Page 1384 - Workshop Manual - Tunland (2017)

ENGINE MECHANICAL - ROCK ARM CHAMBER, ROCK ARM , ROCK ARM CUSHION BLOCK, ROCK ARM
15-48 BRACKET & CAMSHAFT

CAUTION

• Since the camshaft is hard and brittle, do not bump or drop with care.

(a) Check whether there is any corrosion, wear
or crack on the surface of the camshaft.
Replace it if any.
(b) Place the camshaft on the V-shaped blocks.
15
(c) Rotate the camshaft, and measure the
intermediate shaft neck roundness with a dial
gage.
CAUTION

• If the maximum roundness exceeds the
specified value, replace the camshaft.

(d) Measure the cam height with a micrometer.
Standard Height:

Intake cam: 34.51～35.49mm

Exhaust cam: 33.41～34.55mm
CAUTION

If the measured value is less than the minimum,
replace the camshaft.

(e) Measure camshaft No. 5 journal diameter and
No. 1~4 Journal diameter with micrometer.
Camshaft No. 5 journal diameter: 38.955 ~
39.105mm

Camshaft No. 1~4 journal diameter: 42.955
~ 43.105mm
CAUTION

• If the measured value does not meet the
specified value, check the camshaft
journal oil film gap.