Run-out of drive plate with overload protection, checking and adjusting

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Remove compressor → Compressor, removing and mounting (vehicles with 4 or 6-cyl. engine) .

Fig 1: Run-Out Of Drive Plate With Overload Protection, Checking/Adjusting

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Clean flange at drive plate - A -.
Install dial gauge - B - with dial gauge bracket - C - (e.g. special tool, bracket 387) to compressor.
Install measuring leads 1 2 of dial gauge - D - to flange of drive plate - A - with a pre-tension of approx. 1.0 mm.
Give compressor drive unit - E - several turns.

Specified value: Run-out deviation less than 0.21 mm (run-out of dial indicator, difference between lowest and highest measured value max. 0.2 mm)

If run-out deviation exceeds 0.2 mm, loosen bolts at drive plate → Drive plate with overload protection, removing and installing and readjust drive plate.