stuck odometer, type 44, infamous gear is intact - Update

[kbogach]

Update:
 took apart another odometer from 100 '90 (got it at junk yard a year 
ago).  Found out that I put in the gear into odometer from S4 in correct 
position (I suspected otherwise).  At this point I stuck without 
oscillator and oscilloscope.   A few minutes ago I bought them on 
ebay.   Hopefully they are in working condition.  Price was not bad - 
$200 for both.    Reminder:  I need to find out why odometer is 
intermittent while speedo and the gear (usual culprit) are fine.
I don't like replacing parts with ones I got from junk, in general, if I 
don't understand  nature of the problem.  You never know what other 
problems you might  introduce.   If you are not that picky as I am, you 
still would not be able to replace speedo/odometer unit from type 44  to 
UrS4 or visa versa.  They have different connectors location.  UrS4 has 
4 pins togeter, 200 tq has 2 pins in one location and another 2 in 
another.    But you can solder out wires for speedo's galvanometer  from 
speedo/odo PCB and swap mechanical part - it seems to be same.   But I 
am not going to play with it.  After 2 years of not working on my cars I 
am thrilled to find the problem.

Disassembling notes: 
arrow on the speedo from S4 came off relatively easy.  It seems to me, I 
don't remember for sure as it was about 10 month ago, it came off when I 
pulled it with fingers.  On the type 44 speedo, no that the arrows are 
different, it did not come off even after prying with little, filed 
thinner open end wrench.  Black plastic cup came off instead with little 
piece of arrow base.   This cup is fused to the arrow base in 3 
points.   Then I heated top of the pin with small soldering iron while 
pulling the arrow up.  Plastic melted a little and arrow is off.   After 
that I grabbed the tiny tube-like shaft of the arrow with small pliers 
and pull it off from the speedo shaft.   On S4's speedo that stub came 
off with arrow.   After that I put arrow shaft on the speedo shaft, 
heated a little and put the arrow back on the shaft.   After you pulled 
the arrow shaft with arrow or without arrow off the speedo shaft one 
time it will come off easy while you pull with fingers.  But it sits 
tight enough to stay in place on a car.   Black cup was still snug on 
the arrow, so I did not use any non-drying glue which I would use otherwise.


Cheers,
Konstantine