Checking The Camshaft Sprockets - Yamaha VMAX 2009 Service Manual

3. Measure:
• Camshaft runout
Out of specification → Replace.
Camshaft runout limit
0.030 mm (0.0012 in)
4. Measure:
• Camshaft-journal-to-camshaft-cap clearance
Out of specification → Measure the camshaft
journal diameter.
Camshaft-journal-to-camshaft-
cap clearance
0.028–0.062 mm (0.0011–0.0024
in)
M MMM M MMM M M MMM M
a. Install the camshaft into the cylinder head
(without the camshaft caps).
b. Position a strip of Plastigauge® "1" onto the
camshaft journal as shown.
c. Install the camshaft caps.
M MMM M M MMM M M MMM M
1
TIP
• Tighten the camshaft cap bolts in stages and in
a crisscross pattern, working from the inner
caps out.
• Do not turn the camshaft when measuring the
camshaft journal-to-camshaft cap clearance
with the Plastigauge®.
d. Remove the camshaft caps and then mea-
sure the width of the Plastigauge® "1".
L LLL L LLL L
5. Measure:
• Camshaft journal diameter "a"
Out of specification → Replace the camshaft.
Within specification → Replace the cylinder
head and the camshaft caps as a set.
MMM
EAS23870

CHECKING THE CAMSHAFT SPROCKETS

The following procedure applies to both of the
camshaft sprockets.
1. Check:
• Camshaft sprocket
More than 1/4 tooth wear "a" → Replace the
camshaft sprocket, timing chain, and crank-
shaft as a set.
5-15
CAMSHAFTS
Camshaft cap bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
1
L LLL L L LLL L L LLL L
Camshaft journal diameter
21.959–21.972 mm (0.8645–
0.8650 in)
L LLL L LLL