WASHER 3G4780 - Caterpillar

SystemOne Undercarriage
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Elevated undercarriage system
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, B) 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 Idlers Minimum - 5 mm (0.2 inch)Maximum - 16 mm (0.6 inch)
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Remove the cover for the track roller frame.
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Remove the bolt that blocks the key. Remove the key. Note: Use 305-3015 Spanner Wrench to assist with adjustments.
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Rotate the eccentric system in order to move the position of the idler. Note: Move the key to the next counterclockwise position. Dimension (A) will increase when the eccentric system is rotated counterclockwise. Each position increases the distance by 6 mm (0.2 inch).
Add MPGM to the grease fitting on the sliding block.
Install the key. Install the bolt.
Install the cover for the track roller frame.
Repeat the steps 1 through 3.a in order to ensure that the dimension of each idler is acceptable. Consult your Caterpillar dealer for detailed information about adjustments to the center tread idler.See Operation and Maintenance Manual, "Track - Check/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.