302.5 Mini Hydraulic Excavator Machine Systems Caterpillar

Removal Procedure

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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 1	g00576535

1. Remove two bolts (1) and washers from the panel. Remove panel (2) from the undercarriage frame.

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Illustration 2	g00576537

Note: Refer to Operation and Maintenance Manual, SEBU7203, "Track Adjustment - Inspect/Adjust" when you are attempting to adjust the track.

2. Loosen grease fitting (3) carefully until the track begins to loosen. One turn should be the maximum. When the track tension is fully released, grease fitting (3) should be tightened. Tighten the grease fitting to a torque of 34 N·m (25 lb ft).

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Illustration 3	g00577462

3. Use a wood block to support the track, as shown above. Remove the nut and bolt (4) from the track carrier roller.

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Illustration 4	g00577465

4. Remove left hand track carrier roller (5) with a brass punch.

5. Repeat Steps 1 through 4 for the right hand side of the track carrier roller.

Installation Procedure

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Illustration 5	g00577465

1. Use the block to support the track, as shown above. Install left track carrier roller (5) with the rubber hammer.

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Illustration 6	g00577462

2. Install bolt (4) and the nut to the track carrier roller. Tighten the bolt.

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Illustration 7	g00576537

3. Make sure that grease fitting (3) is properly tightened before the track is adjusted. Tighten the grease fitting to a torque of 34 N·m (25 lb ft). Refer to Operation and Maintenance Manual, SEBU7203, "Track Adjustment - Inspect/Adjust" when you are attempting to adjust the track.

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Illustration 8	g00576535

4. Install panel (2) to the undercarriage frame with washers and two bolts (1). Tighten the bolts.

5. Repeat Steps 1 through 4 for the right hand side of the track carrier roller.