Sundstrand Sauer Danfoss Series 20 Rotating Group Identifying Parts Crucial Sides

On the diagram it shows which parts are more crucial for running than others. When excessive use, higher temperatures or even contamination hurts some parts more than others.
The parts that are marked non crucial could have marks, nicks or rough surfaces and still maintain the integrity of the part to do it’s job.
The more crucial parts, if damaged and not taken care of properly will result in repairing alot of internal parts or sometimes you may have to just buy a whole new pump or motor.
Alot of things come into play when making sure your internal parts work properly.
So heed some of the advise, it will save you time and money in the long run.
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