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Speedometer

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"Norman Hall"

Speedometer
« on: March 12, 2016, 06:45:27 PM »
Hi

Has anyone fixed a malfunctioning Speedometer.?



I have two and both have problems.

The first does not reset to "0", it ends up about 10Km, and, when I check it

with my GPS it is out about 15Km at 40 on the GPS.



The second which I some time ago salvaged is frozen. I can spin it from the

magnet but when I try to make it work from the cable end,  no luck.



Anybody help?



Should not have wanted to go for a ride a month ago!!





Norm Hall

79 TR7 DHC

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Archives provided courtesy  http://www.triumphwedgeowners.org



Major Tom

Re: Speedometer
« Reply #1 on: March 14, 2016, 12:31:38 PM »
well there are likely a couple items.



the speedo needle is put on a jeweled pivot. It is spring loaded,

just like a watch.





if the speedo spring is broken, it is toast. it will go to max and

not return, or you can manually turn it and it won't return







if the jewel is dirty the results are eratic.



you can clean it with some "carb cleaner" carefully, or get a

hypodermic, mix some alcohol and a few drops of synthetic oil. drop

it on the jewels and using low pressure blower blow it off, give it

about 30 sec to soften, repeat as necessary, the oil will lube, the

alcohol will clean.





care, these are delicate. You can do the same thing with the clocks.

except the super light weight synthetic oil on the grear faces and pivots.





MT





At 07:45 PM 3/12/2016, you wrote:

>Hi

>Has anyone fixed a malfunctioning Speedometer.?

>

>I have two and both have problems.

>The first does not reset to "0", it ends up about 10Km, and, when I check it

>with my GPS it is out about 15Km at 40 on the GPS.

>

>The second which I some time ago salvaged is frozen. I can spin it from the

>magnet but when I try to make it work from the cable end,  no luck.

>

>Anybody help?

>

>Should not have wanted to go for a ride a month ago!!

>

>

>Norm Hall

>79 TR7 DHC

>--

>.

>Archives provided courtesy  http://www.triumphwedgeowners.org



Carpe Beerum (seize the beer)  

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org