ES 300 V6-3.0L (1MZ-FE) (1997)
(a) Visually check the seal portion of the tensioner for oil leakage.
If leakage is found, replace the tensioner.
NOTE: If there is only the faintest trace of oil on the seal on the push rod side, the tensioner is all right.
(b) Hold the tensioner with both hands and push the push rod strongly as shown to check that it doesn't move.
If the push rod moves, replace the tensioner.
CAUTION: Never hold the tensioner push rod facing downward.
(c) Measure the protrusion of the push rod from the housing end.
Protrusion: 10.0 - 10.8 mm (0.394 - 0.425 inch)
If the protrusion is not as specified, replace the tensioner.