Deere 250

[BamBam10]

I have a milky colored fluid that is leaking from the chain case or the brake assembly, I cant really tell. Any body have any ideas?

 

[BamBam10]

I don't have any brakes either. with the machine off and parking brake set i can push it back and forth.

 

[SkidsDeereMech]

I don't have any brakes either. with the machine off and parking brake set i can push it back and forth.

the fluid is most likely chain case oil 80-90 that has been contaminated with water through the breathers. check the chain case oil level. there is a plug between the tire 12 or 14 mm allen key if i remember. if it is over full you may have a motor leaking into the chain case. you have likely driven through the park brake enough or the piston seals inside have given up the ghost. let me know what you find

 

[BamBam10]

the fluid is most likely chain case oil 80-90 that has been contaminated with water through the breathers. check the chain case oil level. there is a plug between the tire 12 or 14 mm allen key if i remember. if it is over full you may have a motor leaking into the chain case. you have likely driven through the park brake enough or the piston seals inside have given up the ghost. let me know what you find

the case oil level was good, the drive chains have all just been replaced 20 hrs ago. as well as a drive motor on the left side. the brakes are actually working as I was only really able to rock it back and forth tonight, it seemed like last night after I was moving it around a little I could roll it. would hydraulic oil just turn milky from mixing with water? is there any thing I need to do before unhooking the main hydr line and return line from the pump to check the lines for leak? not sure about hydro lock? thanks

 

[SkidsDeereMech]

the case oil level was good, the drive chains have all just been replaced 20 hrs ago. as well as a drive motor on the left side. the brakes are actually working as I was only really able to rock it back and forth tonight, it seemed like last night after I was moving it around a little I could roll it. would hydraulic oil just turn milky from mixing with water? is there any thing I need to do before unhooking the main hydr line and return line from the pump to check the lines for leak? not sure about hydro lock? thanks

I would start out with washing out the machine and let it dry completely. You will have a much easier time determining the source of the leak if any left over mess from the motor change out and chain replace has been cleaned out. After the unit is cleaned out run it for a bit and check for the source of the leak be diligent and remember the rules of gravity. Oil will travel to the lowest point it never climbs. Sweating fittings may look like they have climbed but its just fine debris soaking up the oil sweat. As far as the brakes some times a little air in the system and cause the unit to be a little more movable . If you have the unit off the ground on blocks you should only be able to rock the wheel back and forth about 1/2 to 3/4". more than this and you have had the chain installed to loose, not to worry you can fix this easy. Remove the tire while machine is in the air or on blocks loosen the bolts holding the axle hub to the machine. pry the hub forward if its in the front to tighten the front chain. pry rearward if its the rear chain. keep tension and tighten a few bolts so it wont more when you relieve pressure on the hub. rock the hub and axle back and forth to check play. check to see if they are "the same". Now about the brakes these units have a separate park brake assembly as in not integrated to the motor. These often fail and can be expensive to repair. The machine should sit when parked and off due to the reliefs in the hydrosatatic system. These will eventually leak down and the machine could roll or move over time. Especially if the reliefs have become weak over time. Check you hydraulic oil to see if its "creamy" or contaminated with water. The oil that has leaked in your machine is it stinky? 80-90 gear oil in the chain cases is smelly. The all season trans diff/ hydraulic oil that's in you hyd tank should be thinner and not as pungent of a smell. if it stinks it maybe left over mess or a bad seal job on the motor replacement. Sorry for the encyclopedia but when I cant see or touch I need to swing with a broad sword. Keep me posted and i hope something here is helpful.