clock LEXUS GS400 2000 Service Owner's Manual

CH045±01
B02027
Turn
B01646
B01962
Engine
Wire Clamp
Pipe Clamp
B01963
Pipe Bracket
CH±6
± CHARGING (2JZ±GE)GENERATOR
1608 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE UNDER COVER
2. REMOVE DRIVE BELT
Loosen the belt tension by turning the drive belt tensioner clock-
wise, and remove the drive belt.
NOTICE:
At the time of installation, please refer to the following
items. Do an on±vehicle inspection. (See page CH±1)
3. REMOVE GENERATOR
(a) Disconnect the generator connector.
(b) Remove the rubber cap and nut, and disconnect the gen-
erator wire.
(c) Disconnect the engine wire clamp from the wire clip on the
generator.
(d) Remove the bolt and pipe clamp, and disconnect the 2
A/T 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)

B01655
CH046±05
B01654
Plate Terminal
B01997
B01650
P10835
Turn
SST (B)SST (A)
± CHARGING (2JZ±GE)GENERATOR
CH±7
1609 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
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 REGULA-
TOR
(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 RECTIFIER HOLDER
(a) Remove the 4 screws and rectifier holder.
(b) Remove the 4 rubber insulators.
4. 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.

CO09Z±03
A02725Turn
Loosen
B01614
Water Bypass Outlet
No.1 Water Bypass Hose
B01638
Clamp Bracket
Connector Bracket
B01572No.2 Water Bypass Pipe
± COOLING (2JZ±GE)WATER PUMP
CO±5
1543 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE RADIATOR ASSEMBLY
(See page CO±18)
2. REMOVE DRIVE BELT AND WATER PUMP PULLEY
(a) Loosen the 4 nuts holding the water pump pulley to the
water pump.
(b) Loosen the drive belt tension by turning the drive belt ten-
sioner clockwise, and remove the drive belt.
(c) Remove the 4 nuts and water pump pulley.
3. REMOVE TIMING BELT AND IDLER PULLEY
(See page EM±16)
4. REMOVE WATER BYPASS OUTLET AND NO.1
WATER BYPASS PIPE
(a) Remove the 2 bolts, water bypass outlet and No.1 water
bypass pipe.
(b) Remove the 3 O±rings from the water bypass outlet and
No.1 water bypass pipe.
5. REMOVE WATER INLET AND THERMOSTAT
(See page CO±11)
6. REMOVE WATER PUMP
(a) Loosen the nut and remove the bolt, slide the generator
away from the water pump.
(b) Remove the bolt, and disconnect the clamp bracket (for
engine wire).
(c) Remove the bolt, and disconnect the connector bracket
(for crankshaft position sensor connector).
(d) Remove the 2 nuts, and disconnect the No.2 water by-
pass pipe from the water pump.

A02656
A02671
Timing MarkSub Timing Mark
60°
Turn
A02660
Dot
Mark
30°Timing
MarkDot
Mark
30°Timing
Mark
A02653
± ENGINE MECHANICAL (2JZ±GE)TIMING BELT
EM±17
1371 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
10. SET NO.1 CYLINDER TO APPROX. 60°/ BTDC COM-
PRESSION
(a) Turn the crankshaft pulley, and align its groove with timing
mark º0º of the No.1 timing belt cover.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that the timing marks (TDC mark) of the camshaft
timing pulleys are aligned with the timing marks of the
No.4 timing belt cover.
If not, turn the crankshaft 1 revolution (360°).
(c) Turn the crankshaft pulley 60° counterclockwise to place
the sub timing mark (60° mark BTDC) on the crankshaft
pulley at the timing mark º0º position of the No.1 timing
belt cover.
NOTICE:
If the timing belt is disengaged, having the crankshaft
pulley at the wrong angle can cause the piston head and
valve head to come into contact with each other when you
remove the camshaft timing pulleys (steps 11 to 17), thus
resulting damage. So, always set the crankshaft pulley at
the correct angle.
(d) Check that the dot marks (60° mark BTDC) of the cam-
shaft timing pulleys are aligned with the timing marks of
the No.4 timing belt cover.
(e) Remove the crankshaft pulley bolt.
NOTICE:
Do not turn the crankshaft pulley.
11. REMOVE TIMING BELT FROM CAMSHAFT TIMING
PULLEYS
HINT:
(Re±using timing belt):
Place matchmarks on the timing belt and camshaft timing pul-
leys as shown in the illustration.

