Oil & Fuel Bypass oil filter for those that care

[J_J]

AMSOIL - Ea By-Pass Oil Filters (EaBP)

$38.00 Filter element

This is the bypass oil filter and system that I use on two of my Dixie Choppers. It works because common sense was used in it's design. The while puprose of these filters is to filter a small amount of oil over a long time, lasting about 6 to 10 regular oil filter changes. It filters with a 1 micron rating.

If you read the article, I think you will see that it is a good thing.

Now, you may balk at the high price, but if it will clean the oil as advertised, then I think it is worth it.

Bypass oil filters can be put on almost anything.

 

[MossRoad]

Looks interesting... annnnd, I have some questions. :laughing:

"At normal operating RPMs the EaBP Filter will filter all of the oil in a typical five quart sump in less than 10 minutes."

I have 40 qts of oil, so does that mean it will filter my hydraulic system every (approximately) 80 minutes of operation?

The filter is $40.00. How much is the plumbing?

 

[J_J]

This system as is, is used in the motor oil system. However, I see no reason that one could not use a 1 micron bypass filter in the suction line, parallel with the 10 micron filter. I would think the bypass filter is only filtering about 5 % of the total oil drawn by the pump, and on our machines, sometimes it is not drawing very much fluid from the tank. Since out system is a closed loop system, the same fluid flows in a loop and is mixed with make up fluid . The reason for the makeup fluid, is some of the fluid is cooling and lubricating the hyd wheel motors, and feeding all four wheel motors case drain lines back to the pump case, and then out to the hyd cooler and then to tank. I would not know how to figure the time it would take to filter all the fluid in the tank. You are adding filtered fluid to unfiltered fluid, so the total volume would increase, probably on a logarithmic scale.

 

[J_J]

David, do you know how long it takes your normal hyd filter to filter 100 % of the fluid? It would be easy to figure that out if it were a steady draw, but the charge pump is only filtering about 10 % or the total fluid used by the VSP pump, and add fluid as necessary to load the circuit, and if you are moving real slow, time to filter will increase.

 

[smartguyz]

This certainly seems straightforward enough. I'd be curious where it could be mounted. There isn't a whole lot of room in the 'tub' on a 425. Any ideas?

-Rob

(I'm very familiar with these. I own a Chevy diesel truck, and the truck guys talk about bypass filters ALL the time... due to concerns about soot, etc.)

 

[MossRoad]

David, do you know how long it takes your normal hyd filter to filter 100 % of the fluid? It would be easy to figure that out if it were a steady draw, but the charge pump is only filtering about 10 % or the total fluid used by the VSP pump, and add fluid as necessary to load the circuit, and if you are moving real slow, time to filter will increase.

Well, my guess is it never filters all of it.

The main PTO pump and the steering/lift/aux PTO pump are always on. They are constantly sucking oil from the reservoir at a large GPM rate. They never turn off, ever. Only a very small amount of oil is being sucked through the filter as it goes to the makeup of the charge pump on the variable volume pump for the drive system. With the huge flow of oil the two PTO pumps pull, my guess is there is probably a lot of eddy currents in the flow in the hydraulic tank that prevent a lot of the oil from ever reaching the filter at all. I think the filter is just there to protect the variable volume pump and not really to filter all of the hydraulic oil in the entire system.

 

[BobRip]

Moss, I think the variable volume pump is the most sensitive pump to dirt so this would help.
If you put one of these on the PTO connections and had a bypass around it for most of the flow, you could get a lot of filtering. When there is no attachment, you could just connect it to the PTO connections. Then you turn the PTO on all of the time. Then when you are using the PTO, you run the fluid through this filter with bypass and to the attachment. Plenty of room to install it out front.

 

[MossRoad]

Moss, I think the variable volume pump is the most sensitive pump to dirt so this would help.
If you put one of these on the PTO connections and had a bypass around it for most of the flow, you could get a lot of filtering. When there is no attachment, you could just connect it to the PTO connections. Then you turn the PTO on all of the time. Then when you are using the PTO, you run the fluid through this filter with bypass and to the attachment. Plenty of room to install it out front.

I think that is a good idea. Although I can not mount anything out front, as I frequently force my way through brutal brush and trash. It would have to be in some protected location.

 

[BobRip]

I think that is a good idea. Although I can not mount anything out front, as I frequently force my way through brutal brush and trash. It would have to be in some protected location.

Could be removable. You probably don't need to do this all the time.

 

[cqaigy2]

Could be removable. You probably don't need to do this all the time.

Oooo, i can see a quick connect to the PTO circuit going on here.