METHOD FOR REMOVING AN ECCENTRIC WORM GEAR DRIVE OF A CRUDE OIL DELIVERY PUMP AND CRUDE OIL DELIVERY PUMP
The invention relates to a method for removing the drive head (1) of the eccentric worm gear drive (2) of a crude oil delivery pump (3). To remove the drive head (1), a maintenance clamp (23) is placed on the drive shaft or polished rod (6) in the area of the lantern (14). By means of the maintenance clamp (23), the complete movable pumping unit of the crude oil delivery pump (3) above the crude oil well (8) is kept above the surface (10) of the ground. The maintenance clamp (23) according to the invention performs the holding tasks which are carried out by the drive clamp (18) during normal operation.