LEXUS LS430 2003 Factory Repair Manual

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55[
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4. Uniformly loosen the 22 bearing cap bolts in several passes in the sequence shown in the
illustration.
5. Remove the 22 bearing cap bolts, 4 seal washers, oil feed pipe, 9 bearing caps, camshaft housing
plug, oil control valve filter and 2 camshafts.
25.REMOVE NO.3 CAMSHAFT SUB-ASSY

Fig. 101: Removing Bearing Cap Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
a. Remove the camshafts of the LH bank.
1. Boring the service bolt hole of the sub gear upward by turning the hexagon wrench head portion of
the No. 4 camshaft with a wrench.
2. Secure the sub
gear to the main gear with a service bolt.

Fig. 102: Removing Camshafts Of LH Bank
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
RECOMMENDED SERVICE BOLT:
RECOMMENDED SERVICE BOLT
HINT:
When removing the camshaft, make sure that the torsional spring force of the sub gear has been
eliminated by the above operation.
3. Align the timing mark (2 dot marks) of the camshaft drive gear by turning the hexagon wrench
head portion of the No. 4 camshaft with a wrench.
Thread diameter6 mm
Thread pitch1.0 mm
Bolt length16 to 20 mm (0.63 to 0.79 in.)

Fig. 103: Aligning Timing Mark Of Camshaft Drive Gear
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4. Uniformly loosen the 22 bearing cap bolts in several passes in the sequence shown in the
illustration.
5. Remove the 22 bearing cap bolts, 4 seal washers, oil feed pipe, 9 bearing caps, camshaft housing
plug, oil control valve filter and 2 camshafts.

Fig. 104: Removing Bearing Cap Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
26.REMOVE SEMICIRCULAR PLUG
27.REMOVE TIMING BELT PLATE RR RH NO.2
a. Remove the 2 bolts and timing belt plate.
28.REMOVE TIMING BELT PLATE RR RH
a. Remove the bolt, stud bolt and timing belt plate.
29.REMOVE TIMING BELT PLATE RR LH NO.2
a. Remove the 2 bolts and timing belt plate.
30.REMOVE TIMING BELT PLATE RR LH
a. Remove the bolt and timing belt plate.
31.REMOVE CYLINDER HEAD SUB-ASSY
a. Uniformly loosen the 10 cylinder head bolts on one side of each cylinder head in several passes in
the sequence shown in the illustration.

Fig. 105: Removing Cylinder Head Bolts
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Fig. 106: Identifying Cylinder Head Bolt Into Portion A
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b. Lift the cylinder head from the dowels on the cylinder block, and place the cylinder head on
wooden blocks on a bench.
HINT:
If the cylinder head cannot be removed, pry between the cylinder head and cylinder block with a
screwdriver.

Fig. 107: Lifting Cylinder Head From Dowels
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32.REMOVE CYLINDER HEAD LH
a. Uniformly loosen the 10 cylinder head bolts on one side of each cylinder head in several passes in
the sequence shown in the illustration.

Fig. 108: Identifying Cylinder Head LH
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Fig. 109: Identifying Cylinder Head Bolt Into Portion A
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Lift the cylinder head from the dowels on the cylinder block, and place the cylinder head on
wooden blocks on a bench.
HINT:
If the cylinder head cannot be removed, pry between the cylinder head and cylinder block with a
screwdriver.