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Valve Clearance: Testing and Inspection








3MZ-FE ENGINE MECHANICAL: VALVE CLEARANCE:

INSPECTION

1. INSPECT VALVE CLEARANCE





(a) Turn the crankshaft pulley, and align the timing notch with timing mark 0 of the No. 1 timing belt cover.
(b) Check that the valve lifters on the No. 1 timing belt cover (IN and EX) are both loose.
If not, turn the crankshaft 1 revolution (360°) and align the mark as above.





(c) Check the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve clearance (Cold):





(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.





(d) Turn the crankshaft 2/3 of a revolution (240°), and check the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve clearance (Cold):





(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.





(e) Turn the crankshaft 2/3 of a revolution (240°), and check the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
Valve clearance (Cold):





(2) Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.