Allis Chalmers 160 FEL plumbed wrong

[Zebu Fellenz]

Hello,

Our (new to us) Allis Chalmers 160 arrived a few days ago and I've started working through some of the little quirks it has. The first one I'd like to tackle is the hydraulic systems. The way it is plumbed right now the pressure side of the pump feeds into the valve for the FEL, and is split where it goes in with another line that goes on to the rest of the system.

I believe what needs to be done is this line going to the rest of the system needs to be tied into a power beyond port on the valve for the FEL, but I'm not sure if there is a PB port on the valve.

I have attached some pictures of the valve as it is connected right now, hopefully there is a way to fix this without having to buy a new valve. There are what look like two ports not being used on this valve that are blocked right now, possibly one of these is a power beyond?

Thanks,

Erik

Looking at this picture the hose on the left is the return to sump, the next four are feed lines for the FEL, and the one on the right is the pressure line that is split with one of the lines going on to the rest of the system.

 

[J_J]

I do see a safety problem, and that is with the use of galvanized fittings in the hyd system.

Some of the FEL valves have markings on them to indicate IN, OUT, PB, P1, P2, etc. Some valves also have 2 sets IN/OUT ports for top or bottom mount. The valves should all be in series, and that is the purpose of the PB, POWER BEYOND.

 

[Zebu Fellenz]

I do see a safety problem, and that is with the use of galvanized fittings in the hyd system.

Some of the FEL valves have markings on them to indicate IN, OUT, PB, P1, P2, etc. Some valves also have 2 sets IN/OUT ports for top or bottom mount. The valves should all be in series, and that is the purpose of the PB, POWER BEYOND.

Agreed on the safety problem with the fittings, this tractor has quite a few "farmer fixes" in addition to this that will be dealt with this winter.

This valve is marked for IN, OUT, and 1,2,3,4, this covers all the open ports.

I didn't see any ports marked PB for power beyond.

Thanks

 

[Opti-Mist]

The major issue with galvanized fittings in a hydraulic system is the contamination and resulting damage caused by flaking. Black iron just rusts on the outside but the inside is preserved in oil.

 

[kennyd]

The major issue with galvanized fittings in a hydraulic system is the contamination and resulting damage caused by flaking. Black iron just rusts on the outside but the inside is preserved in oil.

While both of those statements are true, The real issue is the pressure, they are not rated for 3000PSI! Especially the ones you get nowadays from Lowe's or Home Cheapot that are cast in China.

 

[J_J]

Here is some data relating to galvanized pipe.

http://www.fwwebb.com/pdf/WARD_FittingsSpecs.pdf

Smaller pipe sizes can handle higher pressure, but not at 3000 psi.

 

[Willl]

Getting back to what the OP originally asked...

I believe what needs to be done

Why do u feel the need to change it ?

Are u having problems with the way it is now ?

 

[Zebu Fellenz]

Getting back to what the OP originally asked...



Why do u feel the need to change it ?

Are u having problems with the way it is now ?

Oops, looks like I forgot to explain what the problem is...

The way it is plumbed right now you can only operate the three point, and the rear remotes is if you drop the bucket on the FEL and hold the lever in that position blocking flow through the valve, and forcing the fluid through the rest of the system, I think this is because the valve is (open center?) and all the fluid flows through the valve back to the sump instead of on to the rest of the system, taking the path of least resistance.

Hope this explains it.

Thanks

 

[Willl]

Hope this explains it.

It does and I believe your correct on your thoughts as to why.

Any casting # on that valve ?

 

[J_J]

Zebu Fellenz,

Is the FEL working correctly? Is the 3pt working correctly. If they are. that will need some explaining. If you tee into a OC circuit, the fluid from the FEL will go to tank, and fluid from the 3pt will go to tank. The fluid will take the route of lowers resistance, and if you operate one valve, the fluid should go through the other valve and then to tank.

If it is a CC circuit, you can tee in just about anywhere.

Is there a valve that you can shut off the 3pt? If you can do that, then you have provided the resistance that a OC circuit needs. All the fluid will than flow through the FEL valve, or used by the work ports, and then go to tank.

You might also have a splitter type valve that splits the flow into equal circuits, and the excess from either valve would go to tank. You might have a 60/40 split on 10 GPM, which would mean that the FEL would get 6 GPM and the 3pt would get 4 GPM.