Valveclearances; Valveclearance Measurement - Triumph DAYTONA 675 Service Manual

Cylinder Head
9. Before fitting the camshaft drive chain tensioner,
ensure that each camshaft rotates freely using service
tool T3880102. Do not rotate either camshaft by
more than .
5
1. Exhaust camshaft
2. Tool T3880102
A Caution
If any components have been renewed, the valve
clearances must be checked and adjusted. Running with
incorrectly adjusted valve clearances may cause excess
engine noise, rough running and engine d a mage.
10. Refit the camshaft drive chain tensioner (see page 3-
10).
11. Rotate the engine through 4 full revolutions, and
reset number 1 cylinder to TDC. Ensure that the
'dot' mark on the primary gear aligns with the line
on the crankcase.
1. ' Dot' mark
2. Marker line
3.18
Service Manual - Daytona 675, Street Triple and Street Triple R
12. Check that the camshaft timing marks align as
ill ustrated below. Rectify any misalignment before
proceeding.
gaaal
Camsha
to Cylinder Head Alignment Marks
ft
13. Check the valve clearances. Adjust as necessary (see
page 3-19).
Valve Clearances
Camshaft, valve, valve shim and valve seat wear affects the
valve clearances. The effect of this wear is to change the
gap between the camshaft and tappet bucket, causing
engine noise and improper running. If the valve
clearances become too small, permanent damage to the
valve and valve seat will take place. If the valve clearance
becomes too great, the engine will become noisy and will
not run correctly.
Valve Clearance Measurement
Note:
• Valve clearance measurement must be
carried out with the engine cold.
1. Remove the camshaft cover (see page 3-7).
2. Remove the spark plugs to reduce compression
resistance when turning the engine.
Select a high gear and, using the rear wheel, turn the
3.
engine until a pair of camshaft lobes are positioned
pointing away from the valves.
4. Using feeler gauges, measure and record the
clearances for this pair of valves only.
5. Repeat the process until the valve clearances for all
valves have been checked.
Note:
• If the measurement does not fall within the
specified range, adjustment must be made.
• The correct valve clearances are in the
range given below:
^ uMP