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How to remove excavator bushes?

2022-08-18



How to remove excavator bushes?


The first challenge when replacing the bushes in the arm of your excavator is to remove the old bushes.

Typically if you are at the point of removing them, then they are worn out so it doesn't matter what damage you do to the old bushes but you really want to preserve the integrity of the excavator arm at all costs.

We have pulled together a few tips and tricks from plant fitters to help you out!

1) Brute Force! A good old hammer and bar is often enough on smaller excavators especially if the bushes are quite worn out. Be sure to use a bar that is larger than the internal diameter of the bush but smaller than the outside diameter. If you are doing it regularly some engineers find it handy to create a stepped tool for the various sizes of bush.

2) Weld a stub into the bush (even a large blob of weld can work), and this allows you to put a bar through the bush and knock it out

3) Weld around the radius of the bush - this really applies to larger bushes and the idea is that as the weld cools it shrinks the bush enough to allow it to be removed easily

4) Cut the bush out - using an oxyacetylene torch or similar it is possible to cut a slot into the wall of the bush which then allows the bush to shrink and be easily removed. A word of caution on this - it is very easy to go too far and cut into the arm of the excavator and cause expensive damage!

5) Hydraulic Press - probably the safest option but we have put it last in the list, as not everyone has access to the equipment necessary for this.

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