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Jan 11

Posts: 61

goldy1976 says:

2004 Giler nexus 500

Hi does anyone no how to fit a new water pump to the gilera nexus 500 ? I have now taken the water pump to 2 bike mechanics and both don't no how to install the water pump seals most of all the one that goes in the shaft using the special tool ! 

HELP :wacko: 

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  • Posted 3 years ago (20 April 2012 17:31)

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Mar 09

Posts: 9015

jaffa90 says:

water pump

Don`t know but kcmc or pdj on here may know,

a water pump (impeller) is connected to a shaft driven from the engine  with engine oil on one side of the shaft and coolant on the other,  pictures would be better for the seal which goes IN THE SHAFT.

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Jan 08

Posts: 7744

kcmc says:

Gilera 500 Nexus 2004

Hi Goldy1976

Don't know whats going on with the mechanics you are using over there?.Anyway the important thing here is to check the impeller shaft for wear(make sure there are no groves cut by the seals,if there are replace the shaft as well as the seals,also there should be no excessive movement with the shaft in the case)as this impeller shaft does not run on bearings it if very important to fit the ceramic seal carefully as this is what the shaft will run on instead of bearings.The special tool is no more than a 15mm diameter flat drift to install the ceramic seal,if you measure the O.D.of a long socket 15mm you will be able to drive it home with that.The other double seal fitting is determined by the fitting a tightening of the impeller itself.Hope this helps?

Good Luck



P.S. just found a on line manual so this should help with things a bit better:smile



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