Timing Belt: Testing and Inspection

2UZ-FE ENGINE MECHANICAL: TIMING BELT:

INSPECTION

1. INSPECT TIMING BELT
(a) Visually check the timing belt for excessive wear, frayed cords, etc.
If necessary, replace the timing belt.

NOTICE:
- Do not bend or twist the timing belt or turn it inside out.





- Do not allow the timing belt to come into contact with oil, water or steam.
- Do not allow tension in the timing belt when installing or removing the bolt of the camshaft timing pulley.

2. INSPECT TIMING BELT TENSIONER ASSEMBLY





(a) Visually check the seal portion of the tensioner for oil leakage.
If leakage is found, replace the tensioner.

HINT: If there is only a faint trace of oil on the push rod, the tensioner does not need to be replaced.





(b) Hold the tensioner with both hands and push the push rod strongly as shown to check that it does not move.
If the push rod moves, replace the tensioner.

NOTE: Never face the tensioner push rod downward.





(c) Measure the protrusion of the push rod from the housing end.
Standard protrusion:
9.5 to 10.5 mm (0.374 to 0.413 in.)
If the protrusion is not as specified, replace the tensioner.
3. INSPECT NO. 1 TIMING BELT IDLER SUB-ASSEMBLY





(a) Visually check the seal portion of the idler for oil leakage.
If leakage is found, replace the idler.
(b) Check that the idler turns smoothly.
If necessary, replace the idler.