Might be time for a new one..... this thread may have some suggestions

Thanks Alistair, I did read those 6 pages

I had a similar problem, mine was seized so stripped and fitted a new gear wheel and cleaned out all the gunk.
Worked lovely but leaked as you describe. Found that where the spindle goes through the cover there's a rubber seal and it wears a groove in the shaft after a while. So I took mine apart, cleaned the seal then wrapped a couple of turns of electrical tape around the shaft and smeared with silicon grease. I had to stick the seal housing back with ct1 but so far so good, its working fine and not leaking

Thank you, will try to open up once again today

Hello Robert ,

when I open it , I become a other idea
no more water inside the gearbox, I have a seperat tube for the water on the rigt side from the wisherengine

Click image to enlarge

Click image to enlarge

good Frank, thanks, I'll have a look into that, see if that's feasible on mine

good idea

Thank you all , Robert it gives only one place where you can drill for the tube , look at my picture and you must a plastik cover around the tube , it’s white on my picture .

Yes, I've seen it and looked on mine and think I found a drilling spot. What kind of wiper is that on yours?
My Corvette has got the same system, but the wipers are totally different.

The wiper is original, the jets are from a truck

creative!!