Excavator Bucket Repair

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The wear plates on this bucket were obviously worn.  The way the wear bars were installed from the factory was not the best way.  When the bars are installed parallel with the flow of the material they do not protect bucket well.

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We removed the damaged wear bars and installed new wear bars perpendicular to the flow of material.  The reason this configuration is better is the dirt (in this case) will get caught between the the bars and protect the bucket bottom.  The material then is wearing against the hardened wear bars and dirt.

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Excavator bucket repair in Santa Cruz

I repaired this “Remu” type excavator bucket for BlueIron, Inc.  They had a job in Santa Cruz so I traveled there to work on the bucket.

The blade was obviously worn,

I cut it off and replaced with a new one.

The grinders were also worn and I hardfaced using tungsten powder.

Hardfacing is the overlaying of a harder material than the parent metal to help the existing metal last longer.  There are several types of hardfacing.  Some are designed to withstand abrasion which you would use in an application where the piece was subject to constant wear from dirt, sand, or gravel, etc.  Others are designed for impact resistance which would be used in applications where the piece is used in crushing or chipping.  The product I used is designed for high wear applications, it is a very specialized type of hardfacing and provides for excellent wearability.

Repair Grapple on Excavator

 

This grapple is used on an excavator at a transfer station.  Vito Trucking out of Modesto uses it to load a green waste grinder.  They called because it was cracked.  It was critical that their excavator be up and running soon.  Two of us were able to work on it and it took about 12 man hours to complete.  We were able to get them back on track and they were using the excavator that evening. 

I gouged out the crack and in so doing the two pieces of the pivot pin boss seperated, they were only held together by about 1/4″ of material.  It was very important that the two be put back together tightly so there were no gaps between the two pieces of material and so there would not be any added stress from the two arms being different lengths.

This is a picture of the grapple from the inside and you can see quite extensive cracking.

Cracks welded up from the inside.

Pivot pin boss welded up.