Paul Dietrich 19 #1 Posted July 29, 2021 Changed the filter and hydro. oil on my 520 H yesterday. Somewhere I read when refilling the hydro, to leave the filter off until the oil has been added. The open filter mount allowing the air to escape as the oil is being added. great idea, and thanks... 4 Share this post Link to post Share on other sites
Achto 27,601 #2 Posted July 29, 2021 I usually fill my filter 1/2 full & install it before filling the transmission. Might give your method a try next time. Share this post Link to post Share on other sites
953 nut 55,310 #3 Posted July 29, 2021 I always hang a short piece of wire over the fill tube and then insert the funnel, the wire gives a small air gap to prevent the fluid from burping. 1 Share this post Link to post Share on other sites
daveoman1966 3,752 #4 Posted July 30, 2021 Use a small funnel with a 12" drinking straw inserted like this to 'vent' air as oil (ATF) is poured in. Works great. 1 Share this post Link to post Share on other sites
oldlineman 1,481 #5 Posted July 30, 2021 physics 101 Share this post Link to post Share on other sites
lynnmor 7,308 #6 Posted July 30, 2021 I tried all the tricks, now I use Patience and Philosophy 101. Share this post Link to post Share on other sites
cleat 6,046 #7 Posted July 30, 2021 I now fill mine with the filter off. No reason to prefill it as it simply filters the oil coming back to the rear end from the control valve for the hydraulic lift. Share this post Link to post Share on other sites
Paul Dietrich 19 #8 Posted August 3, 2021 Maybe I didn't explain myself totally. Leaving the filter off until the oil has been added works perfectly. You can pour the oil with the use if a funnel as fast as it will go down the funnel. Again thanks for the tip..... Share this post Link to post Share on other sites
