The Ford Barn

deuce295 · 05-13-2019, 02:45 PM

My oval speedometer will sometimes bind up when going in reverse. Snapped my drive cable. It seems to work just fine going forward and seems to indicate speed good but when I go in reverse it will lockup sometimes. Curious if anyone who has been inside one of these would have any input. Wondering if there is an area where there could be a broken tooth on a gear perhaps. Just curious if anyone has any thoughts. Will be pulling it out as soon as i get a little time . Thanks.

burner31 · 05-13-2019, 08:21 PM

You have two gears in there that work the speedometer, the drive gear, the big one, and the driven gear, the small one. You may have a chipped or broken tooth on one ir both. You can pull the small one and check it, the big one can be check thru the hole, jack the rear and rotate tires to see all the gears on the big one.

Jacksonlll · 05-14-2019, 06:06 AM

It's probably your main shaft in the speedo. They bind up over the years and it is very hard to free them up. Try to turn your speedo drive with your fingers. Bet you can't. It is a big deal to get that shaft out without messing up something else. You can spin it and try to get oil in there. Good luck.

rocket1 · 05-14-2019, 07:36 AM

I would take the plug out of the back of the housing,the housing is slightly peened over it.Dig out the dried up grease and relube,I used lubriplate which seemed to work just fine,it might solve your problem.

katy · 05-14-2019, 08:55 AM

Quote:

I used lubriplate which seemed to work just fine,

Personally, I don't like Lubriplate as it likes to separate, the oil oozes out of the thickener.

papanick · 05-21-2019, 08:08 PM

Sponsored Links (Register now to hide all advertisements)

Give that a try but if that dose not work email me and I can service it. [email protected]

05-13-2019, 02:45 PM	#1
deuce295 Member Join Date: May 2010 Location: Appleton, Wisconsin Posts: 58	Oval speedometer binds in reverse My oval speedometer will sometimes bind up when going in reverse. Snapped my drive cable. It seems to work just fine going forward and seems to indicate speed good but when I go in reverse it will lockup sometimes. Curious if anyone who has been inside one of these would have any input. Wondering if there is an area where there could be a broken tooth on a gear perhaps. Just curious if anyone has any thoughts. Will be pulling it out as soon as i get a little time . Thanks.

05-13-2019, 08:21 PM	#2
burner31 Senior Member Join Date: Dec 2014 Location: Shawnee, Ok Posts: 3,471	Re: Oval speedometer binds in reverse You have two gears in there that work the speedometer, the drive gear, the big one, and the driven gear, the small one. You may have a chipped or broken tooth on one ir both. You can pull the small one and check it, the big one can be check thru the hole, jack the rear and rotate tires to see all the gears on the big one. __________________ Keith Shawnee OK '31 SW 160-B

05-14-2019, 06:06 AM	#3
Jacksonlll Senior Member Join Date: Jul 2012 Location: Michigan-- Member of Oakleaf of MARC Posts: 1,686	Re: Oval speedometer binds in reverse It's probably your main shaft in the speedo. They bind up over the years and it is very hard to free them up. Try to turn your speedo drive with your fingers. Bet you can't. It is a big deal to get that shaft out without messing up something else. You can spin it and try to get oil in there. Good luck.

05-14-2019, 07:36 AM	#4
rocket1 Senior Member Join Date: Mar 2014 Location: Midland Park,N.J. Posts: 1,108	Re: Oval speedometer binds in reverse I would take the plug out of the back of the housing,the housing is slightly peened over it.Dig out the dried up grease and relube,I used lubriplate which seemed to work just fine,it might solve your problem.

05-21-2019, 08:08 PM	#6
papanick Senior Member Join Date: Mar 2012 Location: gouverneur n,y, Posts: 2,756	Re: Oval speedometer binds in reverse Sponsored Links (Register now to hide all advertisements) Give that a try but if that dose not work email me and I can service it. [email protected]