Arc weld
Veteran Member
I have a Cat backhoe on my 931B that has a leaking rotary swing cylinder. I know someone on here has repaired one off an MF backhoe in the past. I think they're at least a little bit similar. I've read the top o-ring leaking is common. Is it OK to just fix the o-ring or is it best to go through the whole thing? Other than the leak, it seems to work fine.