Installation - Triumph 2012 Tiger 800 Service Manual

Cylinder Head
Note:
•
Ensure inlet and exhaust valve components
do not become mixed.
1. Collets
2. Valve spring retainer
3. Valve spring
4. Valve spring base
S. Valve stem oil seal
6. Valve

Installation

1. Lubricate the valve stems with a 50150 solution of
engine oil and molybdenum disulphide grease.
2. Install the valve into the valve guide and refit the
spring base to the valve spring recess in the head.
3. Fit the valve stem seal over the valve stem and, using
a suitable tool, press down fully until the seal is
correctly seated over the valve guide.
Note:
•
During fitment of the valve stem seal, two
distinctly different degrees of resistance will
be noted when the seal is correctly fitted.
•
Firsdy, press the seal down the valve stem
until the lower side of the seal comes into
contact with the
resistance is felt at
further gentle pressure is then required to
locate the seal over the top end of the valve
guide.
•
On application of this pressure, the seal can
be felt to positively locate over the top face
of the valve
positioned, the seal cannot be pushed down
any further.
3.24
valve guide. Greater
'
this contact point and
guide. Once correctly
Service Manual - Tiger 800 and Tiger 800XC
Incorrect fitment of the valve stem oil seals could lead to
h igh oil consumption and blue smoke emissions from
the exhaust system. Do not use excessive force in fitting
the seal as this may break the seal ring.
4. Install the valve spring over the valve stem. Ensure
the close wound, colour coded ends of the springs
are fitted downwards <towards the piston).
5. Fit the valve spring retainer.
6. Compress the valve spring ensuring that the spring
is compressed squarely to prevent damage to the
valve stem and cylinder head.
Z Fit the valve collets ensuring correct collet location in
the spring retainer and valve as the spring
compressor is released.
Always check for correct location of the valve collets
during and after assembly. If not fitted correctly, the
collets may become dislodged when th� engine is
running allowing the valves to contact the pistons. Any
such valve to piston contact will cause severe engine
damage.