Checking The Measured Clearance; Connecting Rod Bearing Selection - Triumph Speed Triple Service Manual

Checking the Measured Clearance
Con rod big end bearinglcrankpin clearance
I
Standard:
1
0.036
-
0.066 mm
1
If the measured clearance exceeds the
service limit, measure the crankpin
diameter.
Service limit:
Crankpin diameter
0.1 mm
I
Standard:
1
34.984
-
35.000 mm
I
Note:
Service limit:
1
34.960 mm
Note:
0
If any crankpin has worn beyond the
service limit, the crankshaft must be
replaced. Due to the advanced techniques
used during manufacture, the crankshaft
cannot be reground and no oversize
bearings are available.
Connecting Rod Bearing Selection
Minor differences in connecting rod dimensions are
compensated for by using selective bearings. For
further information on bearing part number to colour
cross-references, see the latest parts information.
For instance:
Con-rod Mark 5
Con-rod Big End Diameter 38.002
Crankpin Diameter 34.987
Required Bearing Red
Note:
Repeat the measurements for all
connecting rods and their respective
crankpins.
It is normal for the bearings selected to
differ from one connecting rod to another.
3. Install the new bearings in the connecting rod.
1. Big end bearings
arin
Measure each crankpin diameter.
Note the connecting rod marking.
the running clearance is correct before final
assembly. Severe engine damage could result from
2. Select the correct bearings by matching the
I
incorrectclearance.
-
-
I
(
information found with the chart below.
Big end bearing selection chart
5.1
0
Service Manual
-
Speed Triple
Shell
Colour
Rod
Marking
Con-rod
Big End
Bore Dia.
Crankpin
Dia.
Running
Clearance
White
5
38.008
38.000
35.000
34.992
0.066
0.036
Red
5
38.008
38.000
34.991
34.984
Red
4
38.01 8
38.009
35.000
34.992
Blue
4
38.01 8
38.009
34.991
34.984