Abstract: A mounting assembly (22) for an inside arm C-frame (18) of a bulldozer blade (26) is provided and includes a pair of brackets (30,30, 130,130) joined together by a tractor belly guard (32). Each bracket (30,30, 130,130) is pinned to the tractor frame (12) by a main pin (50) in the upper portion thereof and has a trunnion (52,152) at the lower portion thereof for connection to the arms (20,20) of the C-frame. The forward portions (60,162) of the brackets (30,130) are pinned (74) to the tractor frame (12) in a way as to constrain only that force known as torque or moment of rotational force, generated about said main pin (50). The belly guard (32) can be pivoted down out of the way for servicing the tractor.

Abstract: A suspension system for a track-type tractor includes a shaft disposed through apertures of unitary frame members adjacent opposite sides of the vehicle, with track frames pivotally mounted to extended ends of the shaft, the shaft being rotatable and movable axially relative to the frame members.

Abstract: A frame of a vehicle includes a pair of laterally spaced beams, each including upper and lower members and first and second sidewall means fixed thereto. A saddle extends between the beams, each end of the saddle including an end plate which is positioned in an opening of an associated sidewall means of a beam, and fixed to that beam.