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16 Jan 2020
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Forum for Saturno

TOPIC: Overheating - Water Pump

Overheating 1 year 9 months ago #7120

  • Joachim
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i suppose it would be a good idea to check first if the engineis really getting hot or if it's only the gauge :)
When the needle is in the red area your fan is not running?
That might be a hint to watch the gauge i think.
Maybe it's the sensor.
There are new ones from scooters available.
But ... keep an eye on the water pump.
The fan is switch on by a sensor in the radiator.
When the pump has a problem the water flow to the radiator may be suffering.
So the radiator keeps cool while the engine is overheating and no fan will help
I somewhere have a list of resistance over the temperature.
If you have an Ohm-meter you may check your sensor in the cylinder head first

ciao Joachim

found it....

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Overheating 1 year 9 months ago #7121

  • MikeW
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Problem found!

I decided to check that the water pump and thermostat were ok before going any further and found out that the pump was seized solid. My luck is holding out, the consequences could have been a lot worse :)

Now to pull it and see if it's possible to rebuild it.

Can someone confirm the bearings and seals required? I've found other posts on rebuilding the pump but want to make sure before ordering parts. Not sure if I'll be able to get the seals in Australia either so suggested suppliers would be welcome.

Mike

Mike

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Overheating 1 year 9 months ago #7122

  • Kano Nordi
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I bought seals from www.southcoastseals.co.uk/Mechanical-Seals and the bearings should be much easier fI used SKF just because they were easily available here in Nigeria.
Just remember when you want strip the pump you are pushing the shaft out towards the impeller end not pulling the pulley off and try not to break the pump housing, I use a 20mm thick steel flange with a hole of the same diameter as the pump location spigot to press against and have only used a vice to press them apart and re-assemble.
Good luck
John

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Overheating 1 year 9 months ago #7123

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congrats :(
You may dismount the pump and have a look.
Maybe the sealing is still alive and only the bearings have gone.
I have ordered new Burgmann sealings but they will deliver in march :(
The new ones are a little bit shorter than the old ones and will have the same dimensions as the original one, at least i hope so ;)

ciao Joachim

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Overheating 1 year 9 months ago #7124

  • nig
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Be gentle removing the pump, as they get stuck and are a little fragile, take it slow.

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Overheating 1 year 8 months ago #7169

  • MikeW
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I managed to remove the pump after some effort and it looks like the bearings have collapsed allowing the shaft to tilt to one side. The impeller seems fine and I can only pray that the shaft is straight.

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Mike

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