302.5 Mini Hydraulic Excavator Caterpillar

Tightening the Tracks

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Illustration 1	g00523702

1. Remove the cover plate for the track adjustment valve.
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   Illustration 2	g00523707

2. Wipe the fitting before you add grease.

3. Add grease through the valve fitting until the correct tension is reached.

4. Operate the track back and forth in order to equalize the pressure.

5. Check the amount of sag. Adjust the track, as needed. Refer to Operation and Maintenance, "Track Adjustment - Inspect".

6. Replace the cover plate for the track adjustment valve.

7. Repeat the same procedure for the other track.

Loosening the Track

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Personal injury or death can result from grease under pressure. Grease coming out of the relief valve under pressure can penetrate the body causing injury or death. Do not watch the relief valve to see if grease is escaping. Watch the track or track adjustment cylinder to see if the track is being loosened. Loosen the relief valve one turn only. If track does not loosen, close the relief valve and contact your Caterpillar dealer.

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Illustration 3	g00523707

1. Loosen the filler valve carefully until the track begins to loosen. One turn should be the maximum.

2. Tighten the filler valve to 34 N·m (25 lb ft) when the desired track tension is reached.

3. Operate the track back and forth in order to equalize pressure.

4. Check the amount of sag in the track. Adjust the track, as needed. Refer to Operation and Maintenance, "Track Adjustment - Inspect".

5. Repeat the same procedure for the other track.

If the correct adjustment cannot be achieved consult your Caterpillar dealer.