1991 LEXUS SC400 Service Repair Manual

Page 377 of 4087

LEXUS SC400 1991  Service Repair Manual 
ON±VEHICLE REPAIR
AT06Y±04
CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the ªLOCKº posi-
tion and the negative (±) terminal cable is disconnected

Page 378 of 4087

LEXUS SC400 1991  Service Repair Manual 
6.  INSTALL EXTENSION HOUSING REAR OIL SEAL
(a)  Coat the lip of oil seal with MP grease.
(b)  Using SST and a hammer, drive in a new oil seal with the lipfacing downward.
SST 09309±37010
Oil seal d

Page 379 of 4087

LEXUS SC400 1991  Service Repair Manual 
SPEED SENSOR
NO.1 VEHICLE SPEED SENSOR
REPLACEMENT
(w/ Speedometer Driven Gear)
AT070±04
1.  REMOVE TRANSMISSION CONTROL ROD REAR SIDERemove the transmission control rod rear side set nut.
2. DISCON

Page 380 of 4087

LEXUS SC400 1991  Service Repair Manual 
NO.2 VEHICLE SPEED SENSOR
REPLACEMENT
AT0GF±02
1. DISCONNECT NO.2 VEHICLE SPEED SENSORCONNECTOR
2.  REMOVE NO.2 VEHICLE SPEED SENSOR
(a)  Remove the bolt and No.2 vehicle speed sensor.
(b)  Remove t

Page 381 of 4087

LEXUS SC400 1991  Service Repair Manual 
PARK/NEUTRAL POSITION (PNP)
SWITCH
PARK/NEUTRAL POSITION SWITCH
REPLACEMENT
AT073±04
1.  REMOVE FRONT EXHAUST PIPE(See pages  EG±204)
2.  DISCONNECT PARK/NEUTRAL POSITION SWITCH CONNECTOR
3.  REMOV

Page 382 of 4087

LEXUS SC400 1991  Service Repair Manual 
VALVE BODY
VALVE BODY REMOVAL
AT0GG±02
1. DRAIN ATF
2.  REMOVE FRONT EXHAUST PIPE(See pages  EG±204)
3.  REMOVE OIL PAN
(a)  Remove the 19 bolts.
(b)  Install the blade of SST between the transmiss

Page 383 of 4087

LEXUS SC400 1991  Service Repair Manual 
7.  REMOVE 4 SOLENOID VALVES
(a)  Remove the No. 1 and No.2 solenoid valves.
(b)  Remove the O±rings from the No. 1 and No.2 solenoidvalves.
(c)  Remove the lock plate and No.3 and No.4 solenoid val

Page 384 of 4087

LEXUS SC400 1991  Service Repair Manual 
VALVE BODY INSTALLATION
AT0GH±02
1.  INSTALL 4 SOLENOID VALVES
2.  INSTALL CHECK BALL BODY AND SPRING AND HOLDIT
3. INSTALL VALVE BODY
(a)  Align the groove of the manual valve to the pin of the lev