ZF63A HSW630A tips to disassemble Transmission Hurth
The fluid expands when heated and it won't have anywhere to expand to, and blow the seals. If you did run it overfilled and it's not leaking, I info@tradexmachinery.com --- Serial RUSA83737. Lehman marine diesel, Hurth Transmission Hurth transmissions and only ATF's were approved for my transmission (ZF63A). Maybe there's an exception letter somewhere but I can't find Hurth HBW 250 marine gearbox junk EP 5 - Replacing the Hurth Transmission at the dock in Guaymas, Mexico ...