KTM 2011 690 SMC AUS, Repair Manual

Page: 126 / 229

16 ENGINE
124
–
Repeat the operation on the opposite side.
–
Make sure that the new inner bearing race is installed flush.
Info
After changing the crankshaft bearing and the conrod bearing, measure the
axial play of the crankshaft.
Finishing work
–
Measure the axial clearance of the crankshaft and the balancer shaft. ( p. 124)
16.4.10 Measuring axial clearance of crankshaft and balancer shaft
300126-10
–
Insert the crankshaft and balancer shaft in the right engine casing.
Info
Do not forget the dowels.
–
Mount the left engine casing.
–
Mount and tighten the screws.
Guideline
Screw, engine case M6 10 Nm (7.4 lbf ft)
–
Mount the dial gauge support on the engine case and measure and note the axial
clearance of the crankshaft.
Guideline
Crankshaft - axial clearance 0.15… 0.25 mm (0.0059…
0.0098 in)
» If the measured value does not equal the specified value:
–
Remove the crankshaft.
–
Remove the crankshaft bearing inner ring. ( p. 121)
–
Calculate the thickness of the compensation shims.
–
Add or remove compensation shims equally on both sides.
Info
If the axial clearance is too small, remove compensation shims.
If the axial clearance is too large, add compensation shims.
–
Install the crankshaft bearing inner ring. ( p. 123)
300164-10
–
Mount the dial gauge support on the engine case and measure and note the axial
clearance of the balancer shaft.
Guideline
Balancer shaft axial clearance 0.05… 0.20 mm (0.002… 0.0079 in)
» If the measured value does not equal the specified value:
–
Remove the balancer shaft.
–
Calculate the thickness of the compensation shims.
–
Add compensation shims to the ignition side only.
Info
If the axial clearance is too small, remove compensation shims.
If the axial clearance is too large, add compensation shims.
16.4.11 Cylinder - Nikasil® coating
302591-10
Nikasil
® is a surface protection layer for a coating method developed by the Mahle
company. The name is derived from the two materials used in this method - a layer of
nickel, in which silicon carbide (a particularly hard substance) is embedded.
The most important advantages of the
Nikasil ® coating are the excellent heat conduc-
tivity resulting in better performance, less wear, and low cylinder weight.