Triumph Daytona 955i, Руководство по обслуживанию

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T1WMII
CYLINDER HEAD & CAMSHAFT 3
Installation
NOTE:
• On all engines, the cylinder liners must be
resealed prior to refitting the cylinder head.
Refer to the crankshaft, pistons and liners
section for details.
1. Position the cam chain rubbing blade to the left
hand side of the upper crankcase. When correctly
fitted, the blade positively locates at the lower end
on a web. The upper section will then fit snugly into
the recess in the top of the crankcase.
1. Cam Chain Rubbing Blade
2.
Thoroughly clean the upper faces of the crankcase
taking care not to damage the mating surfaces. Fit a
new cylinder head gasket
('top' marking
uppermost) ensuring that the head to crankcase
location dowels are correctly in place.
1. Cylinder Head Gasket
2. Dowels
3.
Ensure that the cylinder head face is completely
clean.
4. Carefully lower the cylinder head over the rubbing
blade and locate the head onto the dowels.
CAUTION: Using the correct procedure
• to fit and tighten the cylinder head bolts
will ensure the long term reliability of the cylinder
head gasket.
Clean each bolt, paying particular a ttention to the
threads and under-bolt-head areas. If any of the
threads or bolt-head areas are damaged, replace
the bolt(s).
Lubricate the threads with engine oil, and then
wipe clean with a lint-free cloth leaving minimal oil
on the threads (that is, almost dry to touch).
Tighten the bolts using the three-stage procedure
given below.
Failure to observe these important items may lead
to engine damage through a damaged head
gasket.
5.
Fit the bolts to the head and tighten until finger tight.
The head bolts are finally tightened in 3 stages.
This is to ensure that the cylinder head gasket seals
correctly to the head and crankcase. The 3 stages
are as follows:
NOTE:
• For stages A and B of the head bolt tightening
operation, a torque wrench of known, accurate
calibration must be used.
A Tighten the head bolts, in the same numerical
sequence used to release the bolts, to 20 Nm.
B Tighten the head bolts in the same numerical
sequence used to release the bolts, to 27 Nm.
C For the final torque operation, which again is carried
out in the same • numerical sequence used to
release the bolts, a 'torque turn' method is used.
The bolts must be turned through 90
0
to reach the
final se
tt ing. To accurately gauge the 90° turn, use
service tool 3880105-T0301 as follows:
Fit the tool between the torx socket and the drive
handle and locate the torx drive to the head bolt.
Pick an increment point on the torque turn gauge
which aligns with a suitable reference point on the
head. Tighten the bolts until 9 of the 10
0
gauge
increments have rotated past the chosen point on
the head.
Increment
marking
,o.
^C.RE1^lEN^S
Tool 3880105-T0301
3.23