Vauxhall Workshop Service and Repair Manuals

 

Crankshaft Bearing Clearance, Check (Determine Crankshaft Bearing Clearance Using External Micrometer and Inside Micrometer)   Notice:  Crankshaft removed.     Install, Connect    The fastening bolts can be reused to check the crankshaft bearing play. Attach crankshaft bearing cap with crankshaft bearing shell to cylinder block - tightening torque 50 Nm / 37 lbf. ft. + 60 ° + 15 ° . Do not turn crankshaft.     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   54.972 mm     II   54.981 mm     III   + 54.984 mm       164.937 mm   ÷ 3 = 54.979 mm     The average crankshaft bearing diameter is 54.979 mm.

  Measure   

The crankshaft journal diameter is measured with a micrometer at points I and II and then calculated.   Formula for calculating the average con-rod bearing journal diameter:   I + II     2     Example:       I   54.962 mm     II   + 54.964 mm       109.926 mm   ÷ 2 = 54.963 mm     The average crankshaft journal diameter is 54.963 mm.   The crankshaft clearance is calculated from the difference in diameter between the crankshaft bearing bore and crankshaft journal.   Example:     Average crankshaft bearing diameter   54.979 mm   Average crankshaft journal diameter   - 54.963 mm     0.016 mm     Permissible crankshaft bearing clearance: - see Technical Data.