Lexus GS300/400 (2000 year). Service manual - part 143

A02735

A09752

A11121

Case Clamp

New Clamp

A02819

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

EM–57

1411

15.

INSTALL VACUUM CONTROL VALVE SET AND NO.2
VACUUM PIPE

(a)

Install the vacuum control valve set and No.2 vacuum
pipe with the 3 nuts.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)

(b)

Install the engine wire clamp to the clamp bracket of the
No.2 vacuum pipe.

(c)

Connect the VSV connector for the ACIS.

16.

INSTALL AIR INTAKE CHAMBER (See page 

SF–49

)

17.

INSTALL OIL DIPSTICK AND GUIDE FOR A/T
 (See page 

EM–68

)

18.

INSTALL OIL DIPSTICK AND GUIDE FOR ENGINE
(See page 

LU–12

)

19.

INSTALL THROTTLE BODY AND INTAKE AIR
CONNECTOR ASSEMBLY (See page 

EM–5

)

20.

INSTALL WATER BYPASS OUTLET AND NO.1 WATER
BYPASS PIPE (See page 

CO–13

)

21.

INSTALL EXHAUST MANIFOLD

(a)

Install 2 new gaskets to the cylinder head.

(b)

Using a 14 mm deep socket wrench,  install the exhaust
manifold with the 8 nuts. Uniformly tighten the nuts in sev-
eral passes.
Torque: 40 N·m (408 kgf·cm, 30 ft·lbf)

(c)

Connect the 3 heated oxygen sensor connectors and
clamp.

(d)

Install a new clamp and the case clamp as shown in the
illustration.

22.

CONNECT FRONT EXHAUST PIPE TO EXHAUST
MANIFOLD

(a)

Temporarily install the pipe support bracket to the trans-
mission with the 2 bolts.

(b)

Install 2 new gaskets to front end of the front exhaust pipe,
and connect the front exhaust pipe to the exhaust man-
ifold with the 3 bolts and nuts.
Torque: 44 N·m (440 kgf·cm, 32 ft·lbf)

(c)

Tighten the 2 bolts holding the pipe support bracket to the
transmission.

B01935

Wire
Grommet

Clamp

A02802

EM–58

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

1412

Torque: 44 N·m (440 kgf·cm, 32 ft·lbf)

(d)

Connect the wire grommet and sensor wire of the the
heated oxygen sensor (bank 2 sensor 2) to the hole and
clamp on the floor.

23.

INSTALL PS PUMP

(a)

Install the vane pump with the 2 bolts.
Torque: 58 N·m (590 kgf·cm, 43 ft·lbf)

(b)

Install the pump rear stay with the 2 bolts.
Torque: 39.2 N·m (400 kgf·cm, 29 ft·lbf)

(c)

Connect the PS air hose to the No.4 timing belt cover.

(d)

Connect the PS air hose to the air intake chamber.

24.

INSTALL DRIVE BELT (See page 

CH–1

)

25.

INSTALL AIR CLEANER, MAF METER AND INTAKE
AIR RESONATOR ASSEMBLY (See page 

EM–68

)

26.

INSTALL AIR CLEANER INLET

27.

CONNECT UPPER RADIATOR HOSE TO WATER OUT-
LET

28.

INSTALL ENGINE COVER

Install the engine cover with the 4 nuts.
29.

FILL WITH ENGINE COOLANT

30.

START ENGINE AND CHECK FOR LEAKS

31.

INSTALL ENGINE UNDER COVER

32.

ROAD TEST

Check for abnormal noise, shock, slippage, correct shift points
and smooth operation.
33.

RECHECK ENGINE COOLANT LEVEL

EM0DG–03

A09759

Air Cleaner, 
MAF Meter and
Intake Air Resonator 
Assembly

PCV Hose

Hood Support

Hood

MAF Meter 
Connector

Engine Wire
Clamp

Washer Hose

Accelerator Cable

PS Air Hose

EVAP Hose

Air Cleaner Inlet

Radiator Lower Hose

Engine Under Cover

Front Suspension
Member Brace

x 6

x 18

Radiator Upper Hose

Upper Radiator

Drive Belt

ECM Outlet Duct

ECT Switch Connector

Connector

Radiator Assembly

Radiator Lower Support

Oil Cooler Hose for A/T

EVAP Hose

Heater 
Hose

Support

Electric Cooling Fan

Engine Cover

–

ENGINE MECHANICAL (2JZ–GE)

ENGINE UNIT

EM–59

1413

ENGINE UNIT

COMPONENTS

A09753

Transmission Control Rod

13 (130, 9)

13 (130, 9)

Rear Engine Mounting Member

Fuel Inlet



 Gasket

29 (300, 22)

13.5 (135, 10)

25.5 (260, 19)

70 (714, 52)

Hole Plug

PS Vane Pump Assembly

PS Pump Rear Stay

57.9 (590, 43)

39.2 (400, 29)

65 (660, 48)

65 (660, 48)

35 (360, 26)

26 (265, 19)

52 (530, 38)

57.9 (590, 43)

A/C Compressor

52 (530, 38)

52 (530, 38)

Adjusting Washer

PS Gear Housing

Propeller Shaft

79 (805, 58)

37 (375, 27)

Heat Insulator

Heat Insulator

Adjusting Nut

69 (700, 51)

79 (805, 58)

44 (440, 32)



 Gasket



 Gasket

Ring

Ring

Center Exhaust Pipe

Front Floor Center Brace



 Gasket

Front Exhaust Pipe 
(with Rear TWC)

44 (440, 32)



 Gasket

45 (450, 32)

Heated Oxygen Sensor
(Bank 2 Sensor 2)

44 (440, 32)

N·m (kgf·cm, ft·lbf) : Specified torque



 Non–reusable part

44 (440, 32)

Pipe Support
Bracket

Hose

EM–60

–

ENGINE MECHANICAL (2JZ–GE)

ENGINE UNIT

1414