Tc30 power steering fluid leak

[AnnaB264]

My TC30 sprung a power steering fluid leak from one of the metal pipes circled in the pic. (It got crimped by one of the arms holding the body cover).

Can I cut out the broken section and replace it with a piece of hose? Or do I need to replace the whole pipe? How should I go about this?

 

[toot77]

The 2 lines at the front (in your circle) are lines from the steering valve to the steering cylinder. The line slightly behind heading down at a 45 degree angle is the line from the pump to the steering valve. These 3 lines are all high pressure lines so any hose repair would need to be capable of handling the system pressure. I would first look for a used line from one of the used part sources. I suspect the tubing is metric, but you might try a hydraulic shop to see if repair fittings are available.

The only 1 of those 4 steering lines that does not see system pressure is the one not in your circle that turns and goes up to return to the reservoir.

 

[nyone]

Follow the line..if it goes to the cylinder and has crimped on fittings to hose its high pressure. If it has hose clamps or goes to the resivor then its low pressure.

 

[AnnaB264]

Follow the line..if it goes to the cylinder and has crimped on fittings to hose its high pressure. If it has hose clamps or goes to the resivor then its low pressure.

Okay, thanks. So I guess a high pressure line can't be fixed and has to be replaced?

 

[dieselscout80]

There was a thread here on fixing steel hydraulic lines via brazing etc.

I think it might be fixable but you’re going to have to make that call.

A hydraulic shop might be able make a replacement.

 

[thclimer]

Depending where the leak is I wonder if you could splice the section with something like this, you'll definitely need to determine the correct outer diameter of the tubing.:

Dorman 800-206 High Pressure Compression Union Rated For 5000 PSI 10mm - Walmart.com

 

[AnnaB264]

Thanks! Does anybody happen to know just what the psi is of the fluid going through the pipes?

 

[toot77]

The steering relief valve setting spec is 1420-1500psi on a T1520. I would expect a TC30 to be same or similar

The spec for my 1520 is 1420-1520 psi. These specs are from the New Holland service manuals.

 

[AnnaB264]

The steering relief valve setting spec is 1420-1500psi on a T1520. I would expect a TC30 to be same or similar

Thank you!

 

[nyone]

Depending where the leak is I wonder if you could splice the section with something like this, you'll definitely need to determine the correct outer diameter of the tubing.:

View attachment 5159518


Dorman 800-206 High Pressure Compression Union Rated For 5000 PSI 10mm - Walmart.com

That's a good idea!

The brand Lenz also make these style of compression hydraulic fittings.

 

[dieselscout80]

Here’s a thread on brazing lines.

https://www.tractorbynet.com/forums/threads/brazing-a-hydraulic-line.68293/page-3#post-7336130

The compression repairs would be slick.

 

[boatmoter]

My TC30 sprung a power steering fluid leak from one of the metal pipes circled in the pic. (It got crimped by one of the arms holding the body cover).

Can I cut out the broken section and replace it with a piece of hose? Or do I need to replace the whole pipe? How should I go about this?

only if it's a return line. if it's high pressure it will never hold