Yamaha R6 2009, Руководство по обслуживанию

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CAMSHAFTS
5-11
d. Remove the camshaft caps and then mea-
sure the width of the Plastigauge
®
“1”.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
5. Measure:
• Camshaft journal diameter “a”
Out of specification
→
Replace the cam-
shaft.
Within specification
→
Replace the cylin-
der head and the camshaft caps as a set.
EAS23870
CHECKING THE TIMING CHAIN, CAM-
SHAFT SPROCKETS, AND TIMING CHAIN
GUIDES
1. Check:
• Timing chain “1”
Damage/stiffness
→
Replace the timing
chain and camshaft and camshaft
sprocket as a set.
2. Check:
• Camshaft sprocket
More than 1/4 tooth wear “a”
→
Replace
the camshaft sprocket and the timing
chain as a set.
3. Check:
• Timing chain guide (exhaust side)
• Timing chain guide (intake side)
• Timing chain guide (upper side)
Damage/wear
→
Replace the defective
part(s).
EAS23970
CHECKING THE TIMING CHAIN TEN-
SIONER
1. Remove:
• Timing chain tensioner rod “1”
• Timing chain tensioner spring seat “2”
• Timing chain tensioner inner spring “3”
• Timing chain tensioner outer spring “5”
• Timing chain tensioner housing “6”
TIP
Squeeze the timing chain tensioner clip “4”,
and then remove the timing chain tensioner
springs and timing chain tensioner rod.
2. Check:
• Timing chain tensioner housing
• Timing chain tensioner rod
• Timing chain tensioner spring seat
• Timing chain tensioner springs
Damage/wear
→
Replace the as a set.
3. Assemble:
• Timing chain tensioner springs
• Timing chain tensioner spring seat
• Timing chain tensioner rod
Camshaft cap bolt
10 Nm (1.0 m·kg, 7.4 ft·lb)
Camshaft journal diameter
22.459–22.472 mm (0.8842–
0.8847 in)
a. 1/4 tooth
b. Correct
1. Timing chain roller
2. Camshaft sprocket
1 2 3 4 5
6