SUPPORT AS 2190467 - Caterpillar

Illustration 1 g01445774
(1) Track (2) Piston motor ( hydrostatic) (3) Drive sprocket (4) Axles (5) Idler (6) Tensioner (7) BogiesThe undercarriage of the 247B2 and the 257B2 Multi Terrain Loaders are mounted to the lower frame through the axles (4). The axles allow each side of the undercarriage to flex independently of the other side.The undercarriage consists of the following components: track (1), piston motors ( hydrostatic) (2), drive sprockets (3), axles (4), idlers (5), tensioner (6) and bogies (7) .The piston pump ( hydrostatic) provides oil flow to the piston motors. The piston motors are directly connected to the drive sprockets. When the motors turn, the drive sprocket turns with the motor. The drive sprocket engages the lugs on the track and the track rotates around the idlers, the bogies, and the tensioner.The bogies (7) are mounted directly to the frame of the undercarriage. The bogies and the idlers will wear with use. Refer to the Operation and Maintenance Manual, "Bogie and Idler - Inspect/Replace" for the correct specifications.The tensioner (6) adjusts the tension on the track. Refer to the Operation and Maintenance Manual, "Track (Rubber) - Inspect/Adjust" for the proper procedure for adjusting the track tension.If the track tension is not adjusted properly any of the following items may occur:
The track may slip.
Damage to the drive lugs on the track.
The track may come off.
The track may wear prematurely.
Power loss.
The bearings may fail.