backhoe line routing 758c

tawilson · Mar 23, 2011

I replaced the hose that burst and one that was worn enough to warrant it. The one that burst went to the top of the dipper cylinder. I remember that because I was pulling the tractor along a shallow ditch I was digging and didn't pick up the bucket in time and the momentum of the tractor caused enough pressure to pop the line at the worn through spot. Luckily it happened in front of my shop about 30' from the used Weatherhead hydraulic hose maker I had just purchased and I was up and running in less than 2 hours. TSC is another place I've heard is reasonable for hydraulic hoses.

Elviscaretaker · Mar 23, 2011

Had no idea you could blow a line that way! After close inspection, mine all need to go from not being routed correctly they are all showing metal and wear. One was bounded up between the arm and the tractor and got pinched pretty bad. Bad enough that it's parked until I can get to it.
Is TSC an online place?

tawilson · Mar 23, 2011

Elviscaretaker said:
Had no idea you could blow a line that way! After close inspection, mine all need to go from not being routed correctly they are all showing metal and wear. One was bounded up between the arm and the tractor and got pinched pretty bad. Bad enough that it's parked until I can get to it.
Is TSC an online place?

Spiking your hydraulic pressure is the oldest trick in the book, and I've fell for it a couple of times. One time the loader bucket slipped off a rock or something and blew a hose.
TSC=Tractor Supply Company

Elviscaretaker · Mar 24, 2011

Hopefully that is one I can avoid. Do you have a thumb on your BH? I do but I'm thinking of ways to make it hydraulic instead of manual. Any ideas there? Thanks again.
Going to look the TSC up.

Elviscaretaker · Mar 30, 2011

Ordered all new lines for the backhoe today. Really hope the lengths are correct

. They'll at least be the right diameter though...

dwyleecoyote · Mar 31, 2011

Well, as long as everyone is checking out this thread, I will post my question here.

I have a 757B backhoe that I bought in December. It had been sitting at least 3 years, in a clean, dry garage. I just put it on to start playing with it, and noticed some seepage from some of the cylinder seals. I know a little is probably normal, but how much is too much? It will sometimes leave a visible line on the shafts if I change direction mid cycle. On the dipperstick(elbow?) cylinder, the one that you can see the easiest from the controls, will have a visible buildup after about 3 dozen complete cycles. I never really noticed this on my front loader. Would you actually want a little seepage to help keep the shafts clean when digging?

Thanks in advance, and to keep with the spirit of this thread, here is a couple shots of my hose routing if it helps anyone. Mine is a 757B though.

Elviscaretaker · Mar 31, 2011

The 757B looks a bit easier to route the lines through than the 758C.
Just my opinion on the leak but if you can tolerate a leak do it, but myself, I'd start thinking of repairing it. First though, try some of the Lucas hydraulic oil conditioner with anti-leak. It may or may not help. I bought some for mine to avoid splitting the thing but I can't say yet if it works or not since I haven't put it in yet

And the seepage will actually have the opposite effect and attract dirt around the leak point.
Jumping around here but your seals most likely just dried out some and may come back to life with a little help and or use. Anyone else have a thought about that?
On a side note, picked up my new lines only to find out they put the 5 JIC fitting on instead of the 6 JIC! They have them back and are correcting that. Go figure.

May have been my fault there though....

dwyleecoyote · Mar 31, 2011

I would be pretty nervous about adding anything to my hydraulic fluid. My tractor is HST, and it shares the hydraulic fluid with the transmission and HST pump, which I just spent over $2k to have re-sealed. I will just keep eye on the seals for now probably, I haven't even dug a hole with it yet. On the plus side, I work next door to a hydraulic shop that can take care of the cylinders if it becomes a problem.

Elviscaretaker · Mar 31, 2011

Local hydraulic shop here that recommended I give it a try. Mine is a HST also.
Lucas Hydraulic Oil Booster & Stop Leak : Lucas Oil
Claims good for auto and wet brakes. Don't see an issue unless I missed something on the spec sheet. Talked with the not so local NH dealer and they also carry it.

dwyleecoyote · Mar 31, 2011

Interesting. I never heard anything bad about Lucas products. I still think I will take the wait and see route though. I went with the option of doing a re-seal based on my tractor being a 1987, 1400 hours, and it lived outside for several years. That seemed like a fair life span for seals. Plus a new hydrostatic pump runs something like six grand, so I didn't mind having it checked over and re-sealed.