B7800 leaking cylinder.

M

MAXA

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B2650, B7800
Jan 12, 2025
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NJ
My front loader has a leaking cylinder that is leaking pretty bad to the point that the tractor is very low on fluid. Do i need to use Kubota fluid to fill it back up or can i use something cheaper like the stuff tractor supply sells?

Also should i just drain what is left or just try to guess how much to put back in?

The leaking cylinder was fixed once before by the local dealer 4 years ago they used a seal kit going by the invoice. The leak is right where this red arrow points to.

I don't know if i should take it back to the local dealer or find a local shop.
 

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North Idaho Wolfman

North Idaho Wolfman

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Don't use cheap fluids, your just asking for trouble.

Why would you drain what's left unless it need a fluid and filter change.
There is no guessing required, just fill the the proper height on the dipstick or the window.

Either take the cylinder to a hydraulic shop and have it rebuilt or do it yourself, they are very simple to rebuild.
 
M

MAXA

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Equipment
B2650, B7800
Jan 12, 2025
67
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NJ
Trying to find this seal kit they reference a serial # do you know where to find it?

The tractor serial and the one stamped on the cylinder do not match.

LA402 loader.
 
whitetiger

whitetiger

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Kansas City, KS
MAXA said:
Trying to find this seal kit they reference a serial # do you know where to find it?

The tractor serial and the one stamped on the cylinder do not match.

LA402 loader.
Click to expand...
The tractor serial number has nothing to do with the loader.
There should be a cylinder part number stamped on the cylinder barrel.
 
North Idaho Wolfman

North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
34,978
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Sandpoint, ID
The loader serial number will be on one of the towers usually the right.
 
M

MAXA

Member

Equipment
B2650, B7800
Jan 12, 2025
67
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NJ
It's confusing the way they have this there must be 6 different ones.

The cylinder is stamped 7J040-63011.
 
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