P10918
A02646
A02645
Turn
A02656
A02691
SST
± ENGINE MECHANICAL (2JZ±GE)TIMING BELT
EM±27
1381 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
16. INSTALL TIMING BELT TENSIONER
(a) Temporarily install the tensioner with the 2 bolts.
(b) Alternately tighten the 2 bolts.
Torque: 27 N´m (270 kgf´cm, 20 ft´lbf)
(c) Remove the 1.5 mm hexagon wrench from the tensioner
with pliers.
17. CHECK VALVE TIMING
(a) Slowly turn the crankshaft pulley 2 revolutions from TDC
to TDC.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that each pulley aligns with the timing marks as
shown in the illustration.
If the marks do not align, remove the timing belt and reinstall it.
18. TIGHTEN CRANKSHAFT PULLEY BOLT
Using SST, install the pulley bolt.
SST 09213±70010, 09330±00021
Torque: 330 N´m (3,300 kgf´cm, 243 ft´lbf)
19. INSTALL DRIVE BELT TENSIONER
Install the tensioner with the 3 bolts.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
NOTICE:
Be careful not to drop the bolts inside the timing belt cover.

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.

EM0DO±03
A09756

Before installing oxygen sensor, twist
sensor wire counterclockwise 3 and 1/2
turns.

After installing oxygen sensor, check that
sensor wire is not twisted. If it is twisted,
remove oxygen sensor and reinstall it.HINT:
Ring
RingRing BracketHeat Insulator
RH Tailpipe


Heat
Insulator

 
RingBracketRing Tailpipe
Baffle Gasket
Center Exhaust PIpe
 Gasket
Ring
Heat Insulator
LH Tailpipe
Tailpipe
Baffle
44 (440, 32)
44 (440, 32)
Front Floor
Center Brace
Heated Oxygen Sensor
Heated Oxygen Sensor
(Bank 2 Sensor 2)
Heat InsulatorHeat Insulator
45 (450, 33)
44 (440, 32)
 Gasket
N´m (kgf´cm, ft´lbf) : Specified torque
 Non±reusable partPipe Support Bracket
Front Exhaust Pipe
 Gasket Heat
Insulator
44 (440, 32)
± ENGINE MECHANICAL (2JZ±GE)EXHAUST SYSTEM
EM±97
1451 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EXHAUST SYSTEM
COMPONENTS

IN0EI±01
BO4111
Negative Cable
IN±10
± INTRODUCTIONFOR ALL OF VEHICLES
10 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FOR ALL OF VEHICLES
PRECAUTION
1. FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND
SEAT BELT PRETENSIONER
(a) The LEXUS GS400/GS300 is equipped with an SRS
(Supplemental Restraint System), such as the driver air-
bag, front passenger airbag assembly, side airbag as-
sembly and seat belt pretensioners.
Failure to carry out service operations in the correct se-
quence could cause the supplemental restraint system to
unexpectedly deploy during servicing, possibly leading to
a serious accident.
Further, if a mistake is made in servicing the supplemental
restraint system, it is possible the SRS may fail to operate
when required. Before servicing (including removal or
installation of parts, inspection or replacement), be sure
to read the following items carefully, then follow the cor-
rect procedure described in this manual.
(b) GENERAL NOTICE
(1) Malfunction symptoms of the supplemental re-
straint system are difficult to confirm, so the diag-
nostic trouble codes become the most important
source of information when troubleshooting. When
troubleshooting the supplemental restraint system,
always inspect the diagnostic trouble codes before
disconnecting the battery (See page DI±552).
(2) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (±) terminal cable is discon-
nected from the battery.
(The supplemental restraint system is equipped
with a back±up power source so that if work is
started within 90 seconds of disconnecting the neg-
ative (±) terminal cable from the battery, the SRS
may deploy.)
When the negative (±) terminal cable is discon-
nected from the battery, memory of the clock and
audio systems will be cancelled. So before starting
work, make a record of the contents memorized by
the each memory system. Then when work is fin-
ished, reset the clock and audio systems as before.
This vehicle has power tilt and power telescopic
steering, power seat and power outside rear view
mirror, which are all equipped with memory function,
it is not possible to make a record of the memory
contents. So when the work is finished, therefore it
will be necessary to explain this fact to the custom-
er, and ask the customer to adjust the features and

