Axial Clearance Of The Crankshaft - KTM 450 SX-F Repair Manual

– If you will continue to use the crankshaft, check the crankshaft
journal for runout. Place the crankshaft on a roller stand or similar
stand and measure the crankshaft journal runout with a gauge.
Crankshaft journal runout: max. 0.15 mm
– Check the radial and axial clearance at the conrod bearing.
Radial clearance: max. 0.03 mm
Axial clearance: max. 0.80 mm
– Measure the outer dimension of the crankshaft webs.
Outer dimension of crankshaft webs = 64.0 mm ± 0.05 mm

Axial clearance of the crankshaft

– Insert the crankshaft in the right engine case half and mount the
left engine case half.
– Mount and tighten the screws at the crankcase.
– Mount the dial gauge support on the engine case and measure the
axial clearance of the crankshaft.
Axial clearance: 0.25 - 0.35 mm
– If the measured value does not correspond to the set-point value,
correct the axial clearance.
– Remove the crankshaft and pull the inner ring off the crankshaft
with the mounting tool. Now either add or remove compensating
washers on each side.
NOTE: If the axial clearance is too large, add compensating washers; if
it is too small, remove some of the washers. Make sure the crankshaft
is centered.
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