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Lexus SC 430 V8-4.3L (3UZ-FE) (2003)03 · Maintenance
03 · Maintenance

Timing Belt: Specifications (page 3 of 8)

Make
Lexus
Model
SC 430
Engine
V8-4.3L (3UZ-FE)
Year
2003
Section
Timing Belt
MaintenanceSpecifications · page 3 of 8
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a. If re-using the timing belt, check the installation marks on the timing belt.

1. Check that there are 3 installation marks on the timing belt by turning the crankshaft as shown in the illustration.

If the installation marks have disappeared, place a new installation mark on the timing belt before removing each part.

b. Set the No.1 cylinder to approximately 50° BTDC/compression.

1. Using the crankshaft damper bolt, turn the crankshaft to align the timing marks of the crankshaft timing pulley and oil pump body.

2. Check that the timing marks of the camshaft timing pulleys and timing belt plates aligned.

If not, turn the crankshaft 1 revolution (360°).

3. Using the crankshaft damper bolt, turn the crankshaft counterclockwise by approximately 50°.

NOTICE:  If the timing belt is disengaged, having the crankshaft pulley at the wrong angle can cause the piston head and valve head to
come into contact with each other when you remove the camshaft timing pulley and camshaft, causing damage. So always set the
crankshaft pulley at the correct angle.

c. Alternately loosen the 2 bolts, and remove them, the belt tensioner and dust boot.

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Parts & tools for this job For 2003 Lexus SC 4.3L

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