Inline hydraulic filter

[ponytug]

Carl,

That is a delta of 50psi, i.e. 3000psi in, 2950psi out. It is designed to prevent a plugging filter from rupturing anything catastrophically.

In general, a filter with a bypass is preferable to one without because of the safety issues.

All the best,

Peter

On thing that confuses me about the Burden filter is that the bypass is set at 50 PSI? Or am I mis-reading the info.

 

[J_J]

To all. I think some of you think you are drawing clean fluid from your reservoir, it should be, but guess what. The steering ,lift, and PTO circuits draw directly from the tank, and dump their expended fluid back to tank including everything that has come loose or broken, etc. I have said this before, the variable speed pump and wheel motors should have the most clean fluid, because the charge pump maybe filters 3 to 5 GPM only and it has to supply makeup make up fluid or flush the tram pump, and it is a 10 micron filter, or whatever you put in as a replacement. If your machine has wheel motors with case drains, the drain lines are connected to the tram pump case, and the tram case fluid with the wheel motor fluid is sent back to the cooler and back to tank. So in essence, overall, all the fluid is being filtered filtered over time. So putting an in-line filter, be it 25 or 10 micron, it will give you something better than what you had. You could even go so far as to put a 10 micron and a 25 micron in parallel. The pressure line goes to a tee and then to each filter, which has a tee on the output and back to tank. The theory is that if you keep the tank fluid clean and free of water, that is about the best you can do. Put one of those filter on the output of the steering valve return line. There again, you are improving the filtration of the complete system.

If you want to protect the PTO motor, put the filter before the motor. If you want to keep the steering and lift circuits clean, put one before the steering valve.

I am not not slamming Bobs filter, because it is a good idea. These little in-line filters are less expensive, and you can break them down and check whether they are contaminated.

The filter cart assembly is also a good idea. Some of you use your PT quite a bit, and others only use their PT once a week or month.

Years ago, I had a 22 HP Kohler with a regular filter and a 1 micron bypass filter. They were in parallel, so the regular filtered it's usual capacity, and the 1 micron would filter would also be filtering. When a Kohler dealer finally had to break the engine down, there was no sludge, and he said the inside looked like new. Now the 1 micron filter cost about $40,00, but it paid off in extended engine life.

 

[Bob999]

Bob, why did you select an expensive high pressure filter for the mower return line? What would be wrong using this one, for example.

Did you have a concern that something could plug downstream causing the filter to rupture?

I mounted the filter on the mower so there is a quick connect between the filter and the tank. Quick connects are a significnt restriction and I was concerned that the filter would see some significant pressure during normal operation. I was also concerned about the (remote) possibility that the return quick connect could be blocked/disconnected and the filter would see full pressure.

I mounted the filter on the mower because I couldn't find a place to mount it on the tractor. I wasn't comfortable using a low pressure filter unless I could mount the filter so there would be a direct connection to the tank without restriction or quick disconnect fittings.

 

[J_J]

I mounted the filter on the mower so there is a quick connect between the filter and the tank. Quick connects are a significnt restriction and I was concerned that the filter would see some significant pressure during normal operation. I was also concerned about the (remote) possibility that the return quick connect could be blocked/disconnected and the filter would see full pressure.

I mounted the filter on the mower because I couldn't find a place to mount it on the tractor. I wasn't comfortable using a low pressure filter unless I could mount the filter so there would be a direct connection to the tank without restriction or quick disconnect fittings.

On the subject of QD's. If you use a 1/2 QD on a 1/2 in hose, yes , you will have some restriction. The way around this is to install the next larger size, and that would be 3/4 in ,in this situation. Even if there is some blockage, or the QD doesn't connect, the pressure relief will activate. I believe the filter can take about 3000 psi. Other filters can take more.