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2-16 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
•
Measure the valve clearance between the cam and the
valve lifter with a thickness gauge [A].
Valve Clearance
Standard:
IN
0.15 ∼ 0.24 mm (0.0059 ∼ 0.0094 in.)
EX
0.22 ∼ 0.31 mm (0.0087 ∼ 0.0122 in.)
○
When positioning #1 piston TDC at the end of the
compression stroke:
Inlet Valve Clearance of #1 and #3 Cylinders
Exhaust Valve Clearance of #1 and #2 Cylinders
Measuring Valve [
•
]
Bow [A]
Camshaft Sprocket Position [B]
○
When positioning #4 piston TDC at the end of the
compression stroke:
Inlet Valve Clearance of #2 and #4 Cylinders
Exhaust Valve Clearance of #3 and #4 Cylinders
Measuring Valve [
•
]
Bow [A]
Camshaft Sprocket Position [B]
If the valve clearance is not within the specified range,
first record the clearance, and then adjust it.
•
To change the v alve clearance, remove the camshaft
chain tensioner, camshafts and valve lifters. Replace the
shim with one of a different thickness.
NOTE
○
Mark and record the valve lifter and shim locations so
they can be reinstalled in their original positions.
○
If there is no clearance, select a shim which is several
sizes smaller and then measure the clearance.
•
To select a new shim which brings the valve clearance
within the s pecified range, refer to the Valve Clearance
Adjustment Charts.