KAMA TS 254C Hydraulic Problems

[bluechip]

I too thought the issue was a plumbing issue, but since the backhoe has an independent hydraulic system, its impact on the tractor has to be the weight on the 3 point. I suspect the backhoe exceeds the lift capacity of the 3 point. We normally set these up by shortening the vertical links as much as possible and carrying the backhoe at the lowest 3 point setting. If the 3 point position lever is asking for the 3 point to lift, the valve will be open and the pump will maintain pressure against that line, now when you try to move your loader, the oil is diverted to the loader which begins to move the loader, at the same time, the weight on the 3 point pressurizes the return line and you have a battle to see which is stronger; the weight of the backhoe pushing against the 3 point lift cylinder or the pressure coming back from the return side of the loader valve. Quick test, see if the loader works OK with the 3 point valve in the lower position.

 

[Adellaci]

Yes it does work with the TPH lever down

 

[bluechip]

There you go. The backhoe should be used with the 3 point arms in the lowest position.

 

[Adellaci]

But when i first got it i could use both in the up position

 

[greg_g]

But when i first got it i could use both in the up position

Consider the possibility that doing so weakened the pump. As such, it may now be starting to bypass, which - if true - has effectively reduced the original TPH lift capacity (which - according to my book - is less than 900# in the first place)

//greg//

 

[DwayneB]

Consider the possibility that doing so weakened the pump. As such, it may now be starting to bypass, which - if true - has effectively reduced the original TPH lift capacity (which - according to my book - is less than 900# in the first place)

//greg//

I've got to agree with Greg here. I'd say you've weakened your pump or your o-rings in the cylinder. The pump is more likely though.

If I remember correctly that backhoe weighs around 1100lbs. The hydraulic pump is easy to rebuild and the o-ring kits just cost $25.

For $25 dollars I would get a kit and take the pump apart just to see if that's the problem.

 

[Adellaci]

Agreed