DK00027.fm
REPAIR MANUAL
BRP-Powertrain
Effectivity: 125 MAX/125 Junior MAX/125 Mini
MAX/125 Micro MAX
Edition 2 / Rev. 0
Chapter 5
Page 18
December 01/2010
3.3.2) Inspect crankshaft
General - Thoroughly clean the crankshaft.
- Clean the residues of the securing medium from the conical starter
crown wheel.
Instructions See Figure 11.
Measuring the crankshaft
NOTES: If one of the wear limits CS01 or CS02 is reached, the
complete crankshaft must be replaced.
If one of the wear limits CS03, CS04 or CS05 is reached,
BRP-Powertrain recommends use of the applicable repair
kit. See also Chap. 5 Section: 3.3).
If the maximum approved stroke (CS06) of the crankshaft
is exceeded, the crankshaft must be realigned. See also
Chap. 5 Section: 3.3.3).
Step Procedure
1 Inspect the crankshaft for visible damage and traces of wear:-
- Cone/centered thread
- Bearing seats
- Running surface of the bearing
- Contact surface of the shaft seals
- Woodruff key groove.
Step Procedure
2 Measure values for the two main bearing seats (CS01), the bearing surface of
the clutch (CS02) and of the piston pin (CS03).
3 Determine the axial play of the connecting rod bearing (CS04) using a feeler
gauge.
4 Check the specific dimension (CS07).
5 Determine the radial clearance of the connecting rod bearing (CS05).
6 Check the run out of the crankshaft (CS06).
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