Ron is always right...

[Kern Dog]

I have a few of those speedo gears, Myk. They are ones I'd never need since I run lower gears in my cars & trucks. I'd send you one FREE if you pay the shipping. Shouldn't be more than a few bucks. I'm in Northern California.
Greg

[jlatessa]

My seal kit came in from americanhotrodsolutions and was an easy
replacement, inner and outer seals went in easily.

Got my new speedo gear Friday and everything is back in the trans.

Life is good....Joe

[2Luke2]

Joe did you happen to get pictures? We are still curious where the inner seal goes.

[Dino]

Thanks for the tip Joe, I'm ordering a kit now.   

[myk]

Just got my 'speedo gear in; just waiting for the seals.  Now where the hell did I put that new 'speedo cable...

[2Luke2]

We got our new seals in, but we were kind of concerned... When we put the clip back in it didn't seem to have a place to snap into. It was just kind of held in by the tension. Is that correct or should it slide down enough to snap in somewhere?

[jlatessa]

There is a recess for the clip and seal, it prevents the seal from climbing the shaft.

I removed the inner seal with a thin wooden dowel, left the original clip in
and was able to work the new seal into the recess below the clip,
the seal is pretty flexible, just be careful and make sure the seal seats in the recess.

Also the seal goes in one way only, look at how the old one is in first.

Joe

PS. go to MOPARTS Tech Archive, Auto Trans, Speedo gear, there are pics there of seals
and orientation of housing for different gears

[myk]

 

So, I go through all of the effort of buying a 27 tooth speedo gear and have it shipped pronto, only to find that the Charger already HAS a 27 tooth speedo gear that's in better shape than the one I just bought.  The retainer was "clocked" wrong so I adjusted that, but I'm curious: is the retainer supposed to be flush with the transmission case?  Because I could not get the thing to seat all of the way.  I tried to tap it in with a soft hammer but it wouldn't budge; not that I could get enough room to take a proper swing at it anyway.  Also, I expected to find a shredded o-ring in the pinion housing but it looks fine-I don't understand why it's leaking.  Could the leak be coming from the speedo gear itself?  I'm assuming no, because the speedometer cable seals that part of the retainer?  

Well, here's to hoping I installed the speedometer cable correctly.

Edit:  I just got back from the local cruise night and I'm disappointed because the speedometer doesn't work at all. Someone told me I have to guide the speedometer cable into the speedometer gear.
Is it possible to install these things wrong?

[myk]

[2Luke2]

I would do the following:
- Check to make sure the pinion selector on the on the outside of the housing is set to the 27 tooth range
- Check the end of the speedo cable and make sure it's not rounded or broke off and it's sticking out enough
- Jack up the rear of the car and take the pinion out and make sure it's still in good shape

Other than that you might be dropping the steering column out of the way to check the other end of the cable to make sure it didn't come off the gauge. You can probably put the transmission side of cable in a drill and drill really slowly while someone looks at the gauge to see if it's working as well.

[firefighter3931]

Myk, i'm starting to suspect your speedometer is out of calibration and the most recent issue could be the speedo or the speedo cable itself. 

Ron

[myk]

I hope it's a simple matter of the speedometer cable not being inside of the pinion gear all the way.  Thanks guys...

[Kern Dog]

If you insert the end of the speedo in a drill and spin the drill backwards[/i, the speedo should move if everything is fine with the cable and the guage.
The speedo housing is designed to accomodate a range of pinion sizes. The pinion is inserted in the hole which is cast off center. This allows you to rotate the housing until the pinion makes contact with the output shaft of the transmission.
What I do: Make sure that when you insert the pinion housing into the trans case, make sure that the pinion is NOT against the output shaft. This will help you tap the housing into the case to sit FLUSH. Using a thin chisel or drift, tap the housing to clock its location using the thin groove in the housing as a stop for the chisel.

[myk]

Alright, I'll climb under there again ASAP and give it another go.  By the way; is it possible to damage the speedometer cable by bending it TOO far?  I may have bent it too far while shoving it into the dash and the engine compartment...

[Dino]

Myk also be aware that you can lock the speedometer if you put too much pressure on the cable.  When the speedometer is out you can see a big disc on the back that needs to be pulled back to release it.  Guess how I found this out.      

[myk]

Myk also be aware that you can lock the speedometer if you put too much pressure on the cable.  When the speedometer is out you can see a big disc on the back that needs to be pulled back to release it.  Guess how I found this out.    

Thanks for the advice.  

Well, I pulled the 'trans end of the cable and spun it with a drill; the speedometer moved and held steady depending on how fast the drill was running.  Now I know the cable and 'speedo work.  Next is a test drive to see if the speedomter will work now, although I don't think I did anything differently this time other than absolutly making sure the 'trans end of the cable went into the pinion gear.  By the way-why is the pinion gear adapter so hard to get back into the transmission?  I had to line up a socket and about three feet of extensions so I could whack it into place with a mallet...

EDIT:  IT WORKS IT WORKS IT WORKS!  My speedometer works again!  What I like is how smooth the speedometer is also; before the original cable broke, it bumped and jerked it's way up the speed range, and even when I settled on a speed the needle continued to go back and forth as if it was scolding my attempts to drive faster.  Now here's something I've never seen before, how does THIS happen?