Triumph 2010 Tiger 800, Service Manual

Page: 114 / 508

Crankshaft, Connecting Rods and Pistons
Connecting Rod Big End Bearing
Selection/Crankshaft Journal Wear
Check
1. Measure the bearing and crankshaft journal
clearance as follows.
Note:
•
The crankshaft journal clearances are
measured using 'Piastigage' <Triumph part
number 3880150-T0301 ).
•
Do not turn the connecting rod and
crankshaft during the clearance
measurement as this will damage the
'Piastigage'.
a> Remove the big end cap from the journal to be
checked.
b) Wipe the exposed areas of the
crankshaft journal,
and the bearing face inside the cap.
d
Apply a thin smear of grease to the journal and a
small quantity of silicone release agent to the
bearing.
d) Trim a length of the Plastigage to fit across the
journal. Fit the strip to the journal using the grease
to hold the Plastigage in place.
e> Lubricate the threads and under-head of the bolt
with molybdenum disulphide grease. Refit the
bearing and cap and tighten the big end bolts (see
page
5-9).
f)
Release the bolts and remove the cap being
measured. Using the gauge provided with the
Plastigage kit, measure the width of the
compressed Plastigage.
Checking the Measured Clearance
Con rod big end bearing/crankshaft journal
clearance
Standard:
Service limit:
Note:
0.035 - 0.065 mm
0.070 mm
•
If the measured clearance exceeds the
service limit, measure the crankshaft journal
diameter.
Crankshaft Journal diameter
Standard:
Service limit:
Note:
32.984 - 33.000 mm
3 2.960 mm
•
If any crankshaft journal has worn beyond
the service limit, the crankshaft must be
replaced. Due to the advanced techniques
used during manufacture, the crankshaft
cannot be re-ground and no oversize
bearings are available.
5.10
SeNice Manual
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Tiger 800 and Tiger SOOXC