2000 LEXUS GS400 width

EM2534
Overall
Length
EM0255
A02709
45° Carbide Cutter
Z00373
Width
P03966
Width 45°
15°
± ENGINE MECHANICAL (2JZ±GE)CYLINDER HEAD
EM±43
1397 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Check the valve overall length.
Standard overall length:
Intake98.29 ± 98.79 mm (3.8697 ± 3.8894 in.)
Exhaust98.84 ± 99.34 mm (3.8913 ± 3.9110 in.)
Minimum overall length:
Intake98.19 mm (3.8657 in.)
Exhaust98.74 mm (3.8874 in.)
If the overall length is less than minimum, replace the valve.
(e) Check the surface of the valve stem tip for wear.
If the valve stem tip is worn, resurface the tip with a grinder or
replace the valve.
NOTICE:
Do not grind off more than the minimum overall length.
7. INSPECT AND CLEAN VALVE SEATS
(a) Using a 45° carbide cutter, resurface the valve seats.
Remove only enough metal to clean the seats.
(b) Check the valve seating position.
Apply a thin coat of Prussian blue (or white lead) to the
valve face. Lightly press the valve against the seat. Do not
rotate the valve.
(c) Check the valve face and seat for the following:

If blue appears 360° around the face, the valve is
concentric. If not, replace the valve.

If blue appears 360° around the valve seat, the
guide and face are concentric. If not, resurface the
seat.

Check that the seat contact is in the middle of the
valve face with the following width:
If not, correct the valve seats as follows:
Intake1.0 ± 1.4 mm (0.039 ± 0.055 in.)
Exhaust1.2 ± 1.6 mm (0.047 ± 0.063 in.)
(1) If the seating is too high on the valve face, use 15°
and 45° cutters to correct the seat.

Z02456Width 75°
45°
A02710
Z02457
Deviation
EM0801
EM0281
EM±44
± ENGINE MECHANICAL (2JZ±GE)CYLINDER HEAD
1398 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(2) If the seating is too low on the valve face, use 75°
and 45° cutters to correct the seat.
(d) Hand±lap the valve and valve seat with an abrasive com-
pound.
(e) After hand±lapping, clean the valve and valve seat.
8. INSPECT VALVE SPRINGS
(a) Using a steel square, measure the deviation of the valve
spring.
Maximum deviation: 2.0 mm (0.079 in.)
If deviation is greater than maximum, replace the valve spring.
(b) Using vernier calipers, measure the free length of the
valve spring.
Free length:
Pink painted mark43.71 mm (1.7209 in.)
Yellow painted mark44.10 mm (1.7362 in.)
If the free length is not as specified, replace the valve spring.
(c) Using a spring tester, measure the tension of the valve
spring at the specified installed length.
Installed tension:
186.2 ± 205.8 N (19.0 ± 21.0 kgf, 41.9 ± 46.3 lbf)
at 34.5 mm (1.358 in.)
If the installed tension is not as specified, replace the valve
spring.

EM0DE±03
P02185
Adhesive Width
2 ± 3 mm
Adhesive
10 mm
Z08040
Protrusion
A02704
A02686
(e) (d) (c) (b)
EM±50
± ENGINE MECHANICAL (2JZ±GE)CYLINDER HEAD
1404 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REASSEMBLY
HINT:

Thoroughly clean all parts to be assembled.

Before installing the parts, apply fresh engine oil to all slid-
ing and rotating surfaces.

Replace all gaskets and oil seals with new ones.
1. INSTALL HEATER UNION
HINT:
When using a new cylinder head, a new heater union must be
installed.
(a) Apply adhesive to the end of the heater union as shown
in the illustration.
Adhesive: Part No.08833±00070, THREE BOND 1324
or equivalent
(b) Using a wooden block and hammer, tap in a new heater
union, leaving 48 mm (1.89 in.) protruding from the cylin-
der head.
NOTICE:
Do not tap it in too far.
2. INSTALL VALVES
(a) Install a new oil seal on the valve guide bushing.
(b) Install the valve.
(c) Install the spring seat.
(d) Install the valve spring.
(e) Install the spring retainer.

