Removing The Camshafts; Checking The Camshafts - Yamaha XJR1300 2007 Service Manual

EAS23810

REMOVING THE CAMSHAFTS

1. Remove:
Timing plate cover
G
2. Align:
"T" mark on timing plate
G
(align with crankshaft position sensor station-
ary pointer)
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Turn the crankshaft clockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the "T" mark "a" with the sta-
tionary pointer "b". (TDC)
NOTE:
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
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3. Loosen:
Camshaft sprocket bolts
G
4. Remove:
Timing chain tensioner cap bolt
G
Timing chain tensioner
G
Gasket
G
5. Remove:
Timing chain guide (top side) "1"
G
Camshaft sprockets "2"
G
Camshaft caps "3"
G
Timing chain guide (exhaust side)
G
NOTE:
For reference during installation, put identifica-
tion marks on each camshaft cap.
ECA13720
CAUTION:
To prevent damage to the cylinder head,
camshafts or camshaft caps, loosen the
camshaft cap bolts in stages and in a criss-
cross pattern, working from the outside in.
a b
3
3
6. Remove:
Intake camshaft "1"
G
Exhaust camshaft "2"
G
NOTE:
To prevent the timing chain from falling into the
crankcase, fasten it with a wire "3" to it.
2
EAS23850

CHECKING THE CAMSHAFTS

1. Check:
Camshaft lobes
G
Blue discoloration/pitting/scratches → Re-
place the camshaft.
2. Measure:
Camshaft lobe dimensions "a" and "b"
G
Out of specification→Replace the camshaft.
5-7
CAMSHAFTS
3
2
1
3
1
3