Over 20 years of experience in sales of replacement and aftermarket hydraulic components and parts, we are always receiving many inquiries from our customers as: Oh, dear, the original product label or model code information label was missing or unclear, I can't get the right and useful model code or displacement information any more, can you help me out? Because of this label missing, they don't know how to order the correct repair parts or brand new replacement pumps or motors. 

It is really an awsome trouble. The machine has broken down, but we are short of necessary and enough pump model code information to fix it!

Maragon Hydraulics has huge database of various hydraulic pump and motor parts dimensions, we would like to provide some help. Following is the "Dimension Cross Reference Data Sheet For Various Of Piston Shoes". You could please simply measure some key dimensions of your piston shoes in hand such as piston shoe dia "D" and length "L1", and then check it with our piston shoe dimension corss-reference data sheet. 

If possible, you can find the exact piston same as ours.Congratulations, seems now problems resolved!  The left column "Model" number showed there is mayber the model code your pump is. For example, your pump code could be "PVB5". You can order the correct brand new pump parts or components to make the broken units to be fixed with the needed model code "PVB5". If not, don't worry, free feel at any time to Contact Our Engineer right away to see if we can do something. We would like to do our best!

What? Your piston looks not same as what showed in this page,  it is some other kinds of piston with two rings? Ok, please click on " Parts Dimension Cross Reference Sheet - Piston With Rings".

Maybe, the answer you are looking for is over there!

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How to identify a hydraulic pump or motor by the dimension of the piston shoe?