1997 T5C hydraulics Problem

[Rick Sladewski]

Starting to have problems and looking to narrow it down. Started about 3 weeks ago. When I stopped movement and let up the pedal or even in mid use of the buckets it would start jigging a little. Just sort of a little jerking. using the buckets or ups and downs on them did not stop it, but a hard tap on the pedal would. Now the steering has gotten hard and the jigging still happens on and off. Going down hill it has started to almost sort of free run untill I hit the pedal.
What I have checked so far is, Fluid level GOOD. NO leaks. Hoses are GOOD. Changed filter.
I figure it has to be one of the these 3. Transmission, Drive Motor, Power Steering Pump.
Any and all suggestions would be helpful as none of those things are cheap.
Thank You
Rick Sladewski

 

[agjones]

You may have a sticky, stuck relief valve. Cross your fingers, that's cheap.

If your machine will lift its rear on the stabilizers, check that the pedal is in complete control of the tram lever on the pump body.

I had a broken roll pin that was causing the lever the pedal controls to judder. Had symptoms similar to your description.

 

[Dwellonroof]

changed filter so did you also clean the suction screen inside the tank?

 

[Rick Sladewski]

changed filter so did you also clean the suction screen inside the tank?

No, and have no idea how.

 

[Rick Sladewski]

You may have a sticky, stuck relief valve. Cross your fingers, that's cheap.

If your machine will lift its rear on the stabilizers, check that the pedal is in complete control of the tram lever on the pump body.

I had a broken roll pin that was causing the lever the pedal controls to judder. Had symptoms similar to your description.

I saw that post on the spring pin. Been waiting on the rain to stop to check that one

 

[Dwellonroof]

No, and have no idea how.

Part #11

 

[Rick Sladewski]

I saw that post on the spring pin. Been waiting on the rain to stop to check that one

I did a quick check on the pedal and spring pin. The shaft will slide from transmission to outside with a 1/2 inch play, but the square metal cover is still over the plastic square. Just sliding back and forth. as for play in the pedal, I cannot see any but will have to do a disassemble to totally check the pin.

 

[Rick Sladewski]

changed filter so did you also clean the suction screen inside the tank?

So, it looks like I just drain, take off hose, and unscrew nut till the screen comes out? I know that has to be dirty, bad. Just because of some of the things the previous owner told me.

 

[Dwellonroof]

yes, you got the idea.
I cleaned mine with brake fluid and compressed air, the brake fluid dries quick.

 

[Rick Sladewski]

Suction screen filter pulled and cleaned. Was not bad at all, but a fair amount of metal shavings. About 1/4 a teaspoon stuck on the screen. Rolled pin and pedal are fine. A little play, but then the whole machine has play. Tested machine and still the same.

Now what, any more idea's.

 

[Dwellonroof]

Do you have a pressure tester? You would need at least a 3000 psi gauge but I would get a 4000 psi and a few fittings with a section of hose.

 

[Rick Sladewski]

Do you have a pressure tester? You would need at least a 3000 psi gauge but I would get a 4000 psi and a few fittings with a section of hose.

I am not following you. what am I suppose to check pressure of? The whole basic system?

 

[Dwellonroof]

It test your pump pressure also sometimes even though the suction hose looks good it can suck air.

 

[Rick Sladewski]

OK, I am tracking. I did not think about the suck air part. Now if you can only figure what else I could do with that gauge, then I MIGHT be able to justify it to the wife.

 

[Dwellonroof]

You can get a cheap hydraulic gauge

 

[Rick Sladewski]

I know, I already ordered a set with the fittings. It comes friday and Sat I should be able to get it checked out. I was kind of suspecting the gear pump any way because the last owner used hydraulic fluid.

 

[Rick Sladewski]

Gauges came in. checked everything I could think would give me a reading. (Now remember, I have hydro to both buckets, can drive forward and reverse, and can pick up tractor rear by stabilizers and front by bucket.) I checked from trans to p/s box, no reading. I checked from P/S box to both ends of steering cylinder, no reading. I connected both end of cylinder hoses to a T, no reading. At no time testing (p/s area) did the engine bog down, does anybody have a clue as to what might be bad?

 

[Dwellonroof]

check pressure at one of the loader ports and deadhead the joystick while watching the gauge.

 

[2manyrocks]

"Last owner used hydraulic fluid" instead of oil. I suggest you call one of the places that specializes in parts for these machines and ask them what goes bad when someone uses hydraulic fluid instead of oil.
They have probably seen this enough that they may be able to narrow down what you need to look for.

Once someone has put hydraulic fluid in the system, what do you have to do to clean the system enough to make it reliable again? I don't know myself, but I'd be asking what hydraulic fluid does to the entire system and what has to be done. Short of taking the whole system apart and cleaning it piece by piece, how would you flush all of the hydraulic fluid out? Does it have to be 100% cleaned of all hydraulic fluid or can you flush it enough by repeated oil changes say run it to operating temperature, cycle the systems and then change the oil. Repeat. How many times?

These are some questions I'd be asking. Especially if the residual hydraulic fluid in the system can tear something else up if it hasn't adequately been dealt with.

 

[Dwellonroof]

You might find more information on one of the Terramite groups on Facebook also. Just trying to help.