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Crankshaft Bearing Play, Check (Determine Bearing
Play with Plastigage)
Inspect
Bearing play – crankshaft bearing cap removed.
Caution
To prevent thread from tearing when removing con-rod bearing
cap, remove grease from con-rod journal and lightly oil con-rod
bearing shell. Do not turn crankshaft.
Measure
With "Plastigage" (deformable plastic thread).
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Cut thread to bearing width and lay axially between crankshaft
journal and bearing shell (arrow). Install crankshaft bearing cap
with torque – tightening torque 50 Nm / 37 lbf. ft. + 45°
+ 15°.
Note: The bolts can
be reused for checking crankshaft bearing play.
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 Remove
Remove crankshaft bearing cover.
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Measure
Compare width of flattened plastic thread (arrow) with measuring
scale.
"Plastigage" is available for various measuring ranges.
Perm. crankshaft bearing play: 0.015 to 0.041 mm.
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Torque-angle method
Attach crankshaft bearing cap to cylinder block with new bolts
– 50 Nm / 37 lbf. ft. + 45° + 15°.
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