Nice forum here and thanks beforehand for any help guys, it is MUCH appreciated and pardon my complete noobness i am a welder/fitter by trade and don't have much (any) experience with heavy equipment though i"m a very competent mechanic so i'm not completely useless in this regard..just a matter of learning My dilemma is this, Im in possession of a late 70's case 780 That I Inherited from my father who died a number of months ago. I spent a lot of weekends at our cottage with him growing up and he would always be using this great backhoe however he never really showed me how to use it when i was younger and he died being the only one knowing its quirks and special places to hit with a wrench. Its leaky and guzzles diesel but works fine including all of the hydraulics which i have checked. however for some reason i cant get it into gear. The brakes are really shoddy so before i have a chance to feel them out i wanted to lift it off the back wheels to try to see if i can get power to the wheels but i cannot. I have checked the mechanical linkeage from the lever in the cockpit to the tranny and its all intact. Any ideas what Im doing wrong/could be wrong? neither reverse or forward in any speed get the wheels turning
I dont know if its a locking differential or not (probably right?) but i should add that no Neither rear wheel receives power
Pardon me for asking a stupid question, but do you have the trans in gear? Also, they had a cutout, tied into the brakes. Might have to figure out where the actuator is and investigate.
Thanks for the response. Yes i believe i am to the best of my limited knowledge. On the forwards and reverse lever (left of steering wheel) there are gears marked so I was just assuming this one lever was the means of putting it into gear Theres not visibly any other gear lever to my knowledge in the cockpit. Thanks for the heads up on the actuator, the pedals are pretty grimey and sticky maybe this is the cause and is something i can look into. Again thanks for putting up with my noobness I really appreciate the help Shim
Welcome to HEF Riddick! There is an air operated transmission neutralizer mounted to the transmission control valve (circled in red). It may have some rust in it & causing it to stick in the neutral position. You may be able to pull it apart & clean it up if it is not too badly corroded. Sometimes a sticky brake treadle valve will also send air to this valve causing no drive. :drinkup