953C Track-Type Loader Caterpillar

SystemOne Undercarriage

The following check is for Caterpillar SystemOne Undercarriages for Track-Type Loaders that have the center tread idler.

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Illustration 1	g01156843
953C Track-Type Loader front idler (SystemOne) Adjustment shim (center tread idler)

1. Park the machine on a hard, flat surface. Make sure that the bottom track is tight. Make sure that first link bushing (2) lies directly below the track idler shaft (1). This ensures that the measured grouser tip is at the lowest point. Measured grouser tip (3) is the first grouser tip on grouser track shoe (4).

2. Measure the height (A) from the flat ground surface to grouser tip (3) that is first on grouser track shoe (4) below bushing link (2) and track idler shaft (1).

3. Maintain the grouser height (rise) to the following dimensions.

   1. (A) Front Idlers

      Minimum - 0 mm (0 inch)

      Maximum - 16 mm (0.63 inch)

4. Repeat Steps 1 through 3 in order to determine the proper height dimension under each front idler.

5. For machines with the SystemOne Undercarriage, remove the shim between the track roller frame and the idler guard when the wear on the link and roller system is at 50%.

Consult your Caterpillar dealer for detailed information about adjustments to the center tread idler.

See Operation and Maintenance Manual, "Track Adjustment - Adjust" for information on needed track adjustments.

Reference: See Operation and Maintenance Manual, "Reference Material" for publications and Special Instructions on removal and installation of SystemOne Track, as needed.