Yamaha 2002 TDM900, Service Manual

Page: 270 / 475

5-21
CYLINDER HEAD
ENG
NOTE:
18 Nm (1.8 m
S
kg)
18 Nm (1.8 m
S
kg)
150
_
NOTE:
NOTE:
CAUTION:
EAS00233
INSTALLING THE CYLINDER HEAD
1. Install:
S
gasket
New
1
S
dowel pins 2
2. Install:
S
cylinder head
Pass the timing chain through the timing chain
cavity.
3. Tighten:
S
cylinder head nuts
1
X
6
Initial
2nd
Final
S
Lubricate the cylinder head nuts and bolts with
engine oil.
S
First, tighten the nuts 1
X
6 to 18 Nm (1.8
m
S
kg) with a torgue wrench.
S
Loosen the nuts one by one following the tight-
ening order and then thighten them to 18 Nm
(1.8 m
S
kg) again.
S
Retighten the nuts to 150
_
with angle torgue
gauge.
S
Use an angle torgue gauge 1 and tighten
at the correct angle.
S
If an angle torgue gauge is not available, do
not tighten at an angle because accurate
tightening cannot be expected.
Thightening in this case should be con-
trolled by torgue and final tightening
should be to 40 Nm (4.0 m
S
kg).
4. Install:
S
exhaust camshaft
S
intake camshaft
Refer to “INSTALLING THE CAMSHAFTS”.