Checking The Timing Chain, Camshaft Sprockets, And Timing Chain Guides; Checking The Timing Chain Tensioner - Yamaha YZF-R6(V) 2006 Service Manual

L LLL L LLL L 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.
Camshaft journal diameter
22.459–22.472 mm (0.8842–
0.8847 in)
EAS23870
CHECKING THE TIMING CHAIN, CAMSHAFT
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.
L LLL L L LLL L L LLL L LLL a. 1/4 tooth
b. Correct
1. Timing chain roller
2. Camshaft sprocket
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 TENSIONER

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"
NOTE:
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
5-11
CAMSHAFTS