Chery A21 2005 Service Manual page 409

CHERY A21 SERVICE MANUAL
2) Check camshaft
Measure the
micrometer caliper.
Diameter
Replace with the new camshaft if the
measured value exceeds the limit value.
3) Examine camshaft
Measure the high of cam with micrometer
caliper.
Intake
Cam
Exhaust
Cam
Replace with the new camshaft if the
measured value exceeds the limit value.
4) Examine diameter of valve stem
a: Measure the diameter of valve stem with
micrometer caliper.
See the picture for measuring points: they are
26, 52, and 78 mm from measure positions to
bottom of valve.
Valve
Guide
Internal Diameter
Of Valve Guide
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camshaft diameter
Standard Value Limit Value
（mm）
(mm)
-0.040
￠24
-0.053
Standard Value limit value
（mm） （mm）
37.15
37.05
External Diameter
Of Valve Stem
MECHANISM OF 2.0NALC ENGINE
with
20
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Measuring Point