bobcat 530 hydraulic fluid leaking into bottom?

kdfergie · Oct 12, 2014

I have a bobcat 530 and the hydraulic fluid leaks somehow into the bottom? What causes this to happen and what should I replace?

antfarmer2 · Oct 12, 2014

Need to clean it up and see where it's leaking from

SkidRoe · Oct 12, 2014

With a machine the age of yours, it could be a multitude of things. Like antfarmer says, you will need to clean up the mess in order to see where it is coming from. I typically use engine degreaser to soak it down, and then blast it clean with a pressure washer connected to the hot water tap. I believe that your machine predates the tilting cab design, so you will have to pull the seat out to get to the area that your after. Once it's clean, run the engine with the seat out. You should be able to find the source of your leak. Good luck - SR

Tazza · Oct 12, 2014

SkidRoe said:
With a machine the age of yours, it could be a multitude of things. Like antfarmer says, you will need to clean up the mess in order to see where it is coming from. I typically use engine degreaser to soak it down, and then blast it clean with a pressure washer connected to the hot water tap. I believe that your machine predates the tilting cab design, so you will have to pull the seat out to get to the area that your after. Once it's clean, run the engine with the seat out. You should be able to find the source of your leak. Good luck - SR

Leaking into the bottom, do you mean the chain case?
There are seals that hold the fluid in the motor, if they go bad it can pump into the chain case.

kdfergie · Oct 12, 2014

Tazza said:
Leaking into the bottom, do you mean the chain case?
There are seals that hold the fluid in the motor, if they go bad it can pump into the chain case.

It leaks internally, the chain case fills up and I have to drain it out of the front drain plug

kdfergie · Oct 12, 2014

Tazza said:
Leaking into the bottom, do you mean the chain case?
There are seals that hold the fluid in the motor, if they go bad it can pump into the chain case.

do you mean the hydraulic motor?

antfarmer2 · Oct 12, 2014

kdfergie said:
do you mean the hydraulic motor?

Ok thats a cheap fix pull your drive motors and replace the seals in the case

antfarmer2 · Oct 12, 2014

antfarmer2 said:
Ok thats a cheap fix pull your drive motors and replace the seals in the case

I made a seal set from pvc couplers

kdfergie · Oct 12, 2014

antfarmer2 said:
Ok thats a cheap fix pull your drive motors and replace the seals in the case

how do you pull the drive motors and how can i make the seals? thanks

antfarmer2 · Oct 12, 2014

kdfergie said:
how do you pull the drive motors and how can i make the seals? thanks

Unbolt the drive motors from both sides you will have to buy the seals you can make a tool out of pvc to set the seals

antfarmer2 · Oct 12, 2014

antfarmer2 said:
Unbolt the drive motors from both sides you will have to buy the seals you can make a tool out of pvc to set the seals

Keep it clean clean clean and don't let anything get in the hoses on my 743 there was a quad ring in there that I replaced that was gone

antfarmer2 · Oct 12, 2014

antfarmer2 said:
Keep it clean clean clean and don't let anything get in the hoses on my 743 there was a quad ring in there that I replaced that was gone

On mine had to replace the oring for the drive motors too

Tazza · Oct 13, 2014

antfarmer2 said:
On mine had to replace the oring for the drive motors too

I don't know if yours has a seal in the motor on the reduction box.
Either way, the drive motors need unbolting from the chain case. Hopefully they will simply slide out. With them out, if the seal is not in the drive motor, there will be a seal on the chain case around the shaft the drive motor spline slides into. Drill a hole and screw in a self tapping screw and use pliers to pull it out.

kdfergie · Oct 13, 2014

Tazza said:
I don't know if yours has a seal in the motor on the reduction box.
Either way, the drive motors need unbolting from the chain case. Hopefully they will simply slide out. With them out, if the seal is not in the drive motor, there will be a seal on the chain case around the shaft the drive motor spline slides into. Drill a hole and screw in a self tapping screw and use pliers to pull it out.

If I unbolt the motors they will slide off the sprockets? Or do I have to take the chains off? I opened up the top and I see two sprockets with the brake disc's on both sides. Do the brake disc's need to come off too?

antfarmer2 · Oct 13, 2014

kdfergie said:
If I unbolt the motors they will slide off the sprockets? Or do I have to take the chains off? I opened up the top and I see two sprockets with the brake disc's on both sides. Do the brake disc's need to come off too?

Just take the hoses off then unbolt the motors will slide right out will be fluid loss think ahead

antfarmer2 · Oct 13, 2014

antfarmer2 said:
Just take the hoses off then unbolt the motors will slide right out will be fluid loss think ahead

Pretty sure but not positive

kdfergie · Oct 13, 2014

antfarmer2 said:
Pretty sure but not positive

do i have to take apart the chains and the bolt that holds on the brake disc's?

antfarmer2 · Oct 13, 2014

kdfergie said:
do i have to take apart the chains and the bolt that holds on the brake disc's?

Did not have to on my 743

kdfergie · Oct 14, 2014

Tazza said:
I don't know if yours has a seal in the motor on the reduction box.
Either way, the drive motors need unbolting from the chain case. Hopefully they will simply slide out. With them out, if the seal is not in the drive motor, there will be a seal on the chain case around the shaft the drive motor spline slides into. Drill a hole and screw in a self tapping screw and use pliers to pull it out.

i'm ready to unbolt the motors but the clutch disc's are at the end of the motor, do i need to wrench the nut off on the end?

bobcat 530 hydraulic fluid leaking into bottom?

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