Triumph Daytona 955i, Service Manual

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T° 1 U M 1' H
CYLINDER HEAD & CAMSHAFT 3
VALVES AND VALVE STEM SEALS
Removal from the cylinder head
1. Remove each valve from the head using a valve
spring compressor. The compressor must act on
the top cup to allow removal of the valve collets.
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1. Valve Removal
2. Once the collets are released, remove the following
items:
• collets
• valve spring cap
• valve springs
• valve stem seal
• thrust washer
• valve (de-burr before removal)
^ t
2
Close wound section -----^
3
a
5
6
7
1. Collets
2. Valve Spring Cap
3. Inner Valve Spring
4. Outer Valve Spring
5. Thrust Washer
6. Stem Oil Seal
7. Valve
Installation
1.
Apply a thin coat of molybdenum disulphide grease
to the valve stem.
2.
Install the valve into the valve guide and refit the
thrust washer to the valve spring recess (if
removed).
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.
• Firstly, press the seal down the valve stem until
the lower side of the seal comes into contact
with the valve guide. Greater resistance is felt at
this contact point and 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 guide. Once correctly positioned, the seal
cannot be pushed down any further.
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