHARGING (2JZ–GE)

GENERATOR

1610

(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.

5.

REMOVE RECTIFIER END FRAME

(a)

Remove the 4 nuts and wire clip.

(b)

Using SST, remove the rectifier end frame.
SST

09950–40011 (09951–04020, 09952–04010,
09953–04030,  09954–04010, 09955–04041)

(c)

Remove the generator washer.

6.

REMOVE ROTOR FROM DRIVE END FRAME

CH047–01

B03131

Ohmmeter

Continuity

B03132

Ohmmeter

No Continuity

CH1023

B01948

Continuity

Ohmmeter

B01949

Ohmmeter

No Continuity

–

CHARGING (2JZ–GE)

GENERATOR

CH–9

1611

INSPECTION

1.

INSPECT ROTOR

(a)

Check rotor for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the slip rings.
Standard resistance: 2.2 – 2.4 

Ω

 at 20

°

C (68

°

F)

If there is no continuity, replace the rotor.

(b)

Check the rotor for ground.
Using an ohmmeter, check that there is no continuity be-
tween the slip ring and rotor.

If there is continuity, replace the rotor.

(c)

Check that the slip rings are not rough or scored.

If rough or scored, replace the rotor.
(d)

Using vernier calipers, 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.

2.

INSPECT STATOR (DRIVE END FRAME)

(a)

Check the stator for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the coil leads.

If there is no continuity, replace the drive end frame assembly.

(b)

Check the stator for ground.
Using an ohmmeter, check that there is no continuity be-
tween the coil lead and drive end frame.

If there is continuity, replace the drive end frame assembly.

P13535

Length

B01954

Ohmmeter

Positive (+)
Terminal

Rectifier
Terminal

B01933

Ohmmeter

Negative (–) Terminal

CH–10

–

CHARGING (2JZ–GE)

GENERATOR

1612

3.

INSPECT BRUSHES

Using vernier calipers, measure the exposed brush length.

Standard exposed length:
9.5 – 11.5 mm (0.374 – 0.453 in.)
Minimum exposed length: 1.5 mm (0.059 in.)

If the exposed length is less than minimum, replace the brush
holder assembly.

4.

INSPECT RECTIFIERS (RECTIFIER HOLDER)

(a)

Check the positive (+) rectifier.
(1)

Using an ohmmeter, connect one tester prob to the
positive (+) terminal and the other to each rectifier
terminal.

(2)

Reverse the polarity of the tester probes and repeat
step (a).

(3)

Check that one shows continuity and the other
shows no continuity.

If continuity is not as specified, replace the rectifier holder.
(b)

Check the negative (–) rectifier.
(1)

Using an ohmmeter, connect one tester probe to
each negative (–) terminal and the other to each
rectifier terminal.

(2)

Reverse the polarity of the tester probes and repeat
step (a).

(3)

Check that one shows continuity and the other
shows no continuity.

If continuity is not as specified, replace the rectifier holder.
5.

INSPECT BEARING

Check the bearing is not rough or worn.
If necessary, replace the bearing. (See page 

CH–11

)

CO09W–03

–

COOLING (2JZ–GE)

COOLANT

CO–1

1539

COOLANT

INSPECTION

1.

CHECK ENGINE COOLANT LEVEL AT RESERVOIR

The engine coolant level should be between the ”LOW” and ”FULL” lines, when the engine is cold.
If low, check for leaks and add ”Toyota Long Life Coolant” or equivalent up to the ”FULL” line.
2.

CHECK ENGINE COOLANT QUALITY

There should not be any excessive deposits of rust or scale around the radiator cap or radiator filler hole,
and the coolant should be free from oil.
If excessively dirty, replace the coolant.