4.3 Checking pistons and cylinder bores

3 Crankshaft

⇒ “3.1 Crankshaft dimensions”, page 145 ⇒ “3.2 Renewing needle bearing in crankshaft”, page 145

3.1 Crankshaft dimensions

Note

♦ Risk of deformation of bearing pedestals. ♦ The crankshaft must not be removed.

♦ Just loosening the main bearing caps will cause deformation of the cylinder block bearing seats. ♦ This deformation will cause a reduction of the bearing clear‐ance.

♦ Even if the bearing shells are not renewed, bearing damage could occur due to a different bearing clearance. ♦ If the bearing cap bolts are loosened, the cylinder block must be renewed complete with the crankshaft. ♦ Measuring the main bearing clearance is not possible with normal workshop equipment.

Honing dimension

Basic dimension Conrod journal ∅ mm

47.80 -0.022 -0.037

3.2 Renewing needle bearing in crankshaft

Only vehicles with a dual clutch gearbox Special tools and workshop equipment required ♦ Counter support e.g. KUKKO 22-1 - VAS 251 621-

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