4400 HST transmission flush

/ 4400 HST transmission flush #1  

mowingmario

New member
Joined
Aug 24, 2022
Messages
1
Tractor
John Deere 4400 HST
HI, I'm new to the forum.
The screen filter at the bottom of the transmission on my 4400 keeps getting clogged up bad enough that nothing works. I clean it and it happens again. I already wasted about 15 gallons of Low vis Hygard. Is there a way to flush it or only a dealer can do it. It looks like the bottom of the transmission is dirty, but I do not see an easy way to take the bottom apart.

Any help would be appreciated.

Thanks
 
/ 4400 HST transmission flush #2  
Wow. What is the material that’s plugging the filter? Continue to drain/clean until it clears up. But, maybe you can reuse most of the fluid if you can strain it?
 
/ 4400 HST transmission flush #3  
HI, I'm new to the forum.
The screen filter at the bottom of the transmission on my 4400 keeps getting clogged up bad enough that nothing works. I clean it and it happens again. I already wasted about 15 gallons of Low vis Hygard. Is there a way to flush it or only a dealer can do it. It looks like the bottom of the transmission is dirty, but I do not see an easy way to take the bottom apart.

Any help would be appreciated.

Thanks

I think it would be important to find out why the screen is constantly being plugged. Can you show us some pictures?

Typically a fill and drain a couple of times with filter changes is enough to clean out the system.
 

Marketplace Items

2017 CATERPILLAR 420F2 BACKHOE (A64279)
2017 CATERPILLAR...
2006 Lexus ES 330 Sedan (A61574)
2006 Lexus ES 330...
TAKEUCHI TB230 EXCAVATOR (A64279)
TAKEUCHI TB230...
Athey 7-12 Force Feed Loader (A62679)
Athey 7-12 Force...
2020 Water-Land Dba Continental Trailers Trailer, VIN # 1ZJBU1415LC037150 (A61569)
2020 Water-Land...
2016 TEXT 26ft T/A Dovetail Flatbed Equipment Trailer (A59230)
2016 TEXT 26ft T/A...
 
Top