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Camshaft: Testing and Inspection





2AZ-FE ENGINE MECHANICAL: CAMSHAFT: INSPECTION

1. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

(a) Install the camshaft timing gear assembly. Installation

(b) Clamp the camshaft in a vise, and make sure that the camshaft timing gear does not rotate.





(c) Cover all the oil ports with vinyl tape except the advance side port shown in the illustration.

(d) Apply air pressure of 150 kPa (1.5 kgf/cm2, 22 psi) to the oil path





CAUTION:
Cover the paths with a piece of cloth to avoid oil splashes.

(e) Check that the camshaft timing gear revolves in the advance direction (counterclockwise) by hand.

HINT
Depending on the air pressure, the camshaft timing gear may turn to the advance side without applying force by hand. Also, if the pressure is difficult to apply because of air leakage from the port, the lock pin may be difficult to release.

(f) Check for smooth rotation.

(1) Turn the camshaft timing gear within its movable range (21°) 2 or 3 times, but do not turn it to the most retarded position. Make sure that the gear turns smoothly.

NOTICE:
Do not use air pressure to perform the smooth rotation check.

(g) Check the lock in the most retarded position.

(1) Confirm that the camshaft timing gear is locked at the most retarded position.

(h) Remove the camshaft timing gear assembly. Removal