Just a quick dive in to the "Freezer Trick"
As we know it is not really a trick just uses the expansion/contraction properties of most materials.
Just like water, metal and plastic expand when heated and contract when cooled.
The wear ring will shrink faster than the aluminum pump housing due to material and thickness.
So you freeze the whole housing to remove the wear ring.
To replace freeze the new wear ring but not the pump, the pump can be warmed if needed.
Same thing works on the stainless ring, but by heating the pump.
Heat the aluminum around the wear ring and it will expand faster than the stainless ring.
This is due to the pump housing heating faster than the ring, if needed cool the ring with a damp rag to
keep it from expanding as the pump is heated.
This can be used in the work shop on a lot of equipment and task. I have found this is the best way to
remove or install bearings and bearing races if the are hard to remove.
As we know it is not really a trick just uses the expansion/contraction properties of most materials.
Just like water, metal and plastic expand when heated and contract when cooled.
The wear ring will shrink faster than the aluminum pump housing due to material and thickness.
So you freeze the whole housing to remove the wear ring.
To replace freeze the new wear ring but not the pump, the pump can be warmed if needed.
Same thing works on the stainless ring, but by heating the pump.
Heat the aluminum around the wear ring and it will expand faster than the stainless ring.
This is due to the pump housing heating faster than the ring, if needed cool the ring with a damp rag to
keep it from expanding as the pump is heated.
This can be used in the work shop on a lot of equipment and task. I have found this is the best way to
remove or install bearings and bearing races if the are hard to remove.
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