Yamaha TMAX 2020, Руководство по обслуживанию

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5-16
CAMSHAFTS
EAS30936
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
camshafts and the timing chain as a set.
EAS30265
CHECKING THE TIMING CHAIN GUIDES
1. Check:
• Timing chain guide (intake side) “1”
• Timing chain guide (exhaust side) “2”
• Timing chain guide (upper side) “3”
Damage/wear

Replace the defective
part(s).
EAS30266
CHECKING THE TIMING CHAIN TENSIONER
1. Check:
• Timing chain tensioner
Cracks/damage/rough movement

Replace.
a. Using the valve spring compressor “1”,
push and insert timing chain tensioner rod
“2” into the timing chain tensioner housing.
TIP
Push the timing chain tensioner rod in direction
“a”, and turn the timing chain tensioner body “3”
in direction “b” until the circlip fits into the groove.
b. Lock the timing chain tensioner rod by set-
ting the circlip “4” to groove “5” while push-
ing the timing chain tensioner rod.
Camshaft journal diameter
22.959–22.972 mm
(0.9039–0.9044 in)
a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket
G088949
a
1
2
b
G088950
1
2
3
1
2
3
2
3
1
1
a
b