Re. Walker 4 ton model 884 Jack- Voris Hydraulics is the parts supplier. Google it and print out the list you need. The model 884 is an awesome jack but very heavy about 250 pounds . It extends 24 inches and pumps up in 5 strokes. The handle has 3 positions note the excess wear on the handle and...
Parts list is available on-line, kit is expensive, piston has leather cup seal 2-1/4 in diam.
Pump leather is about 1 inch can`t recall. I just finished mine Model 884 4 ton. Kit was 50.00. Now its over 100.00. you need new check valve balls and a couple of springs . Don`t try it if you are...