Z10210
SST
± PROPELLER SHAFTPROPELLER SHAFT ASSEMBLY
PR±11
1998 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(i) Using SST, tighten the adjusting nut.
SST 09922±10010
Torque: 50 N´m (515 kgf´cm, 37 ft´lbf)
HINT:
Use a torque wrench with a fulcrum length of 34.5 cm (13.6 in.).
2. INSPECT JOINT ANGLE (See page PR±12)
NOTICE:
The joint angle should by all means be checked when the
propeller shaft is removed and installed.
3. INSTALL 2 HEAT INSULATORS
(a) Install the heat insulator and torque the 4 bolts.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(b) Install the heat insulator and torque the 6 bolts.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
4. INSTALL EXHAUST PIPE ASSEMBLY
(a) Connect the exhaust pipe assembly to the O±rings.
(b) 2JZ±GE Engine:
Install the 3 bolts, nuts and 2 gaskets to the exhaust man-
ifold. Torque the bolts.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
(c) 1UZ±FE Engine:
Install the 4 bolts, nuts and 2 gaskets to the exhaust man-
ifold. Torque the bolts.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
(d) Install the front floor center brace and torque the 2 bolts.
Torque: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
(e) Connect the heated oxygen sensor.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
HINT:

Before installing the oxygen sensor, twist the sensor wire
counterclockwise 3 and 1/2 turns.

After installing oxygen sensor, check that the sensor wire
should not twist. If it is twisted, remove the oxygen sensor
and reinstall it.

SF0ND±04
B01220
New Insulator
New O±Ring
New Grommet New O±Ring
B01571
Turn
Outward
Connector
B01580
RotateUpward SF±24
± SFI (2JZ±GE)INJECTOR
1490 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL INJECTORS AND DELIVERY PIPE
(a) Install new insulator and grommet to each injector.
(b) Apply a light coat of spindle oil or gasoline to 2 new O±
rings and install them to each injector.
(c) Apply a light coat of spindle oil or gasoline on the place
where a delivery pipe touches an O±ring of the injector.
(d) While turning the injector clockwise and counterclock-
wise, push it to the delivery pipe. Install the 6 injectors.
(e) Position the injector connector outward.
(f) Place the 3 spacers in position on the intake manifold.
(g) Apply a light coat of spindle oil or gasoline on the place
where a intake manifold touches an O±ring of the injector.
(h) Place the 6 injectors together with the delivery pipe and
3 bolts in position on the intake manifold.
(i) Temporarily install the 3 bolts holding the delivery pipe to
the intake manifold.
(j) Check that the injectors rotate smoothly.
HINT:
If injectors do not rotate smoothly, the probable cause is incor-
rect installation of O±rings. Replace the O±rings.
(k) Position the injector connector upward.
(l) Connect the 6 injector connectors.
HINT:
The Nos.1, 3, 5 injector connectors and dark gray, and the
Nos.2, 4, 6 injector connectors are brown.
(m) Tighten the 3 bolts holding the delivery pipe to the intake
manifold.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(n) Connect the camshaft position sensor connector.
(o) Connect the throttle position sensor connector.
(p) Connect the VSV connector for EVAP.
2. INSTALL FUEL PRESSURE PULSATION DAMPER
(See page SF±27)
3. INSTALL AIR INTAKE CHAMBER
(See page SF±49)
4. INSTALL ENGINE COVER
Install the engine cover with the 4 nuts.