Well Done Brad, you got there in the end, I've had to use metric Orings at times to get the cross section, especially on the hydraulics, your right the replacement Orings just are the quality they should be, i'm busy playing catchup on youtube, working all hours at the moment keep up the good work Barry
Thanks, Barry. I don't think the gaskets or bearings are as good as the original. You have quite a remodel on your hands, it's coming along nicely. The o-ring works until too much pressure is applied, and then it leaks. The connector is easier to get to but still aggravating.
Yes, the o-ring seals until enough pressure is applied to the connection to break the seal, and then it needs replaced. The thicker o-ring should handle the load.
Interesting Brad. I had the same issue with my 880. I have a three way valve instead of the connector and struggled to find a good fitting 5/8" o-ring. I tried two, the first 3/32" which measured at 104 thou and second a 1/8" which measured 138 thou. The 3/32" doesn't seem to give a positive enough fit when the 3 way valve is pushed on and the 1/8", whilst it protudes nicely around the connector, was too thick to allow the 3 way valve to be pushed on. So I need a 7/64" if such a thing exists. The DB parts manuals are great, but I wish they would specify the o ring thickness rather than just the ID.
It is strange that the thickness isn't given in the manuals. I have 227 hrs on the o-ring, and it started leaking. It was worse when a load was applied, of course. It's not a metric measurement on the ID. The thickness is critical. I take the parts, if possible, to a local seal and hose company. They measure the parts as well as seals, and I get the ones above and below. They're not expensive, and it makes reassembly better. Thanks David
Well Done Brad, you got there in the end, I've had to use metric Orings at times to get the cross section, especially on the hydraulics, your right the replacement Orings just are the quality they should be, i'm busy playing catchup on youtube, working all hours at the moment
keep up the good work
Barry
Thanks, Barry. I don't think the gaskets or bearings are as good as the original. You have quite a remodel on your hands, it's coming along nicely. The o-ring works until too much pressure is applied, and then it leaks. The connector is easier to get to but still aggravating.
@@TECH.274 try the metric one they seam a little thicker in the cross section
That ought to do it Tech! 😁
Yes, the o-ring seals until enough pressure is applied to the connection to break the seal, and then it needs replaced. The thicker o-ring should handle the load.
Interesting Brad. I had the same issue with my 880. I have a three way valve instead of the connector and struggled to find a good fitting 5/8" o-ring. I tried two, the first 3/32" which measured at 104 thou and second a 1/8" which measured 138 thou. The 3/32" doesn't seem to give a positive enough fit when the 3 way valve is pushed on and the 1/8", whilst it protudes nicely around the connector, was too thick to allow the 3 way valve to be pushed on. So I need a 7/64" if such a thing exists. The DB parts manuals are great, but I wish they would specify the o ring thickness rather than just the ID.
It is strange that the thickness isn't given in the manuals. I have 227 hrs on the o-ring, and it started leaking. It was worse when a load was applied, of course. It's not a metric measurement on the ID. The thickness is critical. I take the parts, if possible, to a local seal and hose company. They measure the parts as well as seals, and I get the ones above and below. They're not expensive, and it makes reassembly better. Thanks David