[RMS]

Hi
I am new to this forumn
My son have bought a Aerox YQ50 Scooter and we are having problems with the cooling system
( I am not experienced with liquid cooled bikes)
We have a leak from the water pump into the casing behind I have a W/P repair kit on its way.
Hopfully the repair will fix the leak. I have also noticed that there is a "Thermo Switch" coming out
of the head which is disconnected. When it is reconnected the red warning light (no gauge) comes on
even when cold.
A What does the switch do? does it just indicate when the engine is hot or does it switch on the water pump?
B Does the water pump work all the time or at a set temp?
C Is it likley the switch is duff
D Is there a Thermostat Do I need to take the head off to get to it Presumably it opens up at a set temp
to allow full flow of water

Any Help whould be of great help in stopping we look a fool to my 16 year old Son

Regards Richard

[oldgitonabike]

Hi and welcome Richard, sorry though I cant help with the scoot, hopefully someone will chip in.

...Paul

[Vez]

RMS, on 16 March 2010 - 01:26 PM, said:

Hi
I am new to this forumn
My son have bought a Aerox YQ50 Scooter and we are having problems with the cooling system
( I am not experienced with liquid cooled bikes)
We have a leak from the water pump into the casing behind I have a W/P repair kit on its way.
Hopfully the repair will fix the leak. I have also noticed that there is a "Thermo Switch" coming out
of the head which is disconnected. When it is reconnected the red warning light (no gauge) comes on
even when cold.
A What does the switch do? does it just indicate when the engine is hot or does it switch on the water pump?
B Does the water pump work all the time or at a set temp?
C Is it likley the switch is duff
D Is there a Thermostat  Do I need to take the head off to get to it Presumably it opens up at a set temp
  to allow full flow of water

Any Help whould be of great help in stopping we look a fool to my 16 year old Son

Regards   Richard

Hi Richard and welcome.


Im not familiar with the scoot in question but i can answer a few basic principles.

A: It's usually just a visual indication of when the scoot overheats so you pull over and let it cool. 

B: The pump should run all the time the engine is, unless its a really bad design, but thats unlikely.

C: Depends on the design of the switch. Usually they are just a simple bi-metal switch like you have in your Iron or kettle and don't break often due to their simplistic design. But there may be more complex designs around.

D: Yes there should be a Thermostat, possibly in the head, i don't know to be honest. When a thermostat breaks they tend to stay in the open position though.

E: Parents always look like a fool to teenage kids no matter what they do, if it isn't this it will be something else .. its an age thing. But i'm probably preaching to the choir  




Hope this helps. 

Vez.

[RMS]

Ves

Many thanks for your reply

And I agree about point E But just trying to dodge
the "looking a fool thing" as and when I can
small Victories

Thanks again
Richard