Main frame assembly

A method for assembling a main frame assembly of a skid steer loader machine, comprising the steps of:

• manufacturing a lower frame assembly with a pair of spaced side rails having a plurality of spaced openings disposed along the length of this side rails, a front wall extending continuously between the side rails for connection therewith, a pair of spaced and seperated transmission housings connected to the front wall and extending rearwardly therefrom a predetermined distance along a respective side rail;
• manufacturing an upper frame assembly with a pair of spaced tower assemblies, a pair of side members having front and rear end portions with each side member having a plurality of spaced openings disposed along the length of the side rails and adapted for connection with the spaced openings on the side rails of the lower frame assembly, the side members being connected to a respective one of the pair of tower assemblies and extending longitudinally therefrom, and a crossmember assembly extending between the pair of tower assemblies;
• and
• mounting the upper frame assembly to the lower frame assembly by a horizontal connection exclusively between the side members of the upper frame assembly and the respective side rails of the lower frame assembly.