Caterpillar Tractor Co.

Lawrence R Cline

Theodore B Hogg

A track roller assembly including a track roller frame (12) defining a tunnel, a pair of spaced, elongated rails (70, 72) extending through the tunnel, a stop (26) at one end of the tunnel, a spring recoil assembly (20) within the tunnel in abutment with the stop and supported by the rails and including a housing (28) containing a compression spring (30) and having an opening (32) opposite from the stop and a movable plate (36) accessible through the opening and abutting the spring, a hydraulic adjuster assembly (22) within the tunnel and supported by the rails in abutment with but not attached to the housing and including a closed hydraulic chamber (100) with a movable piston (104) extending therefrom and through the opening to abut the movable plate, and an idler yoke (24) within the tunnel supported by the rails and abutting, but not attached to the adjuster assembly opposite of the spring recoil assembly.

Track adjuster and guard

Relates to segmented track guide sections as an integral part of a track roller frame. The track guide sections are a plurality of bars located adjacent and generally parallel to the opposite sides of an endless track and are removably secured to the track roller frame. This allows replacement of individual bars as they wear down.

Track guide assembly

A spring recoil assembly (20) for use in a crawler type track roller frame (12) includes an elongated tubular housing (28) (46) having opposite open ends, a stop (36) at least partially closing one of the ends, a compression coil spring (30) within the housing and abutting the stop, a radially inwardly directed lip (48) on the other end of the housing having an inner diameter greater than the outer diameter of the spring, and an additional stop (52) within the housing other end and with, the first stop, sandwiches the spring within the housing. The additional stop has a periphery sized to freely pass into the housing past the lips. A retainer (60,62) is positioned within the housing between the additional stop (52) and the lip (48).

Recoil spring assembly

A track roller assembly of the type having a shaft with a track roller journalled thereon and end collars on the ends of the shaft facing the track roller. Keys received in keyways and bolts associated therewith simultaneously prevent relative rotation between the end collars and the shaft and secure the end collars to a track roller frame.

Track roller assembly

A vehicle frame to undercarriage mounting arrangement is disclosed including a vehicle frame having a member with a substantially upstanding planar bearing surface thereon, an undercarriage for supporting the frame including a substantially upstanding planar bearing surface thereon which is engageable against the corresponding surface of the frame member, and a coupling including interlocking projection and recess means edgewardly disposed on the undercarriage and the frame member for maintaining the bearing surfaces in abutting force transmitting engagement and with the coupling resisting lateral separation thereof.

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Oswego, IL, United States of America

Lawrence R Cline