Triumph 2012 Tiger 800 Service Manual page 80

Cylinder Head
J
C
a
Camshaft and earing
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
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
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 :
1 . Standard journal
3. Examine the camshaft and camshaft ladder for
excessive wear and damage.
3. 1 4
p Inspection
sprocket to the different
·
2
2 3.940 - 2 3 .960 m m
SeiVice Manual Tiger 800 and Tiger 800XC
-
4. Check the journal-to-head
' Piastigage' <Triumph part number 3 8801 5 0-T03 01 >
as follows:
a) Ensuring that the camshaft sprocket align ment
marking is located as for removal, assemble one
camshaft to the head and p rog ressively tig hten the
camshaft ladder i n the sequence shown overleaf
3-15>.
<see page
b) Remove the camshaft ladder using the bolt release
sequence g iven ea rlier. Wipe the exposed a reas of
both the camshaft journal and a single cap area of
the ladder.
c)
Apply a thi n smear of g rease to the jou rnal and a
smal l 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 i n place.
e) Refit the camshaft ladder then evenly and
progressively tighten all the camshaft ladder bolts
in the correct sequence <see camshaft instal lation>.
f)
Release the bolts and remove the ca mshaft ladder.
Using the gauge provided with the Plastigage kit,
measu re the width of the now compressed
Plastigage.
Note:
•
The camshaft ladder
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.
Calculate the journal clearance � sing the Plastigage
5.
chart supplied with the Plastigage kit �
clearances, using
is unique to each