1. INSPECT TIMING BELT
If there any defects as shown in the illustrations, check these points:
(a) Premature parting
(b) If the belt teeth are cracked or damaged, check if either camshaft is locked.
(c) If there is noticeable wear or cracks on the belt face, check if there are nicks on the side of the idler pulley lock and the water pump..
(d) Even 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 for foreign materials on the pulley teeth.
If necessary, replace the timing belt.
2. INSPECT IDLER PULLEYS
(a) Visually check the seal portion of the idler pulley for oil leakage.
If leakage is found, replace the idler pulley.
(b) Check that the idler pulley turns smoothly.
If necessary, replace the idler pulley.
3. INSPECT TIMING BELT TENSIONER
(a) Visually check the seal portion of the tensioner for oil leakage.
HINT: If there is only the faintest trace of oil on the seal on the push rod side, the tensioner is all right.
If leakage is found, replace the tensioner.
(b) Hold the tensioner with both hands, and push the push rod strongly to check that it doesn't move.
If the push rod moves, replace the tensioner.
NOTICE: Never hold the tensioner push rod facing downward.
(c) Measure the protrusion of the push rod from the housing end.
Protrusion: 10.5 - 11.5 mm (0.413 - 0.453 in.)
If the protrusion is not as specified, replace the tensioner.
4. INSPECT WATER PUMP ( CO-7 )