Crankshaft Main Bearing/Journal Wear - Triumph 2012 Tiger 800 Service Manual

Crankshaft, Connecting Rods and Pistons

Crankshaft main bearing/journal wear

Shell Colour White
Crankcase 3 5.9 8 2
Bore
3 5 .973
Journal Dia.
3 3 .000
3 2.993
Running 0.044
Clearance 0.020
Minor differences in crankshaft and crankcase dimensions
are compensated for by using selective bearings. For
further information on bearing part number to colour
cross-references, see the latest parts information.
Measure the bearing to cran kshaft main
•
journal clearance using Plastigage <Triumph
part nu mber
5-10>.
page
Checking Crankshaft Journal Clearance using
Plastigage
Crankshaft main bearing/journal clearance
Standard :
Service limit:
If the clearance exceeds the service limit, measure the
diameter of the cran kshaft main journal.
5.12
Main Bearing Selection Chart
<all dimensions in millimetres>
Red Red
3 5 .981 3 5.989
3 5.973 3 5.981
3 2.992 3 3.000
3 2.984 3 2.993
0.044 0.043
0.020 0.021
3 8 8 0 15 0-T 0 3 0 1)
<see
0.020 - 0.044 mm
0.07 mm
SeNice Manual Tiger 800 and Tiger 800XC
-
Blue
3 5.988
3 5 .9 81
3 2.992
3 2.984
0.04 3
0.020
Crankshaft main journal diameter
Standard:
Service limit:
Note:
If any journal has worn beyond the service
•
limit, the crankshaft must be replaced. Due
to the techniques used during manufacture,
the crankshaft cannot be reground and no
oversize bearings are available.
Select bearings as fol lows:
1. Measure and record the diameter of each crankshaft
main bearing journal.
2. Measure and record each main bearing bore
diameter in the cra nkcase <bearings removed>.
Compare the data found with the chart above to select
bearings individually by journal.
For example:
Crankshaft Journal diameter
Crankcase Bore
Bearing Required
Blue Green
3 5 .997 3 5.997
3 5 .989
3 5 .989
3 3 .000 3 2.992
3 2.993 3 2.984
0.04 3 0.044
0.020 0.020
3 2 .9 84- 3 3 .000 m m
3 2 .960 mm
3 2.995 m m
3 5.997 m m
Blue