Need some help/advice with 763

[formflier]

So...just joined tractor by net. I've got a 763 that needs some work. Primarily stopping up hydraulic leaks.

It was used hard on a dairy farm and neglected for a number of years. compression is good on engine and hyd pressure is good. Now I just need to go through the process of replacing the appropriate fittings and hoses to get the leaks stopped.

I have seen other posts talk about pressure washing the engine area. Anything down there I don't want to hit with a pressure washer?? Basically don't want to cause another problem while trying to clean up.

The "big" aux connector next to the bucket starts dripping after the machine is good and warmed up. Is that hard to change...or is there maybe an o ring or something else that can be changed in it??

Last question....for now...I have one wheel that shows some seepage after sitting for a few days. Not sure if this is from hyd fluid or what....is there a seal that can fail to allow some seepage??

Thanks...looking forward to discussion and learning more about how to fix this.

In general I think I'm a decent mechanic...just not experience on skid steers

 

[brain55]

Pressure wash away, as long as the engine is off. I just replace the auxillary fittings. The wheel seepage is an oil seal on that axle, possibly the bearing is bad, the axle housings are part of the chaincase on that, so what you see leaking is hydraulic oil from the chaincase.

Brian

 

[formflier]

For the aux fittings it looks like you can put a flare wrench or something like that on it and unscrew it. To me...looks pretty simple. Is it as straightforward as that??


Is the seal on the wheel hard to change??

Other than the fact that you are loosing fluid...anything wrong with letting it continue to seep for a while?

Basically I use it around my property for short periods of time. I do eventually want to get all leaks stopped up...but don't want to through a whole bunch of money at it..at once. I think I am loosing most fluid from the leaking aux fitting...so that is what I'm going to try to to change first.

Are they very expensive??

Thanks for the reply.

 

[brain55]

The auxillary quick coupler is that straight forward, depending on which one it is, I would say $60 max. I would be concerned about the axle seal leaking because of a bad bearing. I would lift that axle, pull the wheel and check for up and down play in that axle. If there is no play then just the seal is leaking. For one axle seal, even if you had to replace the bearing, I don't think you would be out much more that $100. Replacing the seal isn't bad, you do have to remove the drive chain and sprocket for that wheel and it can be a little challenging to get it put back on, but not terrible.

Brian

 

[formflier]

Good info. Thanks

So...for the bearing check I'm going to get the wheel off and then see if there is any "play" in what the wheel connects to??


Hey...I also saw some of your replies to a question about a cracked flex pipe (exhaust) in another bobcat posting.

My flex pipe has separated from the muffler. You had mentioned a gasket or connector that keeps them together. Is that (just the connector/gasket) something that can be replaced or do you have to do a new flex pipe and muffler. I've got some pricing on the pipe and muffler...a bit spendy..for now anyway.

 

[formflier]

Oh...and back to pressure washing. When I rotate the cab back to get underneath...can all of that be pressure washed as well??

 

[brain55]

Oh...and back to pressure washing. When I rotate the cab back to get underneath...can all of that be pressure washed as well??

Yes it can. Remove the inspection covers on the bottom so the water will drain. You might also need to clean any dirt and debris out of there too.

Brian

 

[RPW]

Wash away. The only concern you might have is where all the oil grease will wash to. If it's really oily etc. you might want to setup up some kind of oil/grease/water separater or if possible take it to a car wash. Just a thought. Flex pipe can be got from your dealer or you could fab up something from the auto parts store.

good luck

 

[gatractorman]

FYI formflier, you dont have to remove the axle to replace just the seal if that is the only problem you have. I can never keep it straight there is either 1 large bolt or 3 smaller bolts that hold the hub to the axle cant remember which setup the 763 used. Anyway the hub will come off the axle to allow SEAL replacement without removing axle.

 

[formflier]

Thanks for the idea to take it to car wash...it is really oily..nasty in there. I may load it in dump trailer and wash it with it sitting in dump trailer. Then can tip it up a bit with it tied down...to drain out the water.

Are the inspection covers mentioned in an earlier post on the very bottom of the machine??

 

[formflier]

Oh..and something else to pick everyone's brains about.

So far I have only added the real bobcat hydro fluid...but good grief it is pricey.

Yes I hope to get all my leaks taken care of...and that will help with that expense...but the question is..

Is the bobcat stuff really worth it. I have seen other places on the internet where they say that it has special stuff in it and is much better than other less expensive fluid...

Anyone with thoughts on that??

 

[RPW]

Yes, Under the hydrostatic motors will be two covers (one on each side) held on by 4 bolts. Removing these covers should allow for cleaning of larger debrie from the bottom of the machine. This is true with my 742 at least.

 

[BCTony]

the concern with hydraulic fluids in the Bobcat is foaming could lead to over heating that leads to expensive repairs, mixing two different fluids or using too thin or light of a fluid could cost more in the long run..e.g. the drive motors are ran and "cooled" by the hydraulic fluid

 

[rdbkr99999]

For the hydraulic fluid, according to Bobcat, you can use 10w-30 engine oil. I've been using 10w-30 in mine for about 6 months without any issues and I live in South Texas where it gets HOT!

 

[good old boy]

had a bearing to go out and it wallard the housing, so now the bearing is very loose in the housing. who can fix this housing?

 

[good old boy]

had a bearing to go out and it wallard the housing, so now the bearing is very loose in the housing. who can fix this housing? this bearing is on the front hub. does anyone have a new hub housing beside BOBCAT?