Backhoe Loader 75 & Backhoe 8 hydraulic cylinders

mikedn@cox.net · Dec 29, 2009

I have a JD 1050 tractor, circa '85, which I got for 'cheap money', knowing it needed work.

The tractor came with a Loader 75 and Backhoe 8.

The hydraulic cylinders on both the loader and backhoe need to be either replaced or rebuilt, and all the hoses should be replaced as well.

Hoses are easy... cylinders a little less so in this neck of the woods. It might be easier for me to merely replace the cylinders rather than pulling them off and attempting to find a shop that rebuilds them (accurately). Given what I paid for the tractor, I figure I can invest some money into it and still come out ahead.

Unfortunately I do not have access to a parts manual or technical manual for either the loader or the backhoe, I only got a shop & parts manual for the tractor itself.

Is anyone on the forums familiar enough with this model loader/backhoe to tell me what the bore/stroke/psi/mounting style of the various cylinders on these loaders/hoes are, so I could shop around for pricing on replacements?

Or, is there an online source for cylinders such that if I get the JD part numbers they would be able to adequately cross-reference and get me suitable replacements?

(I'm not asking for a whole **** of a lot, am I?

)

Thanks,
Mike

MtnViewRanch · Dec 29, 2009

New cylinders will be expensive, a replacement swing cylinder for our Case 580E is over $1000. There is supposed to be a place that has after market replacements at 50-60% of OEM, but I never tracked them down.
To replace the cylinders with ones that fit on properly will cost many thousands of dollars. You really need to rebuild the existing cylinders, either yourself or find someplace that can.

Just my opinion, sorry that I can't help.

Egon · Dec 29, 2009

Keep looking in your local industrial area. Some one will be able to rebuild the cylinders.

In fact your hose source should be able to do it.

mikedn@cox.net · Dec 29, 2009

I'm sure OEM cylinders are insanely expensive... I have a receipt somewhere for a stabilizer cylinder for the backhoe which was over $500.

However, its difficult to judge what the cost would be for aftermarket replacements, since I don't know the technical specs on each of the cylinders on the backhoe or loader.

If the cost of rebuilding the cylinder is $100 and an aftermarket replacement is $200, it might be worth it to simply buy aftermarket replacements -- less down-time, a simple remove-and-swap.

The previous owner did a piss-poor job of maintaining this tractor, with over 3,000 hours. However, since the price was right (virtually free) its worth investing some money into.

MtnViewRanch · Dec 29, 2009

mikedn@cox.net said:
I'm sure OEM cylinders are insanely expensive... I have a receipt somewhere for a stabilizer cylinder for the backhoe which was over $500.

However, its difficult to judge what the cost would be for aftermarket replacements, since I don't know the technical specs on each of the cylinders on the backhoe or loader.

If the cost of rebuilding the cylinder is $100 and an aftermarket replacement is $200, it might be worth it to simply buy aftermarket replacements -- less down-time, a simple remove-and-swap.

The previous owner did a piss-poor job of maintaining this tractor, with over 3,000 hours. However, since the price was right (virtually free) its worth investing some money into.

Wow, at 3K hours and your needing to replace-rebuild the cylinders, that machine must have had a rough life. Our 580E is pushing 7K hrs and is just now needing a stabilizer cylinder seal kit.

I doubt that you will find any direct replacement cylinders that cheap.

Good luck with your search.

Kernopelli · Dec 29, 2009

Provided that the rods aren't badly rusted/pittted, I would definitely recommend rebuilding the cylinders you have. Any reputable hydraulic repair shop should be capable of doing them correctly. It is not a terribly difficult job to do yourself for that matter. It is definitely the cheapest route and doesn't require a great deal of mechanical skill or specialized tools. There are a number of TBN members that can walk you through the process of disassembly/assembly should you find you need some assistance.

Since you are pretty new to TBN, I'll give you the 411 on posting here.....WE LIKE PICTURES!! Feel free to break out the digital camera and share the love for your new bargain!

kennyd · Dec 29, 2009

Mike, First-Welcome to TBN

There is a wealth of info in the hydraulics forum on rebuilding cylinders...Also-register (for free) at www.jdparts.com and look your loader and backhoe up, all the exploded parts diagrams are there, it's the same basic system the dealers use at the parts counter.

Rebuilding cylinders is not a hard task, you can do it yourself or find a local shop to do it, just look in the phone book under "hydraulics" to find one.

And I need to ask...Why do you think the cylinders need rebuilding? Are they leaking?

There is a good online source for seals, but you will have to be able to accurately measure the old ones and determine the proper ones to order. I find it's just easier (but not always cheaper) just to order the rebuild kits from JD.

Take a look at jdparts and see what you think-let me know if you need help with it.

RickB · Dec 29, 2009

If you want an alternative to Deere, the hoe was built by ARPS. I believe it would have been a model 80 if it has been badged as an ARPS hoe. May also be the same as a Ford 757B.

mikedn@cox.net · Dec 30, 2009

kennyd said:
www.jdparts.com

Awesome link, thanks. I was able to go there and print to PDF the parts diagrams for both the loader and the backhoe. Now at least I have a starting point to work from

kennyd said:
Rebuilding cylinders is not a hard task, you can do it yourself or find a local shop to do it, just look in the phone book under "hydraulics" to find one.

Although I'm sure I could do it myself (I do all my own engine and transmission work on my Harley and Tacoma, for instance) its more a matter of "time" than anything else.

My 1 free day a week is swamped with other projects... so it would be easier to either 'swap' the cylinders, or have someone else rebuild them. I'm usually wary of other people (I don't know/trust) doing work on my equipment.

(Although, admittedly, I'm not much of a hydraulics guy. I did a minimal amount of work on a Case 845 skidsteer I owned, but I sold that off as I really needed something with a hoe, and for what I got for the Case I got the 1050, can repair it, and still come out ahead.)

I do have a few feelers out from some local tractor guys who are involved in the antique tractor club in the region, but given the time of the year they're busy w/ other things, understandably.

kennyd said:
And I need to ask...Why do you think the cylinders need rebuilding? Are they leaking?

They are leaking fairly bad, and the hydraulic system doesn't maintain pressure (i.e. if I raise the stabilizers in morning, by nightfall they're back on the ground.)

The rods don't appear to be in bad shape. There is no apparent rust or pitting.

The hoses are a complete disaster, the exterior rubber shealthing is completely disintegrating at some points, there are leaks at the connectors, etc. Like I said, previous owner only repaired the absolute minimum. I'll probably order the hoses today now that I have the part #'s. A few of the prices I saw on the site you provided didn't look all that bad, a little more expensive than what I'd pay locally for have them fabricated.

Of course, I knew I'd need all these repairs going in. I figured I'd have to spend some money getting everything up to snuff. However, the engine runs good and strong and doesn't blow oil. The rubber is still good, although I'll have to do the brakes. Probably the only other item to do (might be) the clutch, given the age, but although it doesn't engage as soon as I'd like, it doesn't slip either, so it may simply need adjustment.