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Old 13-05-2022, 05:55   #1
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Hurth Transmission Identification

I have a 1995 Beneteau Oceanis 400 with a Perkins M50 mated up to a Hurth Transmision. The ID Plate is completely illegiable. I am assuming that this is the original tranny but I've been wrong before. And I am also assuming its in the HBW series. Does anyone have any direct knowledge about what would have been the OEM tranny for this boat? Additionally does anyone one have any knowledge or experience replacing this tranny with another Hurst HBW series or later model ZF say the ZF 10 or ZF 12 or another manufactures tranny? Any info would be greatly appreciated. If there is an earlier thread that relates to this post post that is still up on the site and you can point me in that direction that wouls also be a great help.
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Old 13-05-2022, 06:22   #2
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Re: Hurth Transmission Identification

Greetings and welcome aboard the CF, Gulf.

? Hurth HBW 10-2R, renamed HBW 125, AKA ZF12M ?
See ➥ https://www.cruisersforum.com/forums...ion-67039.html

And ➥ https://www.cruisersforum.com/forums...ox-153952.html

And lots of literature ➥ https://www.perfprotech.com/blog/tec...ons-and-repair

And ➥ https://www.plaisance-pratique.com/I...Volvo_Gear.pdf
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Old 13-05-2022, 18:15   #3
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Re: Hurth Transmission Identification

GordMay Thanks for your response. I have been through many of the relevant threads on Cruisers Forum but your response has focused my attention on what seems to be the most relevant thread: https://www.cruisersforum.com/forums...ion-67039.html

Thanks very much.
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Old 13-05-2022, 20:18   #4
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Re: Hurth Transmission Identification

Hi, I had a hurth 150 that was slipping, for a few dollars over the rebuild cost replaced it with a PRM, about 50mm longer and somewhat stronger.
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Old 13-05-2022, 20:30   #5
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Re: Hurth Transmission Identification

Thanks for your reply. The link that I included in my reply to GordMay significantly narrows down what Hurth tranny it is/might be. So now I'm looking at what trannys are out there that may work as non-Hurth/ZF replacements. In that link the twin disc MG360 comes up as a direct bolt in replacement and I will look into that as well as the PRM. The 50mm may be a problem. Thanks very much
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Old 16-05-2022, 05:26   #6
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Re: Hurth Transmission Identification

If you post a couple of good photos of the transmission it can be identified as to make and model.
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Old 04-06-2022, 06:55   #7
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Re: Hurth Transmission Identification

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Old 04-06-2022, 06:57   #8
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Re: Hurth Transmission Identification

FPNC, Sorry it took so long to post photos
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Old 04-06-2022, 21:16   #9
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Re: Hurth Transmission Identification

It looks a bit like thatís a down angle gearbox so it would be either a ZF 15MA or a
ZF 25 MA. These both have a Hurth identity so HBW 150MA and HBW 250MA. Because there are 3 different HP ratings for the Perkins Perama engine there were also at least 3 different Hurth gears, the 150, the 250 and for the turbo engine the ZF30 with the same clutch plates as the 250 but 2 more plates on fwd and reverse.
Pete.
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Old 05-06-2022, 06:18   #10
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Re: Hurth Transmission Identification

Thanks Skipperpete, it's a straight shaft, may just look like it's downangle because of the angle the photos were taken. And from all I have read and your reply it would be a HBW 150M. If I didn't mention it prior I will now, the ID Plate that's on this tranny is completely obliterated which is the why for the original post. What would really be the final piece of the puzzle is if someone has one of these installed in their Oceanis 400 of around a 1995 vintage would be a photo of the ID Plate on their tranny. Trying to get an idea of the ratio which is printed on that plate. Thanks very much Peter
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Old 05-06-2022, 08:39   #11
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Re: Hurth Transmission Identification

Rob, Thanks for the response. I have taken a look at the PRM as a possibility. I am assuming that other than the 50mm difference it was a direct match up? Best Peter
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Old 06-06-2022, 05:20   #12
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Re: Hurth Transmission Identification

Hello Gulf 60, nice photos, but they are too small to make anything out.
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Old 06-06-2022, 08:50   #13
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Re: Hurth Transmission Identification

FPNC please see if this link works:


https://www.cruisersforum.com/forums...lbums6155.html
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Old 06-06-2022, 09:14   #14
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Re: Hurth Transmission Identification

That is either a Hurth HBW 125 ( Now ZF 12M) , or a Hurth HBW 10, or a Hurth HBW 150 (Now ZF 15M). The case was the same for all of these models. The seal and clutch kits are also the same. They all came with different reduction ratios. If you can figure the forward reduction ratio you can better ID the transmission.
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Old 06-06-2022, 12:51   #15
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Re: Hurth Transmission Identification

At this point I'm assuming that it's an HBW 150M. It would in theory be the correct match for a 50 HP Diesel. What would really be the final piece of the puzzle is if someone has one of these installed in their Oceanis 400 of around a 1995 vintage, would be a photo of the ID Plate on their Hurth transmission. Trying to get an idea of the ratio which is printed on that plate. Thanks very much Peter
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