head LEXUS LS430 2003 Factory Service Manual

Fig. 19: Applying Battery Positive Voltage Across Terminals
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3.INSPECT VENTILATION VALVE SUB-ASSY
a. Install a clean hose to the ventilation valve.
b. Inspect ventilation valve operation.
1. Blow air from the cylinder head side of the engine, and check that air passes through easily.

Fig. 22: Removing Bolts And Disconnecting Engine Wire Protector
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k. Disconnect the 2 wire clamps on the engine wire (RH side) from the brackets on the RH delivery
pipe.
l. Remove the 2 bolts, and disconnect the engine wire protector (rear side) from the rear water bypass
joint and RH cylinder head.
m. Disconnect the 8 injector connectors.
Fig. 23: Identifying Bolts

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n. Remove the 6 bolts, 4 nuts, the upper and lower intake manifolds assembly and 2 gaskets.
8.REMOVE KNOCK SENSOR

Fig. 26: Installing Intake Manifold Assy
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a. Place 2 new gaskets on the cylinder heads with the white mark facing outward.
b. Install the upper and lower intake manifolds assembly with the 6 bolts and 4 nuts.

Fig. 49: Removing Outer Rear View Mirror Assy LH
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8.REMOVE FRONT DOOR ECU
a. Disconnect the connector.
b. Remove the 2 screws and ECU.
9.REMOVE FRONT NO.1 SPEAKER ASSY (See REPLACEMENT
)
10.REMOVE FRONT DOOR BELT MOULDING ASSY LH (See REPLACEMENT
)
11.REMOVE FRONT DOOR WINDOW FRAME MOULDING REAR LH (See REPLACEMENT
)
12.REMOVE FRONT DOOR WINDOW FRAME MOULDING FRONT LH (See REPLACEMENT
)
13.REMOVE FRONT DOOR GLASS RUN LH
a. Using a drill of less than +/- 4 mm (0.16 in.), drill out the heads of the 5 rivets and remove the glass
run.

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580045[-Assy LH
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15.REMOVE REAR DOOR GLASS RUN LH
a. Using a drill of less than +/- 4 mm (0.16 in.), drill out the heads of the 3 rivets and remove the glass
run.
b. Even if the flange is taken off, continue drilling and push out the remaining fragments using the
drill.
c. Using a vacuum cleaner, remove the drilled rivet and dust from the inside of the door.

Fig. 10: Locating Mark
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4.INSTALL AIR CLEANER INLET NO.1
ADJUSTMENT
1.REMOVE V-BANK COVER
2.REMOVE CYLINDER HEAD COVER SUB-ASSY (See REPLACEMENT
)
3.REMOVE CYLINDER HEAD COVER SUB-ASSY LH (See REPLACEMENT
)
4.SET NO. 1 CYLINDER TO TDC/COMPRESSION
a. Turn the crankshaft damper, and align its groove with timing mark "0" of the timing belt No. 1
cover.

Fig. 18: Adjusting Shim Selection Chart (Exhaust)
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9.INSTALL NO.3 CAMSHAFT SUB-ASSY (See REPLACEMENT
)
10.INSTALL CAMSHAFT (See REPLACEMENT
)
11.INSTALL CYLINDER HEAD COVER SUB-ASSY LH (See REPLACEMENT
)
12.INSTALL CYLINDER HEAD COVER SUB-ASSY (See REPLACEMENT
)
13.INSTALL V-BANK COVER
COMPONENTS

a. Check the steering wheel at the straight-ahead position.
b. Remove the 2 bolts and sliding yoke from the steering intermediate shaft.
Fig. 34: Removing Bolts And Sliding Yoke

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33.REMOVE FRONT DISC BRAKE CYLINDER ASSY RH (See OVERHAUL
)
34.REMOVE DISC BRAKE CYLINDER ASSY LH (See OVERHAUL
)
35.REMOVE FRONT SUSPENSION UPPER ARM ASSY RH (See REPLACEMENT
)
36.REMOVE FRONT SUSPENSION UPPER ARM ASSY LH (See REPLACEMENT
)
37.REMOVE PNEUMATIC FRONT RH W/ SHOCK ABSORBER CYLINDER ASSY (See
REPLACEMENT
)
38.REMOVE PNEUMATIC FRONT LH W/ SHOCK ABSORBER CYLINDER ASSY (See
REPLACEMENT
)
39.REMOVE HEIGHT CONTROL SENSOR LINK SUB-ASSY FRONT (See REPLACEMENT
)
40.REMOVE STABILIZER BRACKET FRONT (See REPLACEMENT
)
41.DISCONNECT POWER STEERING GEAR HOUSING ASSY
a. Remove the bolt, and disconnect the 2 PS oil tubes from the front frame.
b. Remove the 4 bolts, and disconnect the PS gear housing from the front frame.

Fig. 41: Identifying VSV Connector For ACIS
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i. Remove the 4 bolts, and disconnect the engine wire protector (LH side) from the upper intake
manifold and camshaft bearing cap.
j. Disconnect the 2 wire clamps on the engine wire (RH side) from the brackets on the RH delivery
pipe.
k. Remove the 2 bolts, and disconnect the engine wire protector (rear side) from the rear water bypass
joint and RH cylinder head.

Fig. 42: Disconnecting Engine Wire Protector (LH Side) From Upper Intake Manifold
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l. Disconnect the 8 injector connectors.
m. Remove the 6 bolts, 4 nuts, intake manifold assy and 2 gaskets.
Fig. 43: Identifying Bolts

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52.INSPECT INTAKE MANIFOLD ASSY
a. Upper intake manifold:
Using a precision straight edge and feeler gauge, measure the surface contacting the cylinder head
for warpage.
Maximum warpage: 0.15 mm (0.0059 in.)