2000 LEXUS GS400 compression ratio

I01450
Condition: Insufficient cooling
I01393
Condition : Does not cool AC±8
± AIR CONDITIONINGAIR CONDITIONING SYSTEM
2693 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(8) Expansion valve improperly
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on both low
and high pressure sides

Frost or large amount of dew on
piping on low pressure side
Trouble in expansion valve

Excessive refrigerant in low
pressure piping

Expansion valve opened too
wide
Check expansion valve
Replace if defective
(9) Defective compression compressor
Symptom seen in
refrigeration systemProbable causeDiagnosisRemedy

Pressure too high on low and
high pressure sides

Pressure too low on high pres-
sure side
Internal leak in compressor

Compression defective

Valve leaking or broken sliding
parts
Repair or replace compressor

D01066
D01067
D0190412
3
D01069
D01070
Tip of Screwdriver
AT±18
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1966 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
7. REMOVE SHIFT LEVER GUIDE HOUSING AND INDI-
CATOR LAMP SUB±ASSEMBLY
(a) Disconnect the indicator lamp wire and connector from
the shift lever plate.
(b) Remove the shift lever guide housing with the indicator
lamp sub±assembly from the shift lever plate.
(c) Remove the indicator lamp sub±assembly from the shift
lever guide housing.
8. DISASSEMBLE INDICATOR LAMP SUB±ASSEMBLY
(a) Remove the bulb from the indicator lamp wire sub±as-
sembly.
(b) Using a small screwdriver, remove the terminals of the in-
dicator lamp wire sub±assembly from the connector, as
shown in the illustration.
9. REMOVE SHIFT LEVER DETENT PIN, SHIFT LEVER
SPRING DAMPER AND COMPRESSION SPRING
FROM SHIFT LEVER SUB±ASSEMBLY
10. REMOVE SPRING HOLDER AND SHIFT LEVER TOR-
SION SPRING
(a) Using a screwdriver, remove the spring holder.

D01081
D01079
D01922
D01076
D01075
Install
Lower
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
AT±23
1971 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Install the shift lever sub±assembly.
(c) Using a pin punch and hammer, drive in the pin.
4. INSTALL SHIFT LOCK CONTROL UNIT ASSEMBLY
(a) Connect the shift lock solenoid link and install a new
slotted spring pin.
(b) Install the compression spring to the shift lock solenoid
link.
(c) Push and install the shift lock solenoid link with the com-
pression spring to the shift lock control unit assembly.
(d) Install the shift lock control unit assembly.
HINT:
Do not torque the shift lock control unit assembly set screws.
5. INSTALL SHIFT LOCK PLATE STOPPER
(a) Install the shift lever anti±rattle cushion and shift lock
plate stopper cap to the stopper.
(b) Install the stopper to the shift lever plate.
HINT:

Check that the claw of the shift lock plate stopper firmly
fits in and slides smoothly.

Insert and connect the projection of the shift lock plate
stopper into the square hole of the shift lock control unit
assembly.
6. INSTALL NO.1 SHIFT LOCK SWITCH PLATE
(a) Install the shift lever anti±rattle cushion to the roller.
(b) Install the roller and shift lever anti±rattle cushion to the
plate.
(c) Install the No.1 shift lock switch plate in the direction
shown in the illustration and lower to the direction shown
by an arrow.
HINT:
Connect the groove of the No.1 shift lock switch plate to the pro-
jection of the shift lock control unit assembly.

A02638
A02651
A02664
EX
IN135
24
135
24 1 1
EM±6
± ENGINE MECHANICAL (2JZ±GE)VALVE CLEARANCE
1360 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. REMOVE NO.3 TIMING BELT COVER
Using a 5 mm hexagon wrench, remove the 4 bolts, oil filler cap,
timing belt cover and gasket.
6. REMOVE IGNITION COILS AND HIGH±TENSION
CORD SET ASSEMBLY (See page IG±7)
7. REMOVE SPARK PLUGS
8. DISCONNECT ENGINE WIRE FROM CYLINDER HEAD
COVERS
9. REMOVE CYLINDER HEAD COVERS
(See page EM±33)
10. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley and align its groove with the
timing mark º0º of the No.1 timing belt cover.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that the timing marks of the camshaft timing pul-
leys are aligned with the timing marks of the No.4 timing
belt cover.
If not, turn the crankshaft 1 revolution (360°).
11. INSPECT VALVE CLEARANCE
(a) Check only those valves indicated in the illustration.

Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.

Record the valve clearance measurements of those
that are out of specification. They will be used later
to determine the required replacement adjusting
shim.
Valve clearance (Cold):
Intake0.15 ± 0.25 mm(0.006 ± 0.010 in.)
Exhaust0.25 ± 0.35 mm (0.010 ± 0.014 in.)
(b) Turn the crankshaft pulley 1 revolution (360°), and align
the groove with the timing mark º0º of the No.1 timing belt
cover.

PP0TF±01
PP±6
± PREPARATIONENGINE MECHANICAL (2JZ±GE)
58 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EQUIPMENT
Abrasive compoundValve
Bolt (Part No. 90105 ± 10345)For suspending engine
Bolt (Part No. 90119 ± 18001)Crankshaft pulley, Crankshaft timing pulley
Caliper gauge
CO/HC meter
Compression gauge
Connecting rod aligner
Cylinder gauge
Dial indicator
Dye penetrant
Engine tune±up tester
Heater
Micrometer
Mirror
Magnetic finger
No.1 engine hanger (Part No. 12281 ± 46050)For suspending engine
OBDII scan tool
Piston ring compressor
Piston ring expander
Plastigage
Precision straight edge
Press
Ridge reamerCylinder
Soft brash
Solvent
Spring testerValve spring
Steel squareValve spring
Thermometer
Torque wrench
Valve seat cutter
Vernier calipers
V±block
Wire brush