HYOSUNG TE 450 Service Manual page 69

3-27 ENGINE
▣ ▣ CAMSHAFT JOURNAL WEAR
Determine whether or not each journal is worn down
to the limit by measuring the oil clearance with the
camshaft installed in place.
● Use the plastigauge to read the clearance at the
widest portion, which is specified as follows :
Camshaft journal
oil clearance
(IN & EX)
If the camshaft journal oil clearance exceeds the ser-
vice limit, measure the inside diameter of the
camshaft housing and outside diameter of the
camshaft journal. Replace the camshaft or the cylin-
der head and camshaft housing depending upon
which one exceeds the specification.
Camshaft housing I.D
IN.
EX.
Small bore gauge : 09900-22401
Camshaft O.D
IN.
EX.
Micrometer(0 ~ 25 mm) : 09900-20201
▣ ▣ CAMSHAFT RUNOUT
Support the valve using a V-blocks and measure the
camshaft runout using the dial gauge. If the runout
exceeds the service limit, replace the camshaft with a
new one.
Camshaft runout
Dial gauge : 09900-20606
Magnetic stand : 09900-20701
V-block : 09900-21304
Service limit
0.15 mm (0.006 in)
Standard
22.012 ~ 22.025 mm
(0.8666 ~ 0.8671 in)
Standard
21.959 ~ 21.980 mm
(0.8645 ~ 0.8654 in)
Service limit
0.10 mm (0.004 in)