respectively finally a hydraulics access hole 108 a is provided for supplying hydraulics to the hydraulic tilt cylinder 81 via hydraulic tubes or pipes not shown linkage pins 110 and 111 are assembled as shown in fig4 after the first ends of the leveling links 82 a and 82 b and the hydraulic tilt cylinder 81 are in place for mounting to the removable linkage pin support 100 fig6 is a detailed view of the load bearing areas 120 and 122 in this particular configuration the load bearing areas 120 and 122 contain threaded attachment holes 121 a and 121 b for rigidly attaching the removable linkage pin support 100 to the load bearing areas 120 and 122 the attachment holes 121 a and 121 b are configured in a pattern that matches that of attachment holes 109 a and 109 b each of the attachment holes 121 b includes a countersunk portion 121 b u2032 and a threaded portion 121 b u2033 for receiving the attachment bolts 130 b the threaded portions 121 b u2033 are smaller than parallel to and concentric with the countersunk portions 121 b u2032 the countersunk portions 121 b u2032 have diameters equal to those of the attachment holes 109 b and are sized to fit the outer.