Checking The Timing Chain Guides; Checking The Timing Chain Tensioner - Yamaha FZ09E Service Manual

TIP ~~~~~~~~~~~~~~-
• Tighten the camshaft cap bolts in stages and in
a crisscross pattern , working from the inner
caps out.
• Do not tum the camshaft when measuring the
camshaft journal-to-camshaft cap clearance
with the Plastigauge®.
Camshaft cap bolt
10 Nm (1.0 m·kgf,
7.2
ft·lbf)
d. Remove the camshaft caps and then mea-
sure the width of the Plastigauge® "2".
2
••••••••••••••••••••••••••••••••
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.
"'""""'
Camshaft journal diameter
24.459-24.472 mm
(0.9630-0.9635 in)
a
0 - - -
CHECKING THE TIMING CHAIN AND
CAMSHAFT SPROCKET
1.
Check:
• Timing chain
Damage/stiffness
~
Replace the timing
chain and camshaft and camshaft sprocket
as a set.
CAMSHAFTS
2 . Check:
• Camshaft sprocket
More than 1 /4 tooth wear "a" ~ Replace the
camshaft sprockets and the timing chain as a
set.
a
' '
b -.;·
•
•
•
a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket
.....,...
1
,.
•
2
•
'
•
'
CHECKING THE TIMING CHAIN GUIDES
The following procedure applies to all of the
camshaft sprockets and timing chain guides.
1. Check:
• Timing chain guide (intake side) "1"
• Timing chain guide (top side) "2''
Damage/wear
~
Replace the defective
part(s).
2
1
....,,.,.
CHECKING THE TIMING CHAIN TENSIONER
1. Check:
• Timing chain tensioner
Cracks/damage/rough movement ~ Re-
place .
••••••••••••••••••••••••••••••••
a . Lightly press the timing chain tensioner rod
into the timing chain tensioner housing by
hand.
TIP ~~~~~~~~~~~~~~-
While pressing the timing chain tensioner rod,
wind it counterclockwise with a hexagon wrench
"1 "
until it stops.
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