Hurth HBW-5 won't shift - SailNet Community

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Old 04-16-2010
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mwielicki is on a distinguished road
Hurth HBW-5 won't shift

Hello all,
I just recently bought a 1984 Catalina 36 with a M-25 attached to a HBW-5 transmission. After some issues shifting and a long motor back from catalina I could not engage forward or reverse. I managed to break the lever free physically and was able to shift from forward to neutral to reverse with relative ease with the motor at 800 rpm. Yay!!! But again the next day there was nearly no way to get into forward or reverse. My plan is to break the lever free again and run the motor in reverse to warm up the oil and then flush it and fill with new high grade ATF. If that doesn't work I think I am in need of a new tranny??? Does anyone have any other suggestions before I shell out 3-4k??? Also does anyone know what transmission would replace