Hello everyone. I just bought a completely rebuilt model t in an auction last weekend on a whim and now I have a new project that I am extremely excited about. I have two questions. she fires right up but will not stay running for long. I think its a gas problem. the carb is in beautiful shape. I think its the gas not getting fed through. what should my richness be set at? the tank is low so I also feel that could be it. Next... I want to make sure the braking mechanisms no matter how inadequate they were designed work properly so I am redoing the linings on the rear and when I went into the y transmission noticed the brake band spring was not spanning all the way across. I am assuming this needs to be tightened to sit flat? also the spring is older looking than the other two that look brand new. is this spring easy to change?
Wes! Welcome to the affliction! =)
Tell us more about your T, what year is it, what body style, etc.
Unfortunately "completely rebuilt" can mean absolutely anything at all. ANYthing. So!
Gas problem: the tank could be low but really unless it's so low that it's barely wet on the bottom it should run. There's different things on different years: if you have a 1925 or earlier T then underneath the gas tank should be a sediment bulb. You'll want to remove that and make sure that it is cleaned out - there's a brass screen that can get clogged. Then trace your gas line up to the carburetor - make sure that there is not a fuel filter of any kind along the way, they restrict the flow of fuel too much. Look and see what kind of carb you have, then the guys on here can coach you up about what to do with it - could need to have the float level adjusted. It if it a Holley NH, good place to start is to screw the adjustment screw all the way down (gently, not even snug, you just want to know that it's bottoming out) then back out 1-1/4 turns, or 1-1/2. That will get you close enough to be in the ballpark.
Transmission: one of the best things you could do is post pictures! Just make sure that the file size of the picture is at or under 196 KB, site can't handle anything bigger.
Where exactly the band spring is, is mostly irrelevant. It just hanging loose may indicate a problem, but your adjustment of the brake band does not depend on the spring. You want it tight enough that the pedal stops an inch or maybe a bit more above the floor boards. It shouldn't be any tighter than that because the band needs to be loose and not touching the drum when you aren't stepping on the pedal.
Spring is pretty easy to change - HOWEVER!! Select a number of rags to stuff into the side of the transmission so that if you drop the nut or washer they will not fall into the abyss! Also, count your rags/towels so that you get all of them out when you are done.
Take pics and post and give us more info!
Good luck with your new T!
As others have stated on the forum before, read and study the Model T service manual. And then study it some more!
If its pretty much stock always remember to drive it as if it doesn't have any brakes. You can stop a T of course with its stock braking system but its not like your modern car or pickup.
Here you go, Wes. Something for all the new guys: http://dauntlessgeezer.com/DG80.html.
Seth has pretty well covered everything, but you may find 196 KB is still just a bit too big. For me the top limit is 194 KB. I suppose it depends on the equipment or the software you're using.
Steve is right, I don't know why I had 196 on the brain. It's 194.