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Subject: 8n left brake grabs or locks up

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Wilson    Posted 06-29-2018 at 20:10:45 [URL] [DELETE]        [Reply] [Email]  
  • 8n left brake grabs or locks up
  • Hi,
    I am buying a 1950 ford 8n in fairly good shape but it sat for the past decade.
    The owner drained all the old gasoline out and added a few gallons of fresh gas and pull started it.
    It runs nice and strong but appears to not be charging.
    The right rear axel seal seems to be leaking oil all over the right wheel and that breaks barely works.
    The left wheel doesn't look oily but if you just lightly touch break it grabs and locks up and doesn't release easily. The axel bushings and seals feel worn when I pull each rear tire back and forth so I realize that a brake and rear seal job is likely best thing to concider. However can I spray brake cleaner in the left drum to lessen the grabby problem temporarily???
    I would just like to run this machine a while before diving into major repairs and I have never done a brake and rear seal job before?
    Thank you,
    Wilson

    Tim Daley(MI)    Posted 06-30-2018 at 06:03:45 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n left brake grabs or locks up
  • If the tractor was setting for ten years and the battery never maintained, chances are it is dead. There is a checklist in our HOW-TO's forum on what to do when buying a used tractor and also what to do if it has been setting for a long time. Simply putting the battery on a charger does not mean it is good. If the battery has been in it for years, get it to your starter shop to be tested on his bench equipment. If it is bad, replace with a good brand, GRP-1 if 6V, GRP-25 or GRP-35 if 12V. On your sticking brakes, I'd try to back off the adjusting screw first. Access is on the back side of the brake drum thru a window. Original drums had a rubber plug to keep dirt out, but I've seen many that are missing. It is very important too that you invest in the essential owner/operator manuals for your 8N. All 9N/2N/ and 8Ns, up to early 1950, used the front mount distributor, and were all originally 6V/POS GRN systems. After early 1950, FORD went to a side mount distributor, moved it to the RH side of engine from the front, and moved the generator to the RH side. Many N's have been switched over to 12V/NEG GRN systems. It is equally important that you know which setup you have. Either way, it is very important that the electrical system is wired correctly. Simply swapping out the 6V battery with a 12V battery does not make it a 12-volt conversion. Before jumping in head first, get the essential 8N Manuals and read religiously. The I&T F-04 manual, the 39-53 MPC (Master Parts Catalog), and the original 8N Operator's Manual are the most important.

    FORD 8N ESSENTIAL OWNER MANUALS:

    Tim Daley(MI)

    Dean    Posted 06-29-2018 at 21:35:54 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n left brake grabs or locks up
  • Not likely.

    Dean

    Wilson    Posted 06-29-2018 at 22:07:00 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8n left brake grabs or locks up
  • Is there anything I can do to improve left grabby brake without taking off brake drum and rebuilding brakes and axel seals??

    Jack - Iowa    Posted 06-30-2018 at 10:32:00 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n left brake grabs or locks up
  • On automobiles I've driven them in reverse with the brakes applied. Don't know if it might work on a tractor or not.

    Dean    Posted 06-30-2018 at 08:34:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n left brake grabs or locks up
  • Not likely.

    It may improve somewhat with use as the rust is worn away but I doubt it.

    Dean

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