PLATE 4628092 - Caterpillar

SystemOne Undercarriage
The following check is for Caterpillar SystemOne Undercarriages that have the center tread idler.
Illustration 1 g01160800
D3G, D4G, D5G Track-Type Loader front idler (SystemOne)Adjustment shim (center tread idler)
Park the machine on a hard, flat surface. Make sure that the bottom track is tight and that the measured grouser lies directly below the track idler shaft.
Measure the height (A) from the flat ground surface to the grouser tip that is centered below the track idler shaft.
Maintain the grouser height (rise) to the following dimensions.
(A) Front IdlersMinimum - 0.5 mm (0.0197 inch)Maximum - 6 mm (0.236 inch)
Repeat Steps 1 through 3 in order to determine the proper height dimension under each front idler.
If the height is out of the recommended specification, consult your Caterpillar dealer for detailed information about adjustments to the center tread idler. Adjustments will be required when the wear on the link and the roller system is at 40% wear and at 80% wear.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.