ENGINE 3-22
CAMSHAFT CAM WEAR
Worn-down cams are often the cause of mistimed valve opera-
tion resulting in reduced output power. The limit of cam wear
is specified for both intake and exhaust cams in terms of cam
height
@ ,
which is to be measured with a micrometer. Re-
place camshafts if found worn down to the limit.
Cam height @
Service Limit
Intake cam
:
35.660 mm (1.4039 in)
Exhaust cam
:
36.620 mm (1.4417 in)
09900-20202
:
Micrometer (25 - 50 mm)
CAMSHAFT JOURNAL WEAR
Determine whether each journal is worn down to the limit or
not by measuring camshaft journal oil clearance with the
camshaft installed. Use plastigauge to read the clearance,
which is specified as follows:
Camshaft journal oil clearance
Service Limit
:
0.15 mm (0.006 in)
o Tighten the cylinder head cover bolts evenly and diagonally
to the specified torque.
Cylinder head cover tightening torque
Length
N.m kg-m
lb-ft
140 mm
21 -25 2.1 -
235
2.5 15.0 - 18.0
mm
The others
9- 11
09900-22301 : Plastigauge
0.9 - 1.1 6.5 - 8.0
NOTE:
To properly measure the oil clearance with plastigauge, all
gasket material must be removed from fitting surfaces of
cylinder head and cover. Do not apply SUZUKI BOND NO.
1216 until after the oil clearance has been determined.
If the camshaft journal oil clearance measured exceeds the
limit, measure the outside diameter of camshaft.
Replace either the cylinder head set or the cam shaft if the
clearance is incorrect.
09900-20205 : Micrometer (0 - 25 mm)
I
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