23 - . Back to basics

The circuit water temperature gauge works with a stable voltage ? 10 volts according to the wiring diagram.




After checking the temperature sensor and the little clock assumptions are not more guilty than the " Gauge voltage stabilizer " , the surprise is that the parts must have been a problem since it did not work.

Given this difficulty choose to open the original regulator and see what's inside and surprise Oh ! A wonderful regulator ? mechanical tension ... defective. Operates with a bimetal and a resistance wound on the bimetal to make the circuit open and closure to achieve effective V 10V.



Curious that Industrial Engineers invent things ... . Obviously here is to put technology. Let's see what they do other engineers .Telecomunication Eng. for example.

Hands On and a visit to Radio Onda, like old times, soldering iron, tin, tester and work . Old radiopitas never die.




Let's use an electronic voltage regulator with output voltage 10 V , grace is in place within the capsule where the mechanical governor was .

TO220 Package

With this circuit we obtain 1 Amp output is more than enough to feed the little clocks .



 Clean container and all necessary materials :

LM7810 integrated circuit
Condenser inlet 330 nF , 35V
Condenser outlet 100 nF , 25V
macaroni and shrink
rivets to close the set

The wiring is simple, the input (12 V ) is located on the left integrated circuit, the center pin is the ground and the right pin is stabilized and short to 10V output . The circuit also has a thermal overload protection .

Riding on the 7810 aluminum cap allows us to use the capsule as radiator



We now have a stable 10V voltage and temperature gauge work properly . Externally it is indistinguishable from the original of 1960.














VERY IMPORTANT , MUST NOT BE MOUNTED IN THE SAME PLACE IS THE ORIGINAL , IS TOO HOT AND ELECTRONIC LOCATION AND HEAT HAS NO WEAR WELL .

22 - . Finalizing details ... but something strange appears

We have finished repairing the engine.

 Along the way there have been problems and opportunities.

"BECAUSEAS" changed all sleeves as well change the stainless steel water pipe :



... and also will have to watch the fuel level and water temperature gauge sometimes fails:







" BECAUSEAS" we have taken the gearbox has also replaced the rubber block clamp .








And of course, spark plug wires

"BECAUSEAS" premiered new battery, will we replace the battery holder drawer .











At address, brush and horn switch mechanism in the steering wheel hub , as it was broken and occasionally the TR decided to start their own concert horn . Also have changed the spring clip of the zipper and all associated hardware .
























Have also been changed all gaskets and rubber bell gearbox .













It seems that everything is under control but the water temperature gauge to work properly .





Do not loose the next chapter.