Measuring Crankshaft End Play
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- Install the Magnetic Base Dial Indicator, or equivalent to the cylinder block, with the dial indicator plunger against one of the counterweights of the crankshaft.
- Firmly thrust the end of the crankshaft first rearward then forward. This will line up the rear crankshaft bearing and the crankshaft thrust surfaces.
- With crankshaft pushed forward, zero the dial indicator. Move crankshaft rearward and read the end play measurement on the dial indicator. An optional method is to insert a feeler gauge between the crankshaft and bearing surface and measure clearance. See CRANKSHAFT table.
- If the correct end play cannot be obtained, inspect crankshaft thrust wall surface or surfaces for wear and/or excessive runout.
- Inspect crankshaft for binding. Turn crankshaft to check for binding. If crankshaft does not turn freely, loosen crankshaft bearing bolts and studs, one cap at a time, until the tight bearing is located. The following condition or conditions could cause a lack of clearance at the bearing: Burrs on crankshaft bearing cap. Foreign matter between crankshaft bearing and block or crankshaft bearing cap. A faulty crankshaft bearing.