Con-rod Bearing Play, Check (Determine Bearing
Play with Plastigage)
Remove
Mark installation position (1) of con-rod bearing cap –
remove con-rod bearing cap from con-rod.
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Caution
To prevent the strip from tearing when removing the con-rod
bearing cap, remove grease from the con-rod journal and lightly oil
con-rod bearing shell. Do not turn the crankshaft.
Measure
Route Plastigage (malleable plastic strip) over the entire width
of the con-rod bearing journal. Plastigage is available via the
catalogue "Opel/Vauxhall Workshop Equipment".
Torque-angle method
Attach con-rod bearing cap to con-rod – 35 Nm / 26 lbf.
ft. + 45° + 15° – the bolts may be used again to
check the con-rod bearing play.
Measure
Remove con-rod bearing cap again. Compare width of flattened
plastic thread (arrow) with measuring scale.
Permissible con-rod bearing play: 0.019 to 0.063 mm.
Note: When reading
the value, do not confuse millimetres and inches on the measuring
scale.
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Install
Clean con-rod bearing journal and con-rod bearing shell and
lubricate lightly.
Attach con-rod bearing cap with new fastening bolts to con-rod
– note installation position of con-rod bearing cap –
tightening torque 35 Nm / 26 lbf. ft. + 45° + 15°.
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