Abstract: Disclosed herein is a steering linkage system that includes a steering tie bar extending between a first and second spindle of the vehicle and a joint attached to the frame of the vehicle. The system further includes a first steering link attached to and extending between a first steering location that is on or connected directly to the joint and a second steering location that is on or connected directly to the steering tie bar. The system includes a second steering link attached to and extending between a third steering location on or connected directly to a middle of the first steering link located between the first and second steering locations, and a fourth steering location on or connected directly to a pitman arm of the vehicle. Further disclosed is a vehicle having the steering linkage system, and a kit for providing the steering linkage system to a vehicle.

Abstract: A push arm control assembly (30, 30a) for use with bulldozer (10) having blade (12) removably mounted to a pair of laterally displaceable push arms (14) on opposite sides of the bulldozer.The push arm control assembly includes at least one elongated, relatively lightweight, control member (32, 56, 59) having a length dimension substantially spanning the distance between push arms (14) and having a strength sufficient to enable lifting of push arms (14) as a unit. A pair of arm coupling assemblies (33) are provided on control member (30, 30a) and are adapted for coupling to each of push arms (14) for manipulation of the push arms (14) as a unit. In the preferred form, the control arm assembly (30, 30a) positions the push arms (14) a distance less than the lateral distance between push arms (14) when push arms (14) are coupled to blade (12).

Abstract: An apparatus for adjusting spacing between a pair of crawler tracks of a working vehicle such as a backhoe. This apparatus is capable of moving the crawler tracks independently of each other. When one of the crawler tracks is moved laterally outwardly of the vehicle, the other may be maintained in an inward position.

Abstract: The invention is an improvement in a pivot assembly of the type having an inner, generally spherical bearing and an outer race mounted for movement on the bearing surface and defining a bearing-race sliding contact area. The improvement comprises an enclosed grease chamber above the sliding contact area and in gravity flow communication with such area. The assembly has a lower annular passage which can either be left open to permit grease and dirt to flush from the sliding contact area or such passage may be closed with a dynamic seal. The invention helps exclude dirt from the sliding contact area and helps assure that such area is properly lubricated.

Abstract: Improved support structure for the blade of a bulldozer and the like wherein a first push arm is attached for swiveling movement to the tractor frame near the rear end thereof and extends into swiveling connection with the blade and a second push arm is attached to the opposite side of the tractor frame for swiveling movement relative thereto and extends to the blade and is pivotally connected thereto. A second end of the second push arm has a pair of spaced pivotal connections to the blade to provide lateral stability between the blade and the second push arm. An adjustable strut mounted on the first push arm is pivotally connected with the blade. A tilt cylinder is mounted on the second push arm and is connected with the blade. Actuation of the tilt cylinder in cooperation with the strut causes tilting of the blade. Bending stresses are avoided in the push arms due to the swivel connection between the push arm and the tractor frame and the swivel connection between the first push arm and the blade.

Abstract: A mechanism for angling, pitching, and tilting a dozer blade utilized in a conventional bulldozer wherein the blade is pivotally connected by an angling frame to the forward ends of push arms. A tilt-pitch control assembly for the blade is provided including a pitch cylinder, a pitch-tilt cylinder, a torsion bar, and drag link connections. The pitch cylinder and pitch-tilt cylinder are each pivotally attached to the torsion bar by the drag link connections. If a load is applied against one side of the blade, the load is transmitted to the pitch cylinder or pitch-tilt cylinder closest to the loaded side of the blade thereby causing some movement of that cylinder. The cylinder which is under load transmits any movement through its respective drag link connection into a turning movement on the torsion bar.

Abstract: PCT No. PCT/US79/00763 Sec. 371 Date Sept. 24, 1979 Sec. 102(e) Date Sept. 24, 1979 PCT Filed Sept. 24, 1979 PCT Pub. No. W081/00897 PCT Pub. Date Apr. 2, 1981The push arms of a conventional bulldozer assembly are mounted on a track roller frame of a track-type tractor by bearing assemblies, each including a pair of bearing caps. One of the bearing caps is welded to the push arm, thus requiring that it be cut-off upon replacement thereof. In addition, the bearing cap welded to the push arm must be selectively hardened to avoid stress cracking in the heat affected zone of the weld. This invention overcomes the above problems by providing a bearing assembly (16) which includes a pair of separable first and second bearing caps (17, 17') which are secured together and to the push arm by common fasteners (28).