I’ve a hydrovane 15 that has oil bypassing the drive shaft seal, only when it cuts off having reached pressure to its 100ltr receiver. Its well serviced with new filters and new shaft oil seal, but the problem persists, can you help please?
All I can think of is that the shaft is damaged at the point of the shaft seal, so it won’t seal anymore, even with a new seal.
It’s hard to say.. I can’t think of anything else and don’t have any experience with this machine.
Good luck! Would love to hear what the problem was when you find out.