Camshaft Identification; Cam Sprocket Orientation - Triumph Rocket III Service Manual

Cylinder Head
Failure to release the cam ladder fixings
progressively and evenly may result in damage to
the cam ladder, the camshafts or the cylinder head
itself. A damaged cam ladder cannot be replaced
as an individual item. It can only be obtained as
part of a new cylinder head.
5. Once all the upward force on the cam ladder has
been progressively released, collect all the bolts
and remove the ladder.
6. Secure the cam chain to prevent it from falling
into the front of the engine.
Note:
• The sound suppression bolt will prevent
the cam chain from falling completely
away from the head.
7. Lift the cam chain from one of the camshafts to
allow removal of the shaft from the cylinder head.
,bqb
1. Removing a camshaft
8. Repeat for the second camshaft.
Camshaft identification
The inlet camshaft can be identified by a groove on a
machined surface in its centre. The same surface on
the exhaust cam is plain.
1. Inlet cam (grooved)
2. Exhaust cam (plain)
Cam sprocket orientation
The same drive sprocket is used for both inlet and
exhaust cams.
To attach the sprocket in the correct relationship to the
cams, two pairs of offset bolt holes are used, with inlet
and exhaust bolt holes being clearly marked ('IN' for
inlet and 'EX' for eXhaust). The holes will also prevent
the sprockets from being fitted 180
0
out of alignment.
1. Sprocket
2. IN marking
3. EX marking
To fit a sprocket to an inlet cam, position the sprocket
to the cam and align the hole marked 'IN' with one of
the threaded holes in the camshaft. If both bolt-holes
in the cam line up correctly with the holes in the
sprocket, the sprocket is in the correct place. If the
holes do not line up, then the sprocket should be
rotated by a half-turn.
3.10
Service Manual - Rocket III