39m schwing. 9" rams. Every year it's the same story since the pump was new. First time it the temp goes below freezing the rams leak . 

It did just the same on mine i taught it was because they were getting old.Put brand new two weeks ago and no leaks since then.My old rams were 10 month old ,900 hours ,2000-2500 sq meter pumped.

Don't fill the water box past the bottom of the ram seals.Year round

I just changed my cups, they were leaking quite a bit ...

 Try hot water in the water box, let things warm up.

 Depending on your yearly yardage, that might not be bad.

Changed out the rams , diff packing , and scraper. New rams and packing logged in at 325,790 yds since new and 19,253 on the changed out rams.