Triumph TR6 PI Operation Manual page 85

VALVE CLEARANCE
- Check and adjust
12.29.48
ENGINE
1. Isolate the battery and remove the spark plugs.
2. Remove the rocker cover 12.29.42.
3. Counting from the front of the engine, turn the
crankshaft until 10 and 12 valves are open, i.e. valve
springs fully compressed.
4. Using a feeler gauge, check the gap between the
rocker pad and valve tip of numbers I and 3 valves.
5.
If adjustment is required insert a screwdriver blade in
the slot in the adjustment pin and slacken the
locknut. Turn the adjustment pin to increase or
decrease the gap and tighten the locknut.
6. Check and if necessary adjust the remaining valve
clearances in the following sequence.
Check or adjust No.8 and 11 valves with Nos. 2 and
5 valves open
Check or adjust No.4 and 6 valves with Nos. 7 and 9
valves open
Check_or adjust No. 10 and 12 valves with Nos. 1 and
3 valves open
Check or adjust No.2 and 5 valves with Nos. 8 and
11 valves open
Check or adjust No. 7 and 9 valves with Nos. 4 and 6
valves open
7. Reverse instructions 1 and 2.
DATA
Valve clearance
ROCKER SHAFT
- Remove and refit
0'010 in (0·25 mm)
12.29.54
Removing
1.
Remove the rocker cover 12.29.42.
3
2. Remove the six nuts and washers securing the rocker
'\.1i~f~'&:JMt6>(}
shaft pedestals to the cylinder head.
3. Lift off the rocker shaft.
Refitting
4. Reverse instructions 1 to 3 ensuring:-
a.
The rocker adjustment screw ball ends locate
properly in the push rod cups.
b. The pedestal securing nuts are tightened evenly
to 26 to 34 Ibf ft (3·6 to 4'7 kgf m).
5. Adjust the valve clearances 12.29.48.
Triumph TR6 Manual. Part No. S4S277 Issue 1
12.29.48
12.29.54