A02700
A02701
Front
Z17798
2 mm
Seal Width
1 ± 2 mm2 ± 3 mmSeal PackingNo.1
No.3Seal Packing
2 ± 3 mm
S03018
148
1226104
3
4
3 9
5
7
1
11
13
14
1312
112
18
76
510
9
± ENGINE MECHANICAL (2JZ±GE)CYLINDER HEAD
EM±53
1407 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Place the (Nos. 3, 7 journal) camshaft bearing caps in
their proper location.
(d) Apply a light coat of engine oil on the threads and under
the heads of the bearing cap bolts.
(e) Temporarily tighten these bearing cap bolts uniformly and
alternately, in several passes, until the bearing caps are
snug with the cylinder head.
(f) Apply MP grease to a new camshaft oil seal lip.
(g) Install the 2 oil seals to the camshafts.
(h) Clean the installed surfaces of the Nos.1, 3 camshaft
bearing cap and cylinder head with cleaner.
(i) Apply seal packing to the bearing caps as shown.
Seal packing: Part No. 08826±00080 or equivalent
(j) Install the other bearing caps in their proper locations.
(k) Apply a light coat of engine oil on the threads and under
the heads of the bearing cap bolts.
(l) Install and uniformly tighten the 14 bearing cap bolts on
one side, in several passes, in the sequence shown.
Torque: 20 N´m (200 kgf´cm, 15 ft´lbf)
(m) Using a 5 mm hexagon wrench, the 2 No.3 camshaft
bearing cap bolts.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)

P02139
P04797
No.1Others
23.0 mm20.0 mm
A02723
P02671
A02754
EM±92
± ENGINE MECHANICAL (2JZ±GE)CYLINDER BLOCK
1446 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. INSTALL BEARINGS
(a) Align the bearing claw with the groove of the connecting
rod and connecting cap.
(b) Install the bearings in the connecting rod and connecting
rod cap.
4. INSTALL MAIN BEARINGS
HINT:

Main bearings come in widths of 20.0 mm (0.787 in.) and
23.0 mm (0.906 in.). Install the 23.0 mm bearings in the
No.1 cylinder block journal position with the main bearing
cap. Install the 20.0 mm bearings in the other positions.

Upper bearings have an oil groove and oil holes; lower
bearings do not.
(a) Align the bearing claw with the claw groove of the main
bearing cap or cylinder block.
NOTICE:
Install the bearing with the oil hole in the cylinder block.
(b) Install the bearings in the cylinder block and main bearing
caps.
5. INSTALL UPPER THRUST WASHERS
Install the 2 thrust washers under the No.4 main journal position
of the cylinder block with the oil grooves facing outward.
6. PLACE CRANKSHAFT ON CYLINDER BLOCK

P02420
Painted Mark
90°90°
P02197
Seal Width
2 ± 3 mm
Seal
Packing
± ENGINE MECHANICAL (2JZ±GE)CYLINDER BLOCK
EM±95
1449 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Mark the front of the connecting rod cap bolt with paint.
(d) Retighten the connecting rod cap bolts 90° in the numeri-
cal order shown.
(e) Check that the painted mark is now at a 90° angle to the
front.
(f) Check that the crankshaft turns smoothly.
13. CHECK CONNECTING ROD THRUST CLEARANCE
(See page EM±76)
14. INSTALL REAR OIL SEAL RETAINER
(a) Remove any old packing (FIPG) material and be careful
not to drop any oil on the contact surfaces of the retainer
and cylinder block.

Using a razor blade and gasket scraper, remove all
the old packing (FIPG) material from the gasket sur-
faces and sealing groove.

Thoroughly clean all components to remove all de-
bris.

Using a non±residue solvent, clean both sealing
surfaces.
(b) Apply seal packing to the retainer as shown in the illustra-
tion.
Seal packing: Part No.08826±00080 or equivalent

Install a nozzle that has been cut to a 2 ± 3 mm (0.08
± 0.12 in.) opening.

Parts must be assembled within 3 minutes of ap-
plication. Otherwise the material must be removed
and reapplied.

Immediately remove nozzle from the tube and rein-
stall cap.
(c) Install the retainer with the 6 bolts.
Torque: 6.0 N´m (60 kgf´cm, 53 in.´lbf)
15. INSTALL OIL PUMP (See page LU±12)
16. INSTALL RH ENGINE MOUNTING BRACKET AND
INSULATOR ASSEMBLY
Install the mounting bracket with the 4 bolts.
Torque: 59 N´m (590 kgf´cm, 44 ft´lbf)
17. INSTALL LH ENGINE MOUNTING BRACKET AND
INSULATOR ASSEMBLY
Install the mounting bracket with the 4 bolts.
Torque: 59 N´m (590 kgf´cm, 44 ft´lbf)
18. INSTALL FUEL INLET PIPE
Install the fuel inlet pipe with the 2 bolts.
Torque: 29 N´m (290 kgf´cm, 21 ft´lbf)
19. INSTALL NO.1 OIL PIPE
Install the No.1 oil pipe with 2 new gaskets and the union bolt.
Torque: 55 N´m (550 kgf´cm, 41 ft´lbf)

IN±38
± INTRODUCTIONTERMS
38 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) H±FUSE
High Current Fuse
HIHigh
HIDHigh Intensity Discharge (Head Lamp)
HSGHousing
HTHard Top
HWSHeated Windshield System
IACIdle Air Control
ICIntegrated circuit
IDIIndirect Diesel Injection
IFSIndependent Front Suspension
IGIgnition
IIAIntegrated Ignition Assembly
INIntake (Manifold, Valve)
INTIntermittent
I/PInstrument Panel
IRSIndependent Rear Suspension
J/BJunction Block
J/CJunction Connector
KDKick±Down
LANLocal Area Network
LBLiftback
LCDLiquid Crystal Display
LEDLight Emitting Diode
LHLeft±Hand
LHDLeft±Hand Drive
L/H/WLength, Height, Width
LLCLong±Life Coolant
LNGLiquified Natural Gas
LOLow
LPGLiquified Petroleum Gas
LSDLimited Slip Differential
LSP & PVLoad Sensing Proportioning And Bypass Valve
LSPVLoad Sensing Proportioning Valve
MAX.Maximum
MICMicrophone
MILMalfunction Indicator Lamp
MIN.Minimum
MPMultipurpose
MPXMultiplex Communication System
M/TManual Transmission
MTMount
MTGMounting
NNeutral
NANatural Aspiration
No.Number
O/DOverdrive

LU05O±03
P03946
New O±Ring
Z02385
Seal Width
2 ± 3 mmA
B
A
B
P03936
Long
Bolt LU±12
± LUBRICATION (2JZ±GE)OIL PUMP
1584 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
1. INSTALL OIL PUMP
(a) Place 2 new O±rings in position on the cylinder block.
(b) Remove any old packing (FIPG) material and be careful
not to drop any oil on the contact surfaces of the oil pump
and cylinder block.

Using a razor blade gasket scraper, remove all the
old packing (FIPG) material from the gasket
surfaces and sealing groove.

Thoroughly clean all components to remove all the
debris.

Using a non±residue solvent, clean both sealing
surfaces.
NOTICE:
Do not use a solvent which will affect the painted surfaces.
(c) Apply seal packing to the oil pump as shown in the illustra-
tion.
Seal packing: Part No.08826±00080 or equivalent

Install a nozzle that has been cut to a 2 ± 3 mm (0.08
± 0.12 in.) opening.
HINT:
Avoid applying an excessive amount to the surface. Be particu-
larly careful near oil passages.

Parts must be assembled within 5 minutes of ap-
plication. Otherwise the material must be removed
and reapplied.

Immediately remove nozzle from the tube and rein-
stall cap.
(d) Install the oil pump with the 9 bolts.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)