Pivot pin assembly

A pivot pin assembly for pivotal mounting of a bucket on a boom arm, said bucket having a pair of apertured brackets secured thereto and said boom arm having a transverse bore, said assembly comprising:

• bearings retained in said transverse bore;
• a pivot pin having an enlarged tapered head extending within the aperture of one of said brackets, a body rotatably mounted in said bearings, and a distal end associated with the aperture of the other of said brackets;
• a cup-like thrust collar disposed on the distal end of said pin, said thrust collar having an externally tapered wall and a radial wall enclosing one end of the thrust collar;
• a pair of internally tapered split wedge collars disposed in said bracket apertures and respectively engaging said pin head and said thrust collar;
• a pair of end plates disposed respectively outwardly adjacent said tapered split wedge collars;
• means interconnecting the pin and said end plates to draw said split wedge collars into locked engagement respectively with said pin head and said thrust collar within said apertures;
• and
• adjustable means associated with said thrust collar for selectively fixing the spacing between said radial wall of said thrust collar and the distal end of said pin.