Join Date: Jan 2015
Location: Between Missouri & Kansas
Re: HELP 345 Hydralic fluid change
Those John Deere dealers have a way of making money off those that come in the parts dept. eager to buy their story on what is good for the customer. Of course, they will tell, you need 5 gals. to fill the K70A transmission when actual it may take about 4-1/3 qts. to fill the unit. That is if you have open the small drain plug under the trans. and the filter plug to remove the fluid.
The sad part on this draining the transmission, is the fact all the "bad stuff" like metal shavings... if there are any from worn parts, are left behind in all the small areas that cannot be drained. The only way to really clean/drain the transmission of any bad stuff, is to remove the K70A and turn it up-side-down and drain it from the "fill tube" hole. The problem with that is, there's a good chance all the "operation adjustments" will be changed and there's some more troubles you will find.
I have a spare K70A transmission...about 400 hours on it...that I used in exchange each time I need to change the fluid. I remove the transmission from the 345, replace with the spare ono that has been completely "opened up" and cleaned of all the fluid and bad etuff...if any. Then I take the unit I removed and open it up and clean it also and store it in a plastic wrap and in a carton design for shipping the transmission for the next fluid change. Lot of work, but, I have a clean and new parts if they need replacing.