Camshaft, Camshaft Chain
Camshaft, Camshaft Cap Wear Inspection
The journal wear is measured using plastigage (press
gauge), which is inserted into the clearance to be mea-
The plastigage indicates the clearance by the
amount it is compressed and widened when the parts are
Cut strips of plastigage to journal width. Place a strip on
each journal parallel to the camshaft with the camshaft in-
stalled in the correct position and so that the plastigage
will be compressed between the journal and camshaft
[A] Plastigage Strip
Install the camshaft caps, tightening the bolts in the cor-
Torque - Camshaft Cap Bolts: 12 N·m (1.2 kgf·m, 104 in·lb)
Do not turn the camshaft when the plastigage is be-
tween the journal and camshaft cap.
Remove the camshaft caps again, and measure the plas-
tigage width [A] to determine the clearance between each
journal and camshaft cap. Measure the widest portion of
If any clearance exceeds the service limit, measure the
camshaft journal diameter and the camshaft bearing in-
If any of the measurements is beyond the service limit,
replace the worn part and check the clearance again.
Camshaft Journal, Camshaft Cap Clearance
0.030 ∼ 0.071 mm (0.0012 ∼ 0.0028 in.)
0.16 mm (0.006 in.)
Camshaft Chain Guide Wear Inspection
Visually inspect the rubber [A] on the guides.
If the rubber is damaged or cut, replace the guides.
ENGINE TOP END 4-15