rebuilding drive motor

[pgold]

I took a drive motor off my skidsteer and took it to a hydraulics shop to get it fixed. The motor worked, but it was slow when the oil would heat up (thin out). I assume that is because the oil would slip through the grooves on the scored walls. They said that I should just buy a new one from them. Is it impossible for me to rebuild it myself? I am mechanically inclined and I can get a machine shop to do the things I can't do myself. I am trying to get my machine up and running again as cheaply as I can. Things are pretty tight right now and paying over 1000 dollars for a new drive motor is going to hurt. I have a local parts place called Motion Industries and I imagine they can get me any part I will need. I am open to suggestions and I appreciate any advice.

 

[PILOON]

Interesting.
Time to think 'out of the box'!

In aviation when an engine cylinder was scored or over size, because of the high cost, they'd bore oversize and chrome plate back to standard.
Maybe it is time for the hydraulic industry to look into that possibility.

The plating process is well known as is machineing to close tolarances, so what is holding back entrepeneurs from exploring this great potential?
Surely a hydraulic pump does not work as hard or as hot as an airctaft engine!

I really don't see why it can't be done.

 

[pgold]

I was just thinking I could take everything apart and get all the walls bored slightly larger. I don't see why people would rebuild engines and be afraid of this little motor. It seems quite simple, but maybe there is something I am overlooking.

 

[J_J]

I was just thinking I could take everything apart and get all the walls bored slightly larger. I don't see why people would rebuild engines and be afraid of this little motor. It seems quite simple, but maybe there is something I am overlooking.

Probably not a good idea to do it yourself unless you have all the tools to measure things and the ability to clean up wear marks and scoring.
I would just get a quote on rebuilding from several places, and compare that to a new or surplus motor from several places. . I have been told many times that things like that are not worth rebuilding, and that was from the hydraulic tech, not the salesman.

 

[copperdog]

There is not many people who know how to fix anything anymore, thats some of the reason they want to replace it.

If you can hook a playstation up to it and fix it that way, you might find a qualified person.

I would think your first challange would be to find replacement parts to repair your motor. Especially if you need a housing?
Does China know how to make them yet?

Sorry, I am frustrated with America's work ethic.

 

[Wayne County Hose]

There is not many people who know how to fix anything anymore, thats some of the reason they want to replace it.

If you can hook a playstation up to it and fix it that way, you might find a qualified person.

I would think your first challange would be to find replacement parts to repair your motor. Especially if you need a housing?
Does China know how to make them yet?

Sorry, I am frustrated with America's work ethic.

Ugh. I own and operate a hose and hydraulic shop. I am frustrated with America's ignorance.

 

[PILOON]

There is not many people who know how to fix anything anymore, thats some of the reason they want to replace it.

Sorry, I am frustrated with America's work ethic.

Today's machineists only know how to use a computerized lathe, gone are the real macheneists.
The shops prefer to sell a replacement that someone else will warrantee with a sure profit and not carry inventory, it's called 'just in time' marketing; but with today's economy it seems that nobody in the supply chains has inventory anymore so they now call it 'special order item'.
I have noticed that auto parts stores only seem to have oil filters and similar high volume stock on hand, just about everything else is 'next day' or 'next shipment' basis, with 'special order' becoming more and more common.
And that down to some basic spark plugs such as J8's.
Shucks, my neighbor slashed a tire on his 2 yr old Jeep and had to wait 3 days for a 'special order' as they claimed it was an uncommon size! (no, it was the factory origional equipment)

 

[Wayne County Hose]

Do you guys have any clue what it costs to stock parts? I have stuff on my shelf that's been there for over 2 years. I would have made more if I took the money it cost to stock that piece and put it in the bank. I'm probably an idiot for stocking what I do. Then when someone is in a pinch and I do have it, they complain about the price.

A machinist must first learn on non computerized equipment before he can learn CNC. CNC equipment has brought the cost of parts way down as it is much faster and more precise.

 

[J_J]

Wayne, you did not answer pgold's question, the question was, can he get someone to rebuild at a reasonable price , or would it be advisable to get a new motor.

 

[Wayne County Hose]

Wayne, you did not answer pgold's question, the question was, can he get someone to rebuild, or would it be advisable to get a new motor.

I don't know without looking at it. If he has doubts, I would seek another opinion. There is a company I deal with that seems very reputable. They are Attica Hydraulics in Michigan.

In most cases, by the time you do the machine work and buy the parts, you are up over half the cost of new which is in most cases about the time you should consider just buying new.