DISC 2B9748 - Caterpillar

1. Drive the machine forward in the direction of the idlers.2. Stop when one track pin is directly over the front carrier roller.3. The correct adjustment is 25 to 40 mm (1.0 to 1.5 in.) of sag half way between the front carrier roller and the idler.
To prevent possible personal injury, never visually inspect the relief valve to see if grease is coming out. Always look at the track to see if it has become loose or tight.
Open the relief valve one turn only.
If the dimension between the end of the track roller frame and the flange on the idler hub (as shown) is less than 16 mm (5/8 in.) do not adjust the track.
4. Remove the plate, covering the fill and relief valves, on the track roller frame.5. If the track is too loose, add grease in the fill valve until the track sag is correct.6. If the track is too tight, turn the relief valve counterclockwise one turn and let grease come out until the adjustment is correct. It will be necessary to move the machine back and forth to get the pressure equal.7. Check the adjustment again.8. If the adjustment is correct, tighten the relief valve and replace the cover plate.