753c slow hydraulics

Haha. I'd wager you are correct! Hard to drop that kinda money into a machine I paid 6500 for. It's a part of the game. Gotta pay to play. So looks like an easy $3000 is about to drop in the 753.

So as you all are more experienced than me, which route would you go with a personal owned-around the land bobcat? Go for the heavy $3000 repair with both new motors, or $1500 now, get it rolling again, and get the other motor a few months from now? Reason being, I can financially swing 1 motor now. But doing both of them puts me in a tight spot. I'd rather have them both, but at the same time I don't want my bobcat sitting another month or 2 useless.

Or, replace my bad motor and send my other good one in for a rebuild at $700. Putting the repair at $2200-ish?

WOW!!!! I don't feel so bad about my little $1500 motor now haha

BigEasy374 said:

Haha. I'd wager you are correct! Hard to drop that kinda money into a machine I paid 6500 for. It's a part of the game. Gotta pay to play. So looks like an easy $3000 is about to drop in the 753.

So as you all are more experienced than me, which route would you go with a personal owned-around the land bobcat? Go for the heavy $3000 repair with both new motors, or $1500 now, get it rolling again, and get the other motor a few months from now? Reason being, I can financially swing 1 motor now. But doing both of them puts me in a tight spot. I'd rather have them both, but at the same time I don't want my bobcat sitting another month or 2 useless.

Or, replace my bad motor and send my other good one in for a rebuild at $700. Putting the repair at $2200-ish?

Click to expand...

It's a gamble, there is no correct answer aside from replacing both and thereby minimizing the gamble. However, the reality is that sometimes the wallet is on a starvation diet, or might as well be as thin as it is. If your other drive motor seems to be operating properly, and assuming your model 753 has a case drain filter for each drive motor (some only used one case drain filter for both motors), check the case drain filter of the (we hope) still good drive motor. If it's clean inside, not full of debris/fragments, then yes, you may get a few more miles out of that motor before you have to drop the coin and replace it. On the other hand, if the case drain filter has debris in it, well, looks like your going to be ordering the double cheeseburger instead of the single.

Ok thanks! I'll have a look at the filter tomorrow and see how it looks

It's possible the reason they suggest changing out both motors is that the new ones are a slightly different displacement than the originals and may run faster or slower for a given control position. If that's true you'll just have to compensate a bit with the controls to keep it going straight if you only change one side. It's annoying but we do it to a degree with every hydrostat we run even new they're never perfectly matched, it's the nature of the beast.

lantraxco said:

It's possible the reason they suggest changing out both motors is that the new ones are a slightly different displacement than the originals and may run faster or slower for a given control position. If that's true you'll just have to compensate a bit with the controls to keep it going straight if you only change one side. It's annoying but we do it to a degree with every hydrostat we run even new they're never perfectly matched, it's the nature of the beast.

Click to expand...

with one old motor and one new motor you'll probably notice quite a difference in speed from side to side.

but if it's something you can live with, then do just one.....

if it was MY bobcat for around the house/farm ect, and i was dong the work myself,
i'd just do one.

if it was for a paying customer, he'd be buying 2 motors....


:drinkup

Well, had a look at the filter and yes my bobcat only has one. Meaning both drives have seen the same debris. So I bit the bullet and bought both drive motors. Since i got both new motors, i will definitely replace the filter at the reservoir and the filter at the engine and flush out all the fluid. Any thing else i should do while im doing the repair?

I plan on putting the bobcat on jack stands and purging the air out of the lines while there is no load on the machine. I assume this is the best way to do it. Maybe not?

I should have listened to you sooner. As I was beating my head against the wall trying to resolve the issue, I decided to shine a flashlight in the reservoir. As the tank was gurgling I noticed a tube surface and fall back down. Turned out, a 1ft long 3/4" nylon clear tube was in my reservoir and had made its way to the upright position, in the feed hose. On level ground, the fluid level was above the tube, making it unnoticeable, but as soon as I had the bobcat at an angle, it would suck air through the tube. I assume this used to be at the end of a jug or something to help when filling with fluid and must have fallen off and no one noticed. I fished the tub out with a coat hanger, ran the bobcat 3 hours straight without a hiccup. I guess since the tube was clear, I was never able to notice it before. The black tank didn't help either. But I am thrilled to say this was my issue the whole time. Thanks for the suggestions everyone!

Never EVER would have thought of that!

Well done! :drinkup

lantraxco said:

Never EVER would have thought of that!

Well done! :drinkup

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well, i've seen some strange things happen over the past 30 years, but thats a new one

:crazy

:drinkup

willie59 said:

It's a gamble, there is no correct answer aside from replacing both and thereby minimizing the gamble. However, the reality is that sometimes the wallet is on a starvation diet, or might as well be as thin as it is. If your other drive motor seems to be operating properly, and assuming your model 753 has a case drain filter for each drive motor (some only used one case drain filter for both motors), check the case drain filter of the (we hope) still good drive motor. If it's clean inside, not full of debris/fragments, then yes, you may get a few more miles out of that motor before you have to drop the coin and replace it. On the other hand, if the case drain filter has debris in it, well, looks like your going to be ordering the double cheeseburger instead of the single.

Click to expand...

Are there case drain filters on all 753 models?