[pauldian]

Question , Speedometer works fine so I pulled the speedometer housing on the transmission and looked at the gear and it looks OK. Went to put it back in and it won't slide into place ? ( I guess it never did ). If I need to change the drive gear what is the plan once the pan is removed ? The Transmission is a 200-4R that was just installed,but since installed the speedometer doesn't work.
It looks to me that the driven and drive gear don't mesh ? Any help would be greatly appreciated..... Much Thanks Paul.
:flag6:

 

[57driver]

Pull the Governor

You will have to pull the Governor of the 200 once you drop the pan to inspect it. Hang on for a few minutes and I will dig through my rebuild photos that I took when I rebuilt my 200-4r a couple of years ago and I will give you details...

Driver.

 

[57driver]

Pictures of the Governor cover and gear(s)

Once you pull the pan, you will see the governor cover towards the rear of the valve body area. It is secured by four screws. See area circled in RED in the first photo. The governor will twist and pull out of it's bore, and will probably actually drop free all by itself if you are on your back under the car.

It is important to note that the governor gear is a combination gear. The small diameter upper gear is driven by the output shaft of the transmission, and the larger diameter lower gear is actually the speedometer drive gear. The gears are a single piece and are color coded to denote their number of teeth, for speedometer drive purposes. The small end of the gear is actually always the same on all 200's.

Once you have the governor on the bench, inspect the large diameter gear to see if any of the teeth are damaged. If those teeth are OK, then the gear that plugs into the bullet on the side of the transmission (the driven gear) could be damaged.

Another simple test that you can do before you pull things apart, is to put the car in neutral (while on stands of course) and turn the drive shaft by hand. You should be able to see the small hollow square in the end of the driven gear turning. Just to be sure that the gear is not mostly stripped out internally, you can even put a very small flat blade screwdriver inside the hollow square of the gear and try to back drive (turn it) it against the drive gear. If you can turn the small gear by hand, then it is very likely that the teeth are torn out. Post a couple photos if you can. Good luck!

Driver.

 

[pauldian]

57 Driver : Thank you so much for the information and the great pictures. It
may take a week or so before I get to work on it but with the information you
provided I"ll get er done. Will let you know the results when done.
And a thank you to all that answered....:shakehands:

 

[pauldian]

Once you pull the pan, you will see the governor cover towards the rear of the valve body area. It is secured by four screws. See area circled in RED in the first photo. The governor will twist and pull out of it's bore, and will probably actually drop free all by itself if you are on your back under the car.

It is important to note that the governor gear is a combination gear. The small diameter upper gear is driven by the output shaft of the transmission, and the larger diameter lower gear is actually the speedometer drive gear. The gears are a single piece and are color coded to denote their number of teeth, for speedometer drive purposes. The small end of the gear is actually always the same on all 200's.

Once you have the governor on the bench, inspect the large diameter gear to see if any of the teeth are damaged. If those teeth are OK, then the gear that plugs into the bullet on the side of the transmission (the driven gear) could be damaged.

Another simple test that you can do before you pull things apart, is to put the car in neutral (while on stands of course) and turn the drive shaft by hand. You should be able to see the small hollow square in the end of the driven gear turning. Just to be sure that the gear is not mostly stripped out internally, you can even put a very small flat blade screwdriver inside the hollow square of the gear and try to back drive (turn it) it against the drive gear. If you can turn the small gear by hand, then it is very likely that the teeth are torn out. Post a couple photos if you can. Good luck!

Driver.

I took the driven gear out and still could not get it to go back in and seat. I also tried two other gears with a different number of teeth , no luck !
As a last resort before trying to change the drive gear I ordered a new speedometer housing as the one in the trans was made of plastic and looked like a piece of crap. Put a new steel bullet in and turned the gear with a small screw driver and everything went into place. Speedometer is now working.
Much Thanks. Paul :shakehands:

 

[57driver]

Glad that you got it working

I have never seen a 200 with a plastic speedo bullet, so it is very likely that your bullet is from another transmission. Glad that you got it working.

Driver.