Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 145/146 Engines, 146 Bodywork and Engine Overhaul Manual (1994-2001)13 · Engine overhaul: 3.0 V6 24V (AR16102)
13 · Engine

Flywheel check

Make
Alfa Romeo
Model
145/146 Engines, 146 Bodywork and Engine Overhaul Manual
Year
1994–2001
Section
Overhauling › Flywheel check
Engine overhaul: 3.0 V6 24V (AR16102)Flywheel check
  1. Measure the main journal diameter and check whether the value falls within prescriptions.
Main journal diameter
Class A (Red)59.973 ÷ 59.979 mm
Class B (Blue)59.967 ÷ 59.973 mm
Class C (Green)59.961 ÷ 59.967 mm
Hand holding a tool against a crankshaft with numbered part 1 pointing to the journal area.
  • Calculate the play between main journals and respective half-bearings and check whether the value falls within prescriptions.
Play between main journals and respective half-bearings
0.000 ÷ 0.024 mm

FLYWHEEL CHECK

  • Check whether the clutch plate surface is not scratched and that the crown teeth are neither cracked or seized. In this case, replace the crown wheel as follows:
  • remove the old crown wheel with a press;
  • clean the new crown wheel and flywheel contact surfaces carefully;
  • heat the new crown wheel uniformly at 120 - 140°C and fit in to the flywheel. Leave to cool at ambient temperature. Do not forcefully cool.

OIL PUMP CHECK

The oil pump is a complete spare part. Measure the play between the pump casing and the driven gear as shown in the figure after separating the suction device from the pump casing.

Play between pump casing and driven gear
0.025 + 0.075 mm
Hand using a tool to measure play inside an oil pump casing with gears visible.

Parts & tools for this job For 1994 Alfa Romeo 145/146

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