Posted by Lanse on March 01, 2017 at 18:59:32 from (99.190.213.134):
Hi All,
So tonight I'm seeking advice on finding a replacement transmission for my dump truck (Picture of current transmission at the link in this post - 1984 Ford F700, 4 speed manual, 370 gas engine). It sounds like a (broken) bulldozer in first and reverse gears, and recently as I've started getting it road worthy, I've discovered that it grinds often going into gear... Its hard to describe, its like I go to shift and the next gear "isnt there", but what "is there" is a loud grinding noise where there should be the feel of the transmission going into gear. For example, just today, I go to start driving in second and try to shift into third:
>Move shift lever >GRRRRRRRRRRR >Abort, move lever back to neutral (clutch still in) >Move shift lever >GRRRRRRRRRRR >abort, move lever back to neutral (clutch hasnt been let out yet) >Move shift lever > (Feel Gears Mesh) >Life is good!
I make the same motion every time. Ive driven old tractors where its hard to feel the transmission guiding the shift lever to where its supposed to be for the gears to engage, but its not like that. I can clearly feel the lever moving where its supposed to be, except theres often a loud grinding once I get there. It's never *not* gone into gear, but sometimes it takes 2-3 tries before theres a gear there for a change, instead of the sound of grinding.
Any ideas? I'm planning to replace the transmission regardless, but I'm still curious what could cause this problem, as I've never seen anything like it before (although thats not saying much haha). Does anyone recognize any of the markings on this transmission? I bought the truck cheap (~$2k), spent a little getting it fixed up (~$1800 in parts) and its running really well now. Since I'm using it for my business, I'd like to just buy a properly rebuilt transmission and be done with it, but I dont know where to look. I found a couple of used/salvage ones, but they're very expensive and from trucks which often have more miles than mine and likely wouldn't be that much of an improvement...
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