Long 610 hydraulic fill level

BFain

New User
I need to make sure that the hydraulic oil is full on our Long 610 but I also don't want to overfill it and take a chance on blowing any seals and having to replace them.
The manual, as well as some posts I've read online say to "fill to the top mark."

The top mark on our dipstick says "DT," which is the 4x4 tractor, right? Does my 4x2 fill to the same level as the 4x4? The dipstick in our tractor has 2 marks on each
side of it, all of them at different heights up the stem of the dipstick. I've attached a picture of the dipstick in or tractor. I'm thinking the RH is the fill mark we
should use but, if it's the top mark, that'd be the "DT" mark for 4x4 models. Even the marks on the other side of the stick aren't as high as the "DT."

Can someone help me? If the "DT" mark is where we need to fill it, great. But, like I mentioned, I just don't want to overfill and blow seals out. Thanks.
 
I agree with you on all the Level marks. I have a 610 also and the operators manual states to fill it to the top line. Like you mentioned.

Maybe...

Since the front Drive system does not share hydraulic fluid with the tractor maybe we can only assume, as you noted, the DT mark is higher on the dipstick because of the front drive mechanism inside the Transmission adding "gear" mass which would raise the fluid level inside the unit. So RH may well be safe for the rear drive units.

That said. I have filled mine 610 to DT (top mark), and have not had any issues to report of in the years I have owned it. I use the tractor as intended, cutting and baling hay.
 

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