Tested Gauge Clusters

[MudRunnerTD]

After a long break, I've had a couple of days mucking around with the cluster that @Rossco sent me. I unfortunately found that removing the needle off the tacho, destroys the bearings.

Bugger! They have designed the collar to protrude under the hub of the needle, so there is no way of removing it, without the whole spindle sliding out.

This will make it a lot harder to conduct repairs on the PC boards of both the speedos and tachos.

So, if anyone has had success in removing the needle please let me know how you did it.

I have also found that the TD42 diesel cluster loom sockets aren't compatible with the RB30 and TB42 clusters. so I will have to find a way to make adaptors for the test bench. I'm guessing the RD28 is different again.

On a positive note, I redesigned the electronic speedo signal generator to produce a stronger, smoother output. I also found that a 10k ohm resistor across the output kills any feedback voltages from either the sig gen or from the speedo, which is a bonus.

@liftlid you might find this thread of interest mate. I have that cluster out and sitting on the camper for you to pickup mate. The Speedo is all but Gone but the Tacho and other gauges are there and the cluster is a TD cluster.

@mudnut, yes i went through this when i did my ground up build and also failed to get the needle off damn it. I was though able to correct the speedo calibration (needle position at 100km/h) by simply driving with the face cover off and man handling the needle and spinning it on the shaft. I was able to do this by spinning the needle past full speed and took a 5degree spin on the shaft or so. L then let the needle go and was able to do this in either direction to get it bang on at 100kms running 35s.