Triumph TR6 PI Operation Manual page 97

67. To obtain the true T.O.C. mark on the flywheel,
attach a dial gauge stand to the cylinder block top
face and position a dial gauge so that the stylus rests
on top of number one piston. Tum the crankshaft in
a clockwise direction until the piston reaches the
highes point as indicated by the dial gauge. Make a
scribe mark on the flywheel outer edge opposite the
line on the engine rear adaptor plate. Turn the
crankshaft in an anti-clockwise direction until the
piston again reaches its highest point and make a
further mark on the flywheel opposite the line on the
adaptor plate. To obtain the true T.O.C. mark bisect
the gap between the two scribe lines with a chisel.
68. Fit the engine front mounting plate gasket using
jointing compoLad and fit the mounting plate
locating it over the two dowels.
69. Secure the plate with the three bolts and two screws.
70. With the flat end leading and the spigot end trailing,
insert the camshaft into the cylinder block.
71. Secure the camshaft with the keeper plate and two
bolts. -
72. Check the camshaft end-float.
73. Turn the crankshaft so that number one and six
pistons are at true T.O.C.
74. Turn the camshaft so that the milled cut-a-way is
positioned at twenty - past - four which is
approximately the correct position for timing.
75. Fit the camfollowers.
76. Re-stud the block and fit the cylinder head,
ensuring:-
a. A new gasket is fitted.
b. The retaining nuts are tightened to the correct
torque and in the correct sequence 12.29.27.
77. Fit the push rods ensuring that the ball ends locate
properly in the camfollowers.
78. Fit the rocker shaft assembly and secure with the six
nuts and spring washers.
79. Adjust all valve clearances 12.29.48.
80. Adjust numbers eleven and twelve valve clearances to
0·120 in.
NOTE: This clearance may vary according to the lift of the
camshaft employed. The clearance should be
sufficient to enable feeler gauges of reasonable
thickness to be inserted when the valves are on the
'rock'.
81. Oscillate the camshaft a few degrees so that numbers
eleven and twelve valves are on the 'rock' whilst
checking both valve clearances with two feeler gauges
of the same value. When the clearances are the same
the camshaft and, crankshaft are in their correct
relationship.
Continued
ENGINE
71
NT2191
Triumph TR6 Manual. Part No. 545277 Issue 1
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NT2194
12.41.05 Sheet 5