Eaton Hydraulic Motor #4631 Rebuilt and tested. 21 Spline Shaft, common Reid Mix Motor. Hydraulics is a specialized skill. Suggest using a hydraulic technician. The item “Eaton Hydraulic Motor #4631 Rebuilt 21 Spline Shaft” is in sale since Wednesday, August 14, 2019. This item is in the category “Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Hydraulic & Pneumatic Motors”. The seller is “vgw937″ and is located in Alden, New York. This item can be shipped to United States.