Hi guy's i wonder if anyone can help.

Last week i walked into the garage only to find water on the floor and all around the sump plate of my 2001 Montesa 315. Thinking it was the waterpump gasket i ordered a new one and replaced it yesterday without much joy. After replacing the new gasket and topping it up with coolant i fired the bike up only to find coolant coming out of the inspection hole of the waterpump, water would constantly drip out until the bike was switched off then it would stop leaking.

Is there somthing i have done wrong. I did not use any gasket sealant just replaced the gasket dry I've since removed the gasket again to check condition, everything seemed to be ok but when i put it all back together again, exactly the same problem coolant dripping from the inspection hole.

Any ideas would be greatly appreciated.

Hi

you need to take a look at the waterpump shaft, any marks / scores where the seal has been running and this will let coolant through.

replace this and the seal and put in fresh coolant. not water.

cheers.

Shavey.

Hi Shavey,

thanks for that mate, i've had a look at the waterpump today and checked for scores / marks. To be honest mate i think i might have over tightened the bolts and damaged the new gasket. Bike still leaks through the inspection hole when running then stops leaking when switched off. (only coolant not oil)

Is there a set torque for the four waterpump bolts do you know off ?? i've a got a bad feeling i've been to heavy handed !!

Cheers,

Steve