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Just before Christmas I purchased a 4020 for the purpose of removing the PTO and HVFB for my 4018. The HVFB blower chamber was both eroded and rotted, the brackets / mounting areas were twisted and cracked. I had to cut very deep into the Vacuums brackets with a cutting wheel to weaken them to the point I could straighten them out. I then opened the cuts up into a bevel with a grinding wheel welded the areas up and ground the welds flush. All the brackets look like brand new now and fit together nicely with no binding at all. To fix the eroded area, I went to a local sheet metal house to have a 10 gauge (much thicker than the original) piece of sheet metal cut and curled to fit over the eroded area. All the repairs are finished and once the warmer weather is here I plan on sandblasting, fill, prime, paint and replace the decal and it will be ready to go this spring. The pictures below show the repairs so far, once it is painted I will post pictures of the finished bagger.
The good old craftsmen screwdrivers, they were the closest things I had available



The good old craftsmen screwdrivers, they were the closest things I had available



