Ford Tractor Dynamo 22 Amp C40 Lucas Type 22756. For models 2000 2600 3000 3600 4000 & 5000. Part reference 3109419R91, 81816845, C7NN10000C & 22756. 12v 22 amp Dynamo direct replacement for the Lucas C40 22756 Dynamo. These dynamos come with the tacho drive mounted on the back, the fan and pulley will need to …