Lexus ES300 (1997 year). Service manual — part 462
Z19041
Adjusting Shim
Valve Lifter
Keeper
Spring Retainer
Valve Spring
Spring Seat
Oil Seal
Valve
Valve Guide Bushing
LH Cylinder Head Cover
Gasket
Wave Washer
Camshaft Gear
Spring
Spark Plug
Tube Gasket
LH Intake Camshaft
Snap Ring
Camshaft
Sub–Gear
LH Exhaust Camshaft
RH Cylinder Head Cover
Gasket
RH Intake Camshaft
Camshaft Sub–Gear
Snap Ring
Camshaft Gear Spring
RH Exhaust
Camshaft
Wave Washer
Semi–Circular Plug
Semi–Circular
Plug
LH Cylinder Head
Camshaft
Bearing cap
Camshaft Oil Seal
RH Cylinder
Head
RH Cylinder
Head Gasket
LH Cylinder Head
Gasket
18 (185, 13)
x8
16 (160, 12)
See Page
2nd Turn 90
°
N·m (kgf·cm, ft·lbf)
: Specified torque
Non–reusable part
–
ENGINE MECHANICAL
CYLINDER HEAD
EM–29
766
1997 LEXUS ES300 (RM511U)
EM043–02
S05625
5 mm
Hexagon
Wrench
Clip
S05034
(2)
(1)
(3)
S05049
(6)
(4)
(9)
(7)
(5)
(8)
EM–30
–
ENGINE MECHANICAL
CYLINDER HEAD
767
1997 LEXUS ES300 (RM511U)
REMOVAL
1.
REMOVE ENGINE RH FENDER APRON SEAL
2.
DRAIN ENGINE COOLANT
3.
REMOVE AIR CLEANER CAP ASSEMBLY AND AIR
FILTER
4.
REMOVE FRONT EXHAUST PIPE
(See page
5.
REMOVE RH ENGINE MOUNTING STAY
6.
REMOVE V–BANK COVER
(a)
Using a 5 mm hexagon wrench, remove the 2 nuts.
(b)
Disconnect the 2 clips, and remove the cover.
7.
REMOVE HIGH–TENSION CORD SET
(See page
8.
REMOVE AIR INTAKE CHAMBER ASSEMBLY
(a)
Disconnect these cables and connectors:
Accelerator cable
A/T throttle cable
Throttle position sensor connector
IAC valve connector
EGR gas temperature sensor connector
EGR valve position sensor connector
VSV connector for ACIS
VSV connector for EVAP
VSV connector for EGR
DLC1 from bracket on intake air control valve
(b)
Remove the 2 nuts, and disconnect the PS pressure tube
from the No.1 engine hanger.
(c)
Disconnect the hoses, cables, strap and clamp:
(1)
PCV hose from PCV valve on RH cylinder head
(2)
Ground strap and cable from intake air control valve
for ACIS
(3)
Ground cable from air intake chamber
(4)
Brake booster vacuum hose from air intake
chamber
(5)
2 water bypass hoses from throttle body
(6)
Air assist hose from throttle body
(7)
EVAP hose from pipe on emission control valve set
(8)
2 vacuum hoses from vacuum tank for ACIS
(9)
Engine wire clamp from emission control valve set
S04790
Chamber Stay
EGR
Pipe
Engine
Hanger
S04791
8 mm Hexagon
Wrench
S04788
(2)
(1)
S04580
P20049
Gasket
–
ENGINE MECHANICAL
CYLINDER HEAD
EM–31
768
1997 LEXUS ES300 (RM511U)
(d)
Remove the 2 bolts and No.1 engine hanger.
(e)
Remove the 2 bolts and air intake chamber stay.
(f)
Remove the 4 nuts, No.2 EGR pipe and 2 gaskets.
(g)
Using an 8 mm hexagon wrench, remove the 2 bolts, 2
nuts, the air intake chamber assembly and gasket.
9.
REMOVE INTAKE MANIFOLD ASSEMBLY
(a)
Disconnect the 6 injector connectors.
(b)
Disconnect these hoses:
(1)
Fuel inlet hose from fuel filter
CAUTION:
Perform disconnecting operations of the fuel tube connec-
tor (quick type) after observing the precaution.
(See page
(2)
Heater hose from intake manifold
(c)
Remove the 9 bolts, 2 nuts, 2 plate washers, the intake
manifold, delivery pipes and injectors assembly.
10.
REMOVE WATER OUTLET
(a)
Disconnect these connectors, (strap) and hoses:
ECT sender gauge connector
ECT sensor connector
Ground strap (connector)
Radiator hose
Engine coolant reservoir hose
(b)
Remove the 2 bolts, 2 nuts and 2 plate washers.
P18772
Clamp
Clamp
Clamp
S04786
S04787
P18767
EM–32
–
ENGINE MECHANICAL
CYLINDER HEAD
769
1997 LEXUS ES300 (RM511U)
(c)
Disconnect the water bypass hose, and remove the water
outlet.
(d)
Remove the 2 gaskets.
11.
REMOVE GENERATOR DRIVE BELT
(See page
12.
REMOVE PS PUMP
(See page
13.
REMOVE IGNITION COILS
14.
REMOVE SPARK PLUGS
15.
REMOVE TIMING BELT
(See page
16.
REMOVE CAMSHAFT TIMING PULLEYS
(See page
17.
REMOVE NO.2 IDLER PULLEY
(See page
18.
REMOVE NO.3 TIMING BELT COVER
(a)
Disconnect the 3 engine wire clamps from the timing belt
cover.
(b)
Remove the 6 bolts and timing belt cover.
19.
DISCONNECT ENGINE WIRE PROTECTOR FROM
REAR SIDE
Remove the 2 nuts, and disconnect the engine wire protector
from the RH cylinder head and water inlet.
20.
DISCONNECT ENGINE WIRE AND PROTECTOR
FROM RH SIDE
Remove the 5 nuts, and disconnect the engine wire and protec-
tor from the RH cylinder head cover.
21.
DISCONNECT ENGINE WIRE PROTECTOR FROM LH
SIDE
Remove the 2 bolts, and disconnect the engine wire protector
from the LH cylinder head cover.
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