Cylinder Head
Outrigger Journal Diameter
1
I
Standard:
1
22.93
-
22.96 mm
1
I
1.
Exhaust Camshaft
2.
Plain Section
3.
lnlet Camshaft
4.
Grooved section
Standard:
Camshaft and Bearing Cap Inspection
22.953
-
22.956 mm
1.
Inspect the camshaft sprockets for damaged and
worn teeth. Replace as necessary.
Standard Journal Diameters
1.
Outrigger Journal
2.
Standard Journal
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.
3. Examine all camshaft and camshaft bearing
1.
lnlet 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.
A
Caution
4.
Check the journal-to-head clearances, using
'
Plastigage'
(Triumph part number 38801 50-
7-0301) as follows:
caps for excessive wear and damage, paying
particular attention to the outrigger caps.
5. Ensuring that the camshaft sprocket alignment
marking is located as for removal, assemble one
camshaft to the head and progressively tighten
the bearing caps and cam cap ladder to
10
Nm.
6. Remove the cam cap and cam cap ladder using
the bolt release sequence given earlier. Wipe
the exposed areas of both the camshaft journal
and a single cap or cap area of the ladder.
*
Apply a thin smear of grease to the journal
and a small quantity of silicone release
agent to the cap.
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.
Refit the cap and cam cap ladder then
evenly and progressively tighten all the
camshaft cap and ladder bolts to
10
Nm
in
the correct sequence (see camshaft
installation).
Release the cap bolts and remove the cap1
ladder. Using the gauge provided with the
Plastigage kit, measure the width of the now
compressed Plastigage.
Service
Manual
-
Speed Triple
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