3RRL
Super Member
- Joined
- Oct 20, 2005
- Messages
- 6,931
- Tractor
- 55HP 4WD KAMA 554 and 4 x 4 Jinma 284
I do have another update for you.
I managed to mount the double pilot operated check valve (DPOCV) which I bought from Mark over at CCM. Like you saw on my backhoe leg's mounting, those have Metric fittings and steel tubes.
The hydraulic cylinder I bought is a 2-1/2" bore by 6" stroke, and it has a 1-1/2" rod. I chose it for the rod diameter for strength, since a small cylinder would work the rise and fall of the linkage. But I didn't want to bend the rod by hitting rocks or the severe bumps I go over. Since it eventually takes all the rear load/weight of the cutter and the new frame and linkage, it had to be beefy.
Well, it has #8 SAE ports. The banjo bolts for the DPOCV are British 3/8" BSPP (parallel thread) so I had to find an adapter. Of course I could not find one, but did find a male JIC #8 to female BSPP, but no "O" ring to seal it. So I lathed off the JIC taper and bored out the cylinder ports themselves to fit an "O" ring, which I put on the neck of the JIC fitting (now an SAE fitting
). The red thing in the port is a plastic threaded plug to keep chips out.
I fit it so it was in there perfect and tightened the fitting until the shoulder hit the port.

I managed to mount the double pilot operated check valve (DPOCV) which I bought from Mark over at CCM. Like you saw on my backhoe leg's mounting, those have Metric fittings and steel tubes.
The hydraulic cylinder I bought is a 2-1/2" bore by 6" stroke, and it has a 1-1/2" rod. I chose it for the rod diameter for strength, since a small cylinder would work the rise and fall of the linkage. But I didn't want to bend the rod by hitting rocks or the severe bumps I go over. Since it eventually takes all the rear load/weight of the cutter and the new frame and linkage, it had to be beefy.
Well, it has #8 SAE ports. The banjo bolts for the DPOCV are British 3/8" BSPP (parallel thread) so I had to find an adapter. Of course I could not find one, but did find a male JIC #8 to female BSPP, but no "O" ring to seal it. So I lathed off the JIC taper and bored out the cylinder ports themselves to fit an "O" ring, which I put on the neck of the JIC fitting (now an SAE fitting
I fit it so it was in there perfect and tightened the fitting until the shoulder hit the port.



