Adding diverter valve to rear blade - Woods RB 96.60

ciser123 · May 26, 2020

Richard - thank you for the pics and description of what you've done with yours. That sounds like it would work well with mine.

johnnyvol - thanks for the information. I wouldn't have had a clue otherwise, but a cushion valve makes sense!

metalbender - thank you for your thoughts.

After finding a parts manual as suggested (at least one shown on Messicks) it looks like the offset and tilt cylinders are identical, if both are supplied. I may just try swapping the cylinder to the tilt function and moving the ratcheting bar to the offset for the time being. If I end up not using the offset much (I don't think I will, but I may be surprised), I'll just stick with two cylinders and not need anything. Thanks again for the thoughts!!

Redlands Okie · May 26, 2020

johnnyvol said:
You guys know more about your blades than I do but that's a cushion valve on top of the OP's blade. It's there to take the brunt of a sudden impact and save the cylinders from damage.

Had not thought of that as a possibility. Thanks

Zebrafive · May 27, 2020

johnnyvol said:
You guys know more about your blades than I do but that's a cushion valve on top of the OP's blade. It's there to take the brunt of a sudden impact and save the cylinders from damage.

Agreed, those are cushion valves. You beat me to posting

Fallon · May 28, 2020

Zebrafive said:
Agreed, those are cushion valves. You beat me to posting

Those do look a lot like crossover relief valves. However for a crossover relief valve to work, fluid from one end of the cylinder has to move to the other end. The 2 ends of a double acting cylinder are different volumes due to the rod taking up room. They work good for plows with a pair of single acting cylinders, like on snow plows.

So it's doesn't make sense to mount crossover relief valves on that blade with only double acting cylinders mounted to it that won't get any benefit from those valves.

Zebrafive · May 28, 2020

Fallon said:
Those do look a lot like crossover relief valves. However for a crossover relief valve to work, fluid from one end of the cylinder has to move to the other end. The 2 ends of a double acting cylinder are different volumes due to the rod taking up room. They work good for plows with a pair of single acting cylinders, like on snow plows.

So it's doesn't make sense to mount crossover relief valves on that blade with only double acting cylinders mounted to it that won't get any benefit from those valves.

If he wants to take them off, I'll take them. They have to be better than nothing and if fluid is coming from the rod end to the head end, there should be plenty of space, so good to go, in one direction.

ovrszd · May 28, 2020

I actually thought they might be DPCVs? But maybe not. I'm certainly no hydraulic expert.

Zebrafive · Jun 2, 2020

ovrszd said:
I actually thought they might be DPCVs? But maybe not. I'm certainly no hydraulic expert.

Neither am I, so what is DPCV?

Fallon · Jun 2, 2020

Zebrafive said:
Neither am I, so what is DPCV?

Differential pressure control valve. It basically doesn't let any fluid flow until a certain pressure is reached. A cylinder gets locked into place & can't move due to a leaky control valve. When full line pressure is applied from the valve the DPCV pops open & let's things work. It prevents float from working as a negative side effect in some cases. But it also prevents cylinders from creeping when your valves suck.

ovrszd · Jun 2, 2020

Fallon said:
Differential pressure control valve. It basically doesn't let any fluid flow until a certain pressure is reached. A cylinder gets locked into place & can't move due to a leaky control valve. When full line pressure is applied from the valve the DPCV pops open & let's things work. It prevents float from working as a negative side effect in some cases. But it also prevents cylinders from creeping when your valves suck.

Yep. I know it as a Dual Pilot Control Valve. But again, I ain't no expert.

You nailed the description of what it does, regardless of what it's called!!!

Fallon · Jun 2, 2020

ovrszd said:
Yep. I know it as a Dual Pilot Control Valve. But again, I ain't no expert.

You nailed the description of what it does, regardless of what it's called!!!

That's what I thought too, but that's what popped up when I googled DPCV as I wasn't quite sure. Could be wrong on the name either way.