7753 Very loud hydraulic drive, please help !

[BCat7753]

My 7753 skidsteer that has 2300 hours on it has slowly been getting louder when turning hard, pushing against piles of dirt, or even putting the parking brake on but otherwise functions perfectly. I know these pumps can sometimes be noisy by reading other posts however this is getting pretty bad and I fear something might be getting ready to fail causing other preventable damage. I have changed my case filters on the hydro motors and the primary hydro filter to no help. I have been running tractor supply universal hydro fluid and have been debating on buying the bobcat oem but have my doubts this will help ? With the hydro fluid not being foamy and with not much dirt or metal pieces in the filters could it just be time to rebuild the tandem hydro pump or possibly the drive motors ? Thank you in advance for any help.

 

[Tazza]

You covered everything i was going to suggest.
Can you tell if the noise is coming from the pump or the motors? i know it's hard to pin point....
Normally loud noises will give foamy oil, but you said you weren't getting anything.
Pulling the pump isn't a job you want to jump into too fast, not hard to do, just a big job.

 

[BCat7753]

You covered everything i was going to suggest.
Can you tell if the noise is coming from the pump or the motors? i know it's hard to pin point....
Normally loud noises will give foamy oil, but you said you weren't getting anything.
Pulling the pump isn't a job you want to jump into too fast, not hard to do, just a big job.

I cannot tell where the noise is coming from, would it be worth plugging the lines to the motors and try to move the drive levers and see if the pump makes the noise ? If it does turn out the be the pump and I decide to pull it do you have any pointers on what to expect when rebuilding ? should I be buying new pistons, shoes, and wear plates ? Thank you, Corey.

 

[Tazza]

I cannot tell where the noise is coming from, would it be worth plugging the lines to the motors and try to move the drive levers and see if the pump makes the noise ? If it does turn out the be the pump and I decide to pull it do you have any pointers on what to expect when rebuilding ? should I be buying new pistons, shoes, and wear plates ? Thank you, Corey.

No problem plugging the lines and trying that, you will have air in the lines, so you may still get a bit of noise, worth a shot though.
I do have pictures, if you dive into the pump, let me know and i'll dig them up for you.

 

[BCat7753]

No problem plugging the lines and trying that, you will have air in the lines, so you may still get a bit of noise, worth a shot though.
I do have pictures, if you dive into the pump, let me know and i'll dig them up for you.

I will take you up on the pictures since I have not had anything like this apart before and dont really know what to expect other than I need to keep everything very clean. My email is [email protected] Thank you !

 

[Tazza]

I will take you up on the pictures since I have not had anything like this apart before and dont really know what to expect other than I need to keep everything very clean. My email is [email protected] Thank you !

See what i can dig up for you.