Toyota Supra 1990 Manual page 58

EM-26
ENGINE MECHANICAL - Timing Belt
EM0126
EM0127
EM0128
EM0129
EM0130
INSPECTION OF COMPONENTS
1. INSPECT TIMING BELT
NOTICE:
• Do not bend, twist or turn the belt inside out.
• Do not allow the belt to come into contact with oil. water
or steam.
• Do not utilize belt tension when installing or removing
the set bolt of the camshaft timing pulley.
If there are defects as shown in the illustrations. Check the
following points and replace the timing belt if necessary.
(a) Premature parting
• Check for proper installation.
• Check the timing belt cover gasket for damage and
proper installation.
(b) If the belt teeth are cracked or damaged, check to see
if the camshaft is locked.
(c) If there is noticeable wear of cracks on the belt face,
check to see if there are nicks on one side of the idler
pulley lock.
(d) If there is wear or damage on only one side of the belt,
check the belt guide and the alignment of each pulley.