Checking the crankshaft (Fiesta 2)

Check the crankshaft for visible signs of wear. The roughness of the bearing journal surfaces may not exceed 1.5 Rt. The diameters of the main and connecting rod journals must be measured using a micrometer, and the bearing clearances - with "Plastigege" strips (Fig. 2.74). The main and connecting rod journals must be in the same selection group of diameters. If even just one journal has a diameter different from the required one, all journals of the shaft must be ground to the nearest repair dimensions.



The middle bearing takes up longitudinal forces. This means that in this bearing the crankshaft is mounted axially.

The largest axial shaft clearances for different engines can be:

• in engine 1.1 - 0.08-0.29 mm
• in 1.4i/1.6i engine - 0.09-0.30 mm
• in diesel engine 1.8 - 0.09-0.37 mm

The crankshaft has several repair sizes. If the inspection reveals the need to grind the journals of the shaft, this work should be entrusted to specialists from the technical service workshop.

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