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Lexus GS 400 V8-4.0L (1UZ-FE) (1999)03 · Maintenance
03 · Maintenance

Timing Belt: Diagrams (page 11 of 19)

Make
Lexus
Model
GS 400
Engine
V8-4.0L (1UZ-FE)
Year
1999
Section
Timing Belt
MaintenanceDiagrams · page 11 of 19
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29. REMOVE NO.1 TIMING BELT IDLER PULLEY 

Using a 10 mm hexagon wrench, remove the bolt, idler pulley and plate washer.

30. REMOVE NO.2 TIMING BELT IDLER PULLEY

Remove the bolt and idler pulley.

31. REMOVE CRANKSHAFT TIMING PULLEY 

Using SST, remove the timing pulley.
SST 09950-50012 (09951-05010, 09952-05010, 09953-05010, 09953-05020, 09954-05010)

NOTICE:  Do not turn the timing pulley.

INSPECTION

1. INSPECT TIMING BELT

NOTICE:
-

Do not bend, twist or turn the timing belt inside out.

-

Do not allow the timing belt to come into contact with oil, water or steam.

-

Do not utilize timing belt tension when installing or removing the mount bolt of the camshaft timing pulley.

If there are any defects, as shown in the illustrations, check these points:
a. Premature parting

Check for proper installation.
Check the timing cover gasket for damage and proper installation.

b. If the belt teeth are cracked or damaged, check to see if either camshaft is locked.
c. If there is noticeable wear or cracks on the belt face, check to see if there are nicks on the side of the idler pulley lock and water pump.
d. If there is wear or damage on only one side of the belt, check the belt guide and the alignment of each pulley.
e. If there is noticeable wear on the belt teeth, check timing cover for damage and check gasket has been installed correctly and for foreign

material on the pulley teeth.

If necessary, replace the timing belt.

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Parts & tools for this job For 1999 Lexus GS 4.0L

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