Re: [Amel Yacht Owners] Re: ZF transmission

Patrick McAneny

Bill, I am getting ready to change the fluid as well. I have not found a plug ,could you confirm there is one and where, I am surprised that it only takes 3/4 of a liter. I am sure I was told to use 40w oil in the past, its been awhile . I did not think you would need to change it yearly, I am over due by a couple of years. I have 150,000 miles on my truck and I think I have replaced the fluid twice . I wonder if that is why, I needed a new trans a few years ago. I will start changing it ,when I change my oil.

-----Original Message-----
From: greatketch@... [amelyachtowners]
To: amelyachtowners
Sent: Sat, Sep 1, 2018 4:46 pm
Subject: [Amel Yacht Owners] Re: ZF transmission


I think I remember that you have the Volvo TMD22 engine.  If so, this applies to you...

You have to be a very careful talking about the ZF transmissions.  The ZF25M transmission that came on the Volvo TMD22 is a manual shift transmission, and holds about 0.75 liters of DEXTRAN IV automatic transmission fluid, NOT 90 weight oil.  The same exact machine was called an HBW250 before ZF and Hurth joined forces.

Other engines used a ZF25 transmission, which is a hydraulic shifting model with larger horsepower capacity and a completely different design.  It causes no end of confusion with model numbers so similar and actual designs so different!

The recommendation for change interval in my manual for the ZF25M is "Once a year." There is no change interval recommended based on hours of operation.  

Bill Kinney
SM160, Harmonie
Annapolis, MD, USA

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