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JR
CAMSHAFT(S) (Continued)
Fig. 20 Camshaft End Play - Typical
(4) Remove camshaft sprockets and rear timing
belt cover (Refer to 9 - ENGINE/VALVE TIMING/
TIMING BELT / CHAIN COVER(S) - REMOVAL).
(5) Bearing
caps
Remove the outside bearing caps first (Fig. 21).
(6)
Loosen the camshaft bearing cap attaching
fasteners in sequence shown (Fig. 22) one camshaft
at a time.
CAUTION: Camshafts are not interchangeable. The
intake cam number 6 thrust bearing face spacing is
wider.
(7) Identify the camshafts before removing from
the head. The camshafts are not interchangeable.
(8) Remove camshafts from cylinder head.
NOTE: If removing rocker arms, identify for reinstal-
lation in the original position.
Fig. 21 Camshaft Bearing Cap Identification
CLEANING
Clean camshaft with a suitable solvent.
INSPECTION
(1) Inspect camshaft bearing journals for damage
and binding (Fig. 23). If journals are binding, check
are
identified
for
Fig. 22 Camshaft Bearing Cap - Removal
1 - REMOVE OUTSIDE BEARING CAPS FIRST
the cylinder head for damage. Also check cylinder
location.
head oil holes for clogging.
(2) Check the cam lobe and bearing surfaces for
abnormal wear and damage. Replace camshaft if
defective.
NOTE: If camshaft is replaced due to lobe wear or
damage, always replace the rocker arms.
(3) Measure the lobe actual wear (unworn area -
wear zone = actual wear) (Fig. 23) and replace cam-
shaft if out of limit. Standard value is 0.0254 mm
(0.001 in.), wear lim it is 0.254 mm (0.010 in.).
Fig. 23 Checking Camshaft(s) for Wear
1 - UNWORN AREA
2 - ACTUAL WEAR
3 - BEARING JOURNAL
4 - LOBE
5 - WEAR ZONE
INSTALLATION
CAUTION: Ensure that NONE of the pistons are at
top dead center when installing the camshafts.
ENGINE 2.0L DOHC
9 - 31
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