B7100 with B219 loader, filter plugging issues

[procraftmike]

This loader has the reservoir built into the RH tower tubing. The vent/breather is at the top, the pickup line with filter/screen is near the bottom. I have been working the loader pretty hard while digging some ditches. I keep plugging up the filter/screen with debris. I can't figure out what the debris are or where they are coming from. They are small and are shaped like small wood shavings, with the same type of color...light orange. Is it possible there was paint inside the reservoir that is flaking off? It is a closed system (except for the vent/breather, which is in good condition) so nothing should be getting in from the outside.

I suspect since I have been working the loader hard, some accumulations over the years are breaking loose and ending up in the filter. I can tell when it happens as I get a chug of hydraulic fluid that spews out of the filter. Then the system starts working slowly and whining until I drain and clean off the screen. I got about 2 hours of use from it between changes last time. I have cleaned the screen twice now.

Any suggestions? Thanks!!

 

[D2Cat]

Sounds like you have the problem isolated. Just keep cleaning until you don't have to any more. Then the junk is out and your back to normal.

 

[Lil Foot]

When I bought mine, the PO had lost the breather cap & was using a rag secured with a rubber band instead. When I drained it & cleaned the screen, (very dirty)
I refilled it & ran it some & drained it again to flush the old fluid out. It was very dirty again; finally figured out that the area right below the screen was full of sediment, twigs, dead possum parts & such. It apparently got stirred up every time I refilled it. Anyway, it took a long time digging, stirring, rinsing, flushing to get it all the sediment out of the tank, no troubles since. Probably not likely it's paint, I don't believe the tank (or anything else) was painted. Is it possible someone ran a solvent (or something) in the system, and it's causing the inside of the hoses or seals to flake off? (hope not!)
P.S. - I used a heavy bent wire to dig around on the bottom of the tank, through the fitting where the filter screen screws in, and used a turkey baster to keep flushing/rinsing the crud out.

 

[procraftmike]

When I bought mine, the PO had lost the breather cap & was using a rag secured with a rubber band instead. When I drained it & cleaned the screen, (very dirty)
I refilled it & ran it some & drained it again to flush the old fluid out. It was very dirty again; finally figured out that the area right below the screen was full of sediment, twigs, dead possum parts & such. It apparently got stirred up every time I refilled it. Anyway, it took a long time digging, stirring, rinsing, flushing to get it all the sediment out of the tank, no troubles since. Probably not likely it's paint, I don't believe the tank (or anything else) was painted. Is it possible someone ran a solvent (or something) in the system, and it's causing the inside of the hoses or seals to flake off? (hope not!)

The inside of a hose coming apart did cross my mind. But, the old hoses and all the new ones that I put on do not match the color of the debris I am finding. The next time I have to take it apart to clean the screen, I will find something to dig around in the bottom corners of the reservoir tube to see if there is some type of build up. I did drain the fluid when I bought the tractor last February and the screen was fairly clean at the time. I think just me working the system good is stirring things up.

 

[Tooljunkie]

Maybe fittings werent corked before painting in the manufacturing process.
Or perhaps rust scale. Check with a magnet.

 

[procraftmike]

Maybe fittings werent corked before painting in the manufacturing process.
Or perhaps rust scale. Check with a magnet.

It does not have the feel of rust. It is softer material. The particles are small enough, that it is hard to identify what they are, but they are not abrasive though.

 

[kubotasam]

I bought a B7100 a few years ago with the oil in the loader very contaminated.

1st- I pulled the screen and drained the oil.
2nd- I pulled the hydraulic cylinders off the loader and using compressed air cycled the cylinders back and forth to blow out as much oil from the cylinders as possible.
3rd- Using compressed air blew out the hoses and lines from the pump and valve.
4th- drilled a hole below the suction screen as close as I could to the weld that caps the bottom and tapped it for a pipe plug. this allowed me to flush out the bottom of the reservoir and get most all the junk and sediment off the bottom.
5th- Put it back together with a clean screen and fresh oil. Ran it for a while drained the oil again and cleaned screen. All was good.

 

[procraftmike]

I bought a B7100 a few years ago with the oil in the loader very contaminated.

1st- I pulled the screen and drained the oil.
2nd- I pulled the hydraulic cylinders off the loader and using compressed air cycled the cylinders back and forth to blow out as much oil from the cylinders as possible.
3rd- Using compressed air blew out the hoses and lines from the pump and valve.
4th- drilled a hole below the suction screen as close as I could to the weld that caps the bottom and tapped it for a pipe plug. this allowed me to flush out the bottom of the reservoir and get most all the junk and sediment off the bottom.
5th- Put it back together with a clean screen and fresh oil. Ran it for a while drained the oil again and cleaned screen. All was good.

Great idea on number 4! I have thought about doing that. I will add it to my list the next time I get the tractor to the shop for work.

 

[Big Kahuna]

There is a plug at the base of the reservoir to drain the column and I would say your low pressure return is deteriorating inside, mine was red in color and when I tore it apart it looked like reddish orange sawdust.

Big Kahuna

 

[procraftmike]

There is a plug at the base of the reservoir to drain the column and I would say your low pressure return is deteriorating inside, mine was red in color and when I tore it apart it looked like reddish orange sawdust.

Big Kahuna

I will have to take a look at the base for the plug. I replaced my low pressure line this spring. The new line is black inside/blue outside. The old line was orange on the outside, but I believe it was black inside. Maybe it deteriorated enough were some of the orange particles did get into the system. That is about the only thing I can think of. I will keep cleaning the screen when the system starts slowing down. Eventually I will have it all cleaned out.