hydraulic line connections

[greg_g]

That would do it.

Not sure how though. The TaiShan TPH flow should be through hard lines. The Koyker supply/return is through rubber hoses. I can't find compatible fittings on my TaiShan that would cross-connect TPH and FEL. Makes me wonder if perhaps there have been some post-purchase alternations to the OP hydraulic system.

I bought a bunch of colored zip ties and marked each hose with corresponding colors.

Excellent idea, gonna put two more pair on mine. Koyker uses colored zips on the lift arm and bucket lines, but not on the supply/return lines. As you saw before, I lost track of which was which after they came out of a flexible conduit. Colored ties will avoid that mistake in the future.

//greg//

 

[greg_g]

I got it figured out finally. Turns out I had my return line and 3 pt lines reversed causing the mayhem.

It's unclear how that could happen. You've never replied to my posts about the rear PTO pump. Do you perhaps have a TaiShan version with two engine driven pumps instead?

//greg//

 

[lakespirit]

If there's a PTO pump, it's inside the sump, where I don't venture into.

It's 7degrees out now, with a forecast for 15 below tonite, so we'll see how everything REALLY works moving all the stinking snow we already got this week.

 

[greg_g]

If there's a PTO pump, it's inside the sump, where I don't venture into.

So - you don't actually know where your hydraulic pumps are?

I've been formulating my responses around the assumption that you had the standard TaiShan configuration. Look at the attached photo. Look above the PTO output shaft. That thing behind and slightly above the red PTO safety shroud - the one with fittings and hoses on both sides - that's the hydraulic pump that runs my TPH and FEL. The first QD on the right is FEL supply, the QD forward and the the right of that one is the FEL return

//greg//

 

[lakespirit]

I know that's a pump, but didn't know whether there's a second one.

 

[greg_g]

The second one will be up on the engine, but it's just for power steering

//greg//

 

[lakespirit]

It's been a while, but I continue to have issues with the hydraulic system. I am going through o-rings like toilet paper. They are viton, so shouldn't deteriorate from oils. Another wierd thing is that now the only way I can raise the TPH is by having the levers in the UP position while tilting the loader bucket in or raising the bucket???

 

[greg_g]

I can only speculate, but first off I'd say you got your hands on a bad batch of O-rings. Viton by the way, is designed for ULSD fuel systems. I don't know how they react in hydraulic fluid. Second, I'm bettin' some of the O-ring trash has blocked or impeded flow somewhere. If I'm not mistaken, your PTO pump powers both the TPH and the loader, the engine driven pump is just for steering - right? If yes, then I'd say you've got blockage where the loader line feeds the TPH - or vice versa.

//greg//