Hydraulic line replacement

[bones774]

Hi, I just noticed i need to replacing a leaking line. It's a terramite T5 CBL and i know they are outta business, I imagine the hoses are somewhat standard. This will be my first replacement and just looking for safety tips. The access to hose seems somewhat straight forward. The hoses are wrapped in what looks like old type corded fire hose, not sure if that was original or the previous owner did that, it's all frayed but i do have old fire hose. Can I determine what hose i need before even starting or do i need to remove and bring to a shop. I would rather have job done all at one time, remove and replace at same time. I'm concerned about high pressures in the line upon removal, any safety tips? Also how should i have hydraulic cylinder positioned when removing.
anything I forgot please let me know.
Thanks

 

[wore out]

Hi, I just noticed i need to replacing a leaking line. It's a terramite T5 CBL and i know they are outta business, I imagine the hoses are somewhat standard. This will be my first replacement and just looking for safety tips. The access to hose seems somewhat straight forward. The hoses are wrapped in what looks like old type corded fire hose, not sure if that was original or the previous owner did that, it's all frayed but i do have old fire hose. Can I determine what hose i need before even starting or do i need to remove and bring to a shop. I would rather have job done all at one time, remove and replace at same time. I'm concerned about high pressures in the line upon removal, any safety tips? Also how should i have hydraulic cylinder positioned when removing.
anything I forgot please let me know.
Thanks

IF the line is leaking badly and the unit has been shut down for a while it's unlikely to have "high pressure" in it.

However, it's wise to be careful.

Be sure all levers have been cycled with the engine"OFF" and all moving parts are "on the ground" and don't be in a position where you could be crushed of the boom, stick, or bucket should move unexpectedly.

Wear leather gloves and eye/face protection when loosening the fittings.

 

[used red MN]

I would say you have to determine which hose it is. Also give a description of where it is on the machine. I am pretty that machine has a hydrostatic drive so I believe that would also have hydraulic hoses. Is the leak inside the backhoe assembly? You say the hoses are wrapped is the leak coming from inside the protective wrap? That will make it more difficult to find which hose it is. As wore out said place the hoe and push blade on the ground before opening the line fittings. Any release of pressure at that point will be short lived.

 

[560Dennis]

I used New hydraulics to fix my obsolete hose on the 560 , heres the link .
they may have seen what your issue is and fix it in the past, I don’t know .
https://newhydraulics.com/ Oshkosh , Wi

 

[bones774]

I can actually see the leak , it's an unwrappped 180deg turn, the fluid is coming thru the hose in approx 3 different spots, not torn or shredded, just like the hose is porous.
Its the hose going to the backhoe cylinder and the control lever

 

[BarnyardEngineering]

You're right that it's almost certainly a standard hose. The question is which standard as there are several, and for some reason most hydraulic devices seem to use multiple standards. Best thing to do is get the hose off, and take it to a shop that builds hydraulic hoses to have a replacement built.

Make sure everything is lowered to the ground, and slowly crack open the first connection. It's not going to explode and spray high pressure oil all over if you maintain control of the connection. You might get a little spray, but if you do, quickly turn it back to stop the spray. There shouldn't be a long protracted spray even if the system is under pressure, because you've lowered everything to the ground, RIGHT?

It's going to make a mess. There is no way around it. You can contain it to some varying degrees of success with rags.

 

[used red MN]

About the mess or oil that will leak out. Sounds like you have minimal knowledge of a hydraulic system. Since this hose operates a cylinder a valve for a cylinder blocks off the flow when you release it. Even if there are two hose to the cylinder both are blocked when the lever is centered. Any oil in the hydraulic reservoir or system will not flow out of the connection you open. The only fluid that may come out will be what is in the cylinder on the side of the internal ram piston that the port the leaking hose is connected to.

 

[NDIHC]

One note of caution, never EVER put your finger over the hole to try and stop the leak. If the pump is running or the pressure isn't released, the fluid can be injected through your skin and into your bloodstream. That can be fatal.

 

[peteL]

One note of caution, never EVER put your finger over the hole to try and stop the leak. If the pump is running or the pressure isn't released, the fluid can be injected through your skin and into your bloodstream. That can be fatal.

Just like a super heated steam leak. You will hear it but will not see it. High pressure steam would cut body parts off.

 

[ed12345]

Hi, I just noticed i need to replacing a leaking line. It's a terramite T5 CBL and i know they are outta business, I imagine the hoses are somewhat standard. This will be my first replacement and just looking for safety tips. The access to hose seems somewhat straight forward. The hoses are wrapped in what looks like old type corded fire hose, not sure if that was original or the previous owner did that, it's all frayed but i do have old fire hose. Can I determine what hose i need before even starting or do i need to remove and bring to a shop. I would rather have job done all at one time, remove and replace at same time. I'm concerned about high pressures in the line upon removal, any safety tips? Also how should i have hydraulic cylinder positioned when removing.
anything I forgot please let me know.
Thanks

Rented one once and a rock fell and bent a hyd fitting. They were standard 1/4 inch pipe thread fittings and hyd hose. Nothing special

You might run into an o ring or JIC (flared) so just be careful if the threads don’t match

Surplus center is generally where I get my stuff from. And they have many if not all the adapters you might need

Hydraulic Hose Assemblies | Hydraulic Hose and Hose Assemblies | Hydraulics | www.surpluscenter.com

Hydraulic Hose Assemblies,Hydraulic Hose and Hose Assemblies,Hydraulics, 3/4&quot X 108&quot 3/4 NPTM X 3/4 NPTM 3000 PSI HYD HOSE Brand new,

www.surpluscenter.com

Pressure concerns. The system is around 2000 psi. Just let down the fel and backhoe Down. Turn off engine. Move all the hyd levers to let off pressure. Carefully crack hose connections to let off any residue pressure and replace. Not a big deal

 

[kencombs]

I have a couple of hose specialist shops about 15 miles away. I'd take it to them and have a new one made. Usually in under 15 minutes.

Don't know about your area but if such a shop is around it's worth the drive.