Radial Clearance Of The Camshaft Bearings; Camshaft Bearing Bridges - KTM 450 SX-F Repair Manual

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Radial clearance of the camshaft bearings

– Insert the camshafts in the cylinder head without actuating the
valves.
– Position the plastigauge measuring strip 600.29.012.000 on the
camshaft at the bearing positions
Note: follow the instructions provided by the plastigauge measuring
strip manufacturer.
– Mount the camshaft bearing bridge
rollers and O-ring.
– Tighten the oiled camshaft bearing screws from the inside to the
outside to 14 Nm.
Note: do not turn the camshafts while you measure.
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– Remove the screws from the camshaft bearing bridge
– Remove the camshaft bearing bridge.
– Do not lose the needle roller and O-rings.
– The width of the plastigauge measuring strips
bearing clearance. Compare this width with the information on the
measuring strip.
Radial clearance of the camshaft friction bearing: 0.029 mm - 0.053 mm
– Remove the screws on the camshaft bearing bridge
– Remove the camshaft bearing bridge.
– Do not lose the needle roller.
– Remove the camshafts.
– Clean all parts.

Camshaft bearing bridges

– Inspect the parts for damage or wear.
– Replace any damaged or worn parts.
Note: camshaft bearing bridges are only available together with the
cylinder head.
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+ together with the needle
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Wear limit: 0.055 mm
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indicates the
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