The crankshaft must be cleaned with kerosene or a suitable solvent and dried, preferably with compressed air.
Check the main journals and crankpins for wear, scratches, spalling and cracks.
Wear of the connecting rod journal is accompanied by a distinct metallic knock during engine operation (especially at low speeds), as well as some pressure loss in the lubrication system.
Wear of the main journals is accompanied by strong engine vibration and knocking, which increase with increasing engine speed, and also by a loss of pressure in the lubrication system.
If the crankshaft has been ground, check the oil holes on the crankshaft for burrs. If there are, remove them with a velvet file.
Measure the diameter of the main and connecting rod journals with a micrometer, compare the results with the required ones. If the crankshaft journals are damaged, tapered, out of round or excessively worn, the crankshaft will need to be ground.
Check the seal surfaces on both sides of the crankshaft for wear and damage. If the gland "rubbed" recess on the surface of the crankshaft, you need to contact a specialist.
If required, check the TDC sensor wheel teeth for damage. If it is clearly necessary to replace a wheel, take it to a Vauxhall/Opel repair shop, as the crankshaft may need to be balanced before being installed on the engine.
Visitor comments