RADIATOR GP 3685281 - Caterpillar

Illustration 1 g03595138
Undercarriage
(1) Rear Idler
(2) Rear Track Roller Frame
(3) Front Track Roller Frame
(4) Track
(5) Front Idler
(6) Major Bogie
(7) Minor Bogie
(8) Track Roller The final drives and bevel gears are located on a common center line. The steering and brake groups are located on the common center line also. Removal and installation of the power train modules has been simplified. The final drives are raised above the abrasive wear and packing conditions of the operating environment, which is another advantage. Also, there is a reduction of shock loads through many of the power train components. When the implements are suddenly engaged, and ground impact of the tractor are forms of shock loads. In this elevated location, the final drives do not support any of the weight of the machine. This action permits the undercarriage and suspension to be made resilient.Four major bogies turn on sealed, lubricated cartridge pins. The front major bogie supports an idler and a minor bogie. The rear major bogie supports an idler and a minor bogie. Each of the two major bogies in the middle of the roller frame supports a minor bogie. Each minor bogie supports two track rollers. The minor bogies also pivot on sealed, lubricated cartridge pins. The idlers turn on sealed, lubricated shafts.Eight rubber pads are used in pairs on each roller frame. A rubber pad is installed on top of each major bogie. The four rubber pads are installed on the bottom of the roller frame. The rubber pads are installed in alignment with the rubber pads on the major bogies. The rubber pads control the amount of movement of the major bogies. Because the rubber pads are flexible, mud and debris will be removed from the rubber pads during operation. This resilient undercarriage arrangement will keep more track on the ground at all times. This arrangement will decrease wear. The arrangement also increases operator comfort. Sealed, lubricated tracks are standard equipment.