Vauxhall Workshop Service and Repair Manuals

 

Crankshaft Bearing Clearance, Check (Determine Bearing Clearance with Micrometer and Inside Micrometer)   Notice:  The crankshaft is removed. The fastening bolts can be reused to check the crankshaft bearing play.     Install, Connect    Attach crankshaft bearing cap with crankshaft bearing shell to cylinder block - tightening torque 50 Nm / 37 lbf. ft. + 45 ° + 15 ° .     Measure    The average crankshaft bearing diameter is determined using an inside micro-meter at points I, II and III and then calculated.   Formula for calculating the average crankshaft bearing diameter:   I + II + III     3     Example:   I   57.972 mm     II   57.981 mm      III   + 57.984 mm      173.937 mm   ÷ 3 = 57.979 mm     The average con-rod bearing diameter is 57.979 mm.

  Measure   

The crankshaft journal diameter is measured with a micrometer at points I and II and then calculated.   Formula for calculating the average crankshaft bearing journal diameter:   I + II     2     Example:   I   57.962 mm     II   + 57.964 mm      115.926 mm   ÷ 2 = 57.963 mm     The average crankshaft journal diameter is 57.963 mm.   The crankshaft clearance is calculated from the difference in diameter between the crankshaft bearing bore and crankshaft journal.   Example:   Average crankshaft bearing diameter   57.979 mm   Average crankshaft journal diameter   - 57.963 mm     0.016 mm     Permissible crankshaft bearing clearance: - see Technical Data.