Triumph Tiger Explorer XR 2017 Service Manual page 115

Tiger Explorer XR Series
5. Zero the dial gauge.
6. Gently rock the valve to the opposite side of the valve guide in line with the camshaft and note the reading
on the dial gauge.
7. Repeat steps two to six but with the rocking of the valve head at 90° to the original measurement, as shown
in image below. Note the reading on the dial.
8. The maximum movement of the valve in either direction must be less than 0.5 mm.
Note
Due to the methods used to assemble the valve guides, these parts cannot be replaced. If the
maximum movement of the valve exceeds 0.5 mm in either direction, the cylinder head must be
replaced.
Install the cylinder head valve springs, see Valves and Valve Stem Seals - Installation.
Install the cylinder head, see Cylinder Head - Installation.
Valve Face Inspection
1. Remove any carbon build-up from the valve head area. Examine the valve seat face, checking in particular
for signs of cracking or pitting.
Valves and Valve Stem Seals - 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 spring platform 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.
Firstly, press the seal down the valve stem until the lower side of the seal comes into contact with
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ckcb
1. Dial gauge
2. Flat ended contact point
3. Direction valve rocked to valve guide
1
ckca
1. Dial gauge
CYLINDER HEAD