Triumph 2012 Tiger 800 Service Manual page 88

Cylinder Head
Installation
1. Thoroughly clean the upper faces of the crankcase,
taking care not to da mage the mating surfaces.
2. Fit a new cylinder head gasket ensuring that the
head to crankcase location dowels are correctly in
place.
1. Cylinder head gasket
3. Ensure that the cylinder head face is completely
clean.
4. Carefully lower the cylinder head over �.the camshaft
drive chain and locate the head onto th � dowels.
Using the correct procedu re to fit and tighten the
cylinder head bolts will ensu re the long term reliability of
the cylinder head gasket.
Clean each new bolt, paying particular attention to the
threads and under-bolt-head areas. If any of the threads
or bolt-head areas are damaged, replace the bolt(s).
Tighten the bolts using the three-stage procedure given
below.
Failure to observe these important items may lead to
engine damage through a damaged head gasket.
5. Fit new bolts and washers to the head and tighten
until finger tight.
3.22
SeNice Manual Tiger 800 and Tiger 800XC
-
6.
The cylinder head bolts must be tightened in the
following sequence:
6
2
Cylinder Head Bolt Tig htening Sequence
Z
The head bolts are finally tightened in three stages,
all using the above sequence. This is to ensure that
the cylinder head gasket seals correctly to the head
and crankcase. The three stages are as follows:
Note:
•
For stages A and
tightening operation, a torque wrench of
known, accurate calibration must be used.
A: Tighten the head bolts, in the sequence
shown above, to 15 Nm.
B: Tighten the head bolts in the sequence
shown on the previous page, to 20 Nm.
•
For the final torque operation, Stage C, (see
below> which is carried out in the sequence
shown on the previous page, a 'torque turn'
method is used. The bolts must be turned
J
# rough 120° to reach the final setting. To
accurately gauge the 1 20° turn, use service
tool 3 8 80105-T0301 as follows:
4 8
B of the · head bolt