3-22 ENGINE
CAMSHAFT
CAM WEAR INSPECTION
Check for abnormal surface damage or wear on the cam face.
Measure the cam height H with a micrometer.
Replace the camshaft if found worn down to the service limit.
# Cam height H: Service Limit: (IN) 32.57 mm
(EX) Front: 32.60 mm
Rear : 32.33 mm
CAMSHAFT JOURNAL WEAR INSPECTION
Place the Plastigauge 1 between the camshaft and cylinder head
cover and tighten the cylinder head cover bolts to the speified
torque.
! 09900-22302: Plastigauge
$ Cylinder head cover bolt: 10 N
.
m (1.0 kgf
.
m)
NOTE:
Do not rotate the camshaft after the cylinder head cover has been
tightened with the Plastigauge in place.
• Remove the cylinder head cover and take the measurement at
the widest part of the crashed Plastigauge.
# Camshaft journal oil clearance: Service Limit: 0.150 mm
If the clearance exceeds the service limit, measure the inside
diameter of camshaft journal holder using a cylinder gauge.
# Camshaft journal holder I.D.:
Standard: 22.012 – 22.025 mm
! 09900-20602: Dial gauge (1/1000 mm)
09900-22403: Small bore gauge (18 – 35 mm)
Measure the outside diameter of camshaft journal using a
micrometer.
# Camshaft journal O.D.:
Standard: 21.959 – 21.980 mm
! 09900-20205: Micrometer (0 – 25 mm)
Calculate from the measurement to determine if the clearance
falls within the standard range when the camshaft is replaced
with a new one. If the clearance does not come to the standard
range, replace both the camshaft and cylinder head with new
ones.
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