Instrument Cluster Question

[Alex Abreu]

Hi, 

 

I have a 72' 1602 that has issues with the speedometer. It wont get past 60km/h and the clock  doesnt work and the reserve light for the gas also does not go.  

As far as you know, is it servicable?   Are the clusters from post 73 interchangeble with this model? What am I facing?

[Alex Abreu]

As per Wallotnesch the P\N is A62121353423. Than again, they resemble each other with small diferences.

 

So, can I get away with a used unit?

[Alex Abreu]

Oh, I wont be doing the repair myself. But the company I found said it may not be repairable.

 

[John76]

The clock and speedo can usually be repaired/rebuilt.

The "low gas light" problem might be just a bulb issue (does it light up when the parking brake is on?) but most likely the fuel sender in the tank.

[Alex Abreu]

No, it's dead alltogether. I am dropping of the speedo today, a bit scared since the guy said it was a tricky speedo and not always fixable.

 

[jimk]

If the fuel and temperature gauges are not working as well, check for 12V at the 12pin round connector that plugs into the back of the cluster.  It's the pin at 11 oclock looking at the connector  (pin 1 on the wiring diagram) and green wire. 

Switch key on and check for voltage (don't leave it on for a long time because if the ignition still has points, the coil can overheat.  If no voltage, then it's most likely at the fuse box as others have said.  

[ray_]

1 hour ago, Alex Abreu said:

No, it's dead alltogether. I am dropping of the speedo today, a bit scared since the guy said it was a tricky speedo and not always fixable.

 

There's nothing tricky about the speedo. Try another shop.

[Alex Abreu]

11 minutes ago, ray_ said:

There's nothing tricky about the speedo. Try another shop.

That was my decision, had a recomendation for a new shop. Diferent talk alltogether, showed experience and cheaper estimate too.

But, what I need is the job done. Hope it needs just a good cleanup job. We will see.

[Alex Abreu]

Thanks!

[Mike Self]

3 hours ago, ray_ said:

There's nothing tricky about the speedo. Try another shop.

+ 1.  I've had mine apart several times, both to fix an inoperative odometer as well as fixing the speedometer.   Not rocket science inside, just common sense and a little knowledge of how a speedometer works.

 

The clock might be an easy fix.  It's actually a mechanical, wind-up clock that's wound by a solenoid.  The winding up lasts only a few minutes, but when the clock spring winds down, the solenoid is energized by a set of points (like a relay) and winds the clock again.  Usually the problem is the points are burned/dirty and won't pass current.  That's an easy fix once you remove the clock from the cluster and then its outer housing  You'll see the points.  You might also want to oil the gears in the clock itself; use clock oil (only!!!) and use it sparingly.  Bet you can get it going again.  

 

mike

 

mike

[Alex Abreu]

I got an estimate of 60 euros for the service, and the person I talked to seemed to know the cluster inside out.

Maybe next time I'll venture. Not this time. But thanks! 

[popovm]

1 hour ago, Alex Abreu said:

I got an estimate of 60 euros for the service, and the person I talked to seemed to know the cluster inside out.

Maybe next time I'll venture. Not this time. But thanks! 

 

Good deal! 

[Alex Abreu]

http://www.ramoainstruments.com/

 

Edited February 2, 2023 by Alex Abreu

[Alex Abreu]

Mine is 1/10 as bad, prospect is good. Let's see for real.

[Alex Abreu]

Dropped it off today, 8 day timeline...


this seemed impressive