Apr. 2007
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417W291A
417W290A
417W289A
► CAMSHAFT OIL CLEARANCE
1. Measure the I.D. of the camshaft bore on the crank-
case with an inside micrometer.
2. Measure the O.D. of the camshaft journal with an out-
side micrometer.
3. If the clearance exceeds the allowable limit, replace the
shaft.
► CAMSHAFT ALIGNMENT
1. Support the camshaft's both end journals with V blocks
on a fl at table. And set a dial indicator with its tip on the
intermediate journal.
2. Rotate the camshaft on the V block and get the eccen-
tricity (half of the measurement).
3. If the eccentricity exceeds the allowable limit, replace
the camshaft.
► CAM HEIGHT
1. Measure the height of the camshaft lobes at their larg-
est O.D. with an outside micrometer.
2. If the measurement is less than the allowable limit, re-
place the camshaft.
Factory spec. Allowable limit
Oil clearance
0.050 ~ 0.091 mm
0.002 ~ 0.004 in.
0.15 mm
0.006 in.
Journal O.D.
39.934 ~ 39.950 mm
1.572 ~ 1.573 in.
-
Bore I.D.
40.000 ~ 40.025 mm
1.575 ~ 1.576 in.
-
Allowable limit
0.05 mm
0.002 in.
Factory spec. Allowable limit
(IN.)
33.59 mm
1.322 in.
33.54 mm
1.320 in.
(EX.)
33.69 mm
1.326 in.
33.64 mm
1.324 in.
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