[Johnssoftail]

I just purchased a 318 and am in the process of evaluating the condition of it. I changed the oil and filter last night, a no brainer. However I would like to change the hydraulic fluid tonight, I would like to remove as much old fluid as possible. Is there a procedure for "flushing" the system? or just drain, change filter and refill? Unfortunately I do not yet have a service manual.

Thanks
John

 

[khe]

All you need to do is drain the old fluid, change the filter and refill with fresh Type F automatic trans. fluid.

 

[micah]

This is what I run in my 318. John Deere's Low Viscosity Hy-Gard Transmission and Hydraulic Oil ( TY22035 )

 

[Jd318_mazz]

Hi John - You can use either Type F or JD Low Viscosity HyGard. Deere now recommends the Low Viscosity HyGard. It is a better product than the Type F, and Type F is not as readily available in all areas. Simply drain the fluid, pull the filter. When installing a new filter, fill it about half way with fresh fluid before installing it. That helps to minimize any air locks. But before you start putting any new fluid in, you may want to check the condition of the tubing that connects to the sight glass. If it is questionable, I'd recommend installing new tubing. It would be a shame to put new fluid in, only to have the tubing for the sight glass split and cause a leak. After you've put new fluid in, run the tractor and use the hydro levers to help burp the system. It takes between 5 and 6 quarts of fluid. Check fluid level at the mid point of the sight glass at the rear of the tractor. - Dave