Pistons; Disassembly; Piston Wear Check - Triumph DAYTONA 675 Service Manual

Pistons

Disassembly

Note:
• It is not necessary to remove the connecting
rods from the crankshaft.
1. Remove the cylinder head (see page 3-22).
Remove the liner, using the frame from tool
2.
T3880315, and tool 13880101 (see page 5-16).
3. Remove and discard the gudgeon pin circlip from
one side of the piston.
Removing the Gudgeon Pin Circlip
4. Remove the gudgeon pin by pushing the pin
through the piston and rod toward the side from
which the circlip was removed.
F' .
Never force the gudgeon pin through the piston. This
may cause damage to the piston which may also
damage the liner when assembled.
Note:
• If the gudgeon pin is found to be tight in the
piston, check the piston for a witness mark
caused by the circlip. Carefully remove the
mark to allow the pin to be removed.
5. Piston rings must be removed from the piston using
hand pressure only. Do not over-extend the piston
rings during removal.
Note:
If the piston rings are to be re-used, note
•
the orientation of the oil control rings prior
to removal.
Om
I uMP
A
Caution
Service Manual - Daytona 675, Street Triple and Street Triple R
Crankshaft, Connecti ng Rods and Pistons

Piston Wear Check

1. Measure the piston outside diameter, 8 mm up from
the bottom of the piston and at 90
of the gudgeon pin.
3
1. Piston outside diameter
2. Measurement point
3. Circlip removal groove
Daytona 675
All Cylinders
Service limit
Street Triple and Street Triple R
All Cylinders
Service limit
Replace the piston if the measured diameter falls outside
the specified limit.
0
to the direction
73.970 — 73.980 mm
73.920 mm
73.964 — 73.980 mm
73.920 mm
5.13