303C CR, 303.5C CR, 304C CR and 305C CR Mini Hydraulic Excavators Track Adjustment - Adjust Caterpillar


Track Adjustment - Adjust
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303C CR, 303.5C CR, 304C CR and 305C CR Mini Hydraulic Excavators [SEBU8021]
UNDERCARRIAGE
TRACK ADJUSTER & RECOIL GP
303C CR, 303.5C CR, 304C CR and 305C CR Mini Hydraulic Excavators Track Adjustment - Adjust
303.5E2, 304E2, 305.5E2 and 305E2 Mini Hydraulic Excavators Track Adjustment - Inspect
1.1. Tightening the Tracks
2.1. Loosening the Track

------ WARNING! ------

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 AVSpare dealer.


Tightening the Tracks



    Illustration 1g00825999

  1. Remove the cover plate for the track adjustment valve.


    Illustration 2g00825994

  2. Wipe fitting (1) before you add grease.

  3. Add grease through fitting (1) 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.

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

  7. Repeat the same procedure for the other track.

Loosening the Track



    Illustration 3g00825999

  1. Remove the cover plate for the track adjustment valve.


    Illustration 4g00825994

  2. Loosen fitting (1) carefully until the track begins to loosen. One turn should be the maximum.

  3. Tighten fitting (1) to 34 N·m (25 lb ft) when the desired track tension is reached.

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

  5. Check the amount of sag in the track. Adjust the track, as needed.

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

  7. Repeat the same procedure for the other track.

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