View Full Version : Hydraulic piston
09-17-2009, 05:24 PM
I'm welding about a 2-1/2" piston attaching the yoke to the end of the piston. I'm extending the piston all the way out to prevent melting the seals, clean and bevel both pieces at about a 40degree angle, about 3/4"+- deep. Tig the root, maybe 2 passes, stick the rest with E11018. Oh and a little preheat before the root. Any body out there see any problems with my procedure?????
09-20-2009, 07:21 AM
Yup don't do it or it may end up like this one in the pic that i had to fix after someone tried to weld it. Why can't you screw it on like its supposed to be. Just wondering...Bob
09-21-2009, 04:48 PM
That was ugly, the job turned out really well i should have took some pictures but it was beer time when we got done. this one didn't have threads it was the main cylinder on the backhoe. I could see the original bevel that was on the piston which makes me wonder how good the original weld was. it had been broken for a while because part of the crack was rusted. cleanlyness is next to good weldlyness Ialways say.
that and having real big hammers helps too.....Does for me anyway:D