Triumph 2010 Tiger 800, Service Manual

Page: 80 / 508

Cylinder Head
Camshaft and
J
earing C
a
p Inspection
1.
Inspect the camshaft sprockets for damaged and
worn teeth. Replace as necessary.
The same sprocket is used for both inlet and exhaust
camshafts. To attach the
·
sprocket to the different
camshafts, different bolt holes are used.
Never fit a camshaft sprocket to a camshaft using
incorrectly identified bolt holes. Severe engine damage
will result from incorrect attachment.
1
2
1. Inlet camshaft bolt holes
2. Exhaust camshaft bolt holes
2. Measure the camshaft journals with a micrometer. If
any journal is outside the specified tolerance, replace
the camshaft.
Standard Journal Diameters
Standard: 2 3.940 - 23.960 mm
1 .
Standard journal
3. Examine the camshaft and camshaft ladder for
excessive wear and damage.
4. Check the journal-to-head clearances, using
'Piastigage' <Triumph part number 3 880150-T0301 >
as follows:
a) Ensuring that the camshaft sprocket alignment
marking is located as for removal, assemble one
camshaft to the head and progressively tighten the
camshaft ladder in the sequence shown overleaf
<see page
3-15>.
b) Remove the camshaft ladder using the bolt release
sequence given earlier. Wipe the exposed areas of
both the camshaft journal and a single cap area of
the ladder.
c)
Apply a thin smear of grease to the journal and a
small quantity of silicone release agent to the
camshaft cap area of the ladder.
d) Size a length of the Plastigage to fit across the
camshaft journal. Fit the Plastigage to the camshaft
journal using the grease to hold the strip in place.
e) Refit the camshaft ladder then evenly and
progressively tighten all the camshaft ladder bolts
in the correct sequence <see camshaft installation>.
f)
Release the bolts and remove the camshaft ladder.
Using the gauge provided with the Plastigage kit,
measure the width of the now compressed
Plastigage.
Note:
•
The camshaft ladder is unique to each
cylinder head and is, therefore, not available
individually. If the camshaft ladder is worn or
damaged, the complete cylinder head must
be replaced.
Measuring the Compressed Plastigage.
5. Calculate the journal clearance �sing the Plastigage
chart supplied with the Plastigage kit�
3. 1 4
SeiVice Manual
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Tiger 800 and Tiger 800XC