Inspecting belt pulley/vibration damper for axial and radial runout - AR03.30-P-1600-01SXI

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ENGINE 642 in MODEL 207, 212, 218, 221

CHECK VALUES FOR BELT PULLEY/VIBRATION DAMPER

Number	Designation			Engine 642
BE03.30-P-1001-02D	Permissible difference at vibration damper	Radial runout	mm	0.4
BE03.30-P-1001-02D	Permissible difference at vibration damper	Lateral trueness	mm	0.4

Fig 1: Identifying Dial Indicator (001 589 53 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Dial Indicator Holder (363 589 02 21 00)

Courtesy of MERCEDES-BENZ USA

Bolt dial gauge holder (03) onto timing case cover.
Insert dial gauge (04) indicator holder (03).
Position tracer pin (05) of dial gauge (04) at measuring point (B).
Rotate belt pulley/vibration damper (62) by hand, inspect lateral trueness.

Fig 3: Rotating Belt Pulley/Vibration Damper
Courtesy of MERCEDES-BENZ USA
Position measuring pin (05) ) of dial gauge (04) at measuring point (A).
Rotate belt pulley/vibration damper (62) by hand, inspect smooth operation.