change hydra fluid in Eaton 750 hydramatic transmission

richard48367July 19, 2013

anyone have any tips on how to change the fluid in this transmission.

Thank you for reporting this comment. Undo

Hydramatic or hydrostatic? former is a trade name for automotive transmissions; latter is a transmission type used in lawn/garden tractors, among other things. Pls advise.
If it IS a L&G tractor app we are talking about here, would also help if you would supply the make and FULL model number from off it's ID plate so that we may be able to chase down detailed specs.....

    Bookmark   July 21, 2013 at 10:26PM
Thank you for reporting this comment. Undo

Thanks for clarification. It is a hydrostatic in a 38" gravely lawn tractor. Although the tractor bears the gravely name, I think it was built by Ariens. I will try to find the ID plate. The Gravely manual does not cover changing the fluid. It mentions to keep the fluid at a certain level in the expansion tank. The Eaton 750 was superceded by a 751 model. I cannot find any info on the Eaton site. I know for sure the 750 and any parts is no longer available.

    Bookmark   July 21, 2013 at 11:23PM
Thank you for reporting this comment. Undo

Try this...

Section 5

All I could find on the Eaton 750

    Bookmark   July 22, 2013 at 12:20AM
Thank you for reporting this comment. Undo

I just did this on my Simplicity which shares the chassis and transmission with yours. Here is what I posted to Simplicity forum I frequent.

I found an easy way to change the hydro fluid on my 12.5LTH. Here is what I did over the weekend:

1 - warm up the fluid by driving around a bit
2 - open front hood for access to the reservoir
3 - there are 2 hoses connected to the reservoir, hose A at the bottom, hose B connected to side of the reservoir
4 - disconnect both and place hose B to the bottom nipple of reservoir
5 - connect hose A to a vacuum source - MityVac(used for auto brake bleeding) is what I used
6 - keep reservoir filled with fresh oil and draw out old fluid through the vacuum device

In normal operation hose A is connected to a port at the bottom side of the transmission. Hose B to the top side. What I did was used that circuit to draw out the old fluid from bottom and let the new fluid fill in from the top. Using this method there is no need to burp the transmission as there is no air introduced during the fluid change.

I did the fluid change with 30W oil twice, once before and once after hauling 4000lbs of mulch. I plan to do this once a year as it's so simple to do.

    Bookmark   July 26, 2013 at 12:27PM
Thank you for reporting this comment. Undo

Very clever . . . that's how they change out transmission fluid in cars. Very good tip

    Bookmark   August 22, 2013 at 8:21PM
Sign Up to comment
More Discussions
John Deere SRX75 Rider Issue
I have an old Deere SRX75 30" rider with a Kawasaki...
Does anyone else have this problem?
I have a Craftsman riding mower that the manual clutch...
STX46 is dead
I have tried MANY things over the past year to get...
old mtd lawnflite chain drive?
Hey I just bought and old riding mower and lo and bohold...
Dead cylinder
So I have a Briggs & Stratton Engine model number:...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™