Big-end bearing play, check (measure bearing play with Plastigage)
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Big-end bearing play, check (measure bearing play with Plastigage)
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1.
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Mark the big-end bearing cap fitting position (1) - remove the big-end bearing cap from the connecting rod.
Caution
Clean the big-end journal and oil the big-end bearing shells. This is necessary so that the plastic thread does not break when removing the big-end bearing cap. Do not turn the crankshaft.
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2.
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Lay out Plastigage (workable plastic thread) over the whole width of the big-end journal.
Tightening torque/angle tightening
Big-end bearing cap on connecting rod - tightening torque 25 Nm + 30°.
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1.
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Remove the big-end bearing cap again. Compare the width on the flattened plastic thread (arrow) with the scale.
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2.
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Permitted big-end bearing play: 0.019 to 0.071 mm.
Note
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Do not confuse millimetres and inches on the scale when reading the value.
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1.
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Clean and oil the big-end journal and big-end bearing shells.
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2.
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Fit the big-end bearing cap on the connecting rod, observe the big-end bearing cap fitting position.
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3.
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Fit the big-end bearing cap onto the connecting rod with new bolts - tightening torque 25 Nm + 30°.
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