Notes on viscous fan clutch - AH20.40-P-0001-01AO

Transportation and storage 

Temperature-controlled viscous fan clutches should be transported upright. For short periods - for example for installation purposes - the clutch may be placed on the flange side, but never on the front. The cast part number of the fan should be positioned at the front (radiator side).

The bimetal strip must not be bent or damaged.

The 9-vane fan has been modified to an 11-vane fan.

Production breakpoint as of engine: 120.980-12-017 433

120.981-12-000 534

The 11-vane fan must be used only together with the strengthened coolant pump 120 200 10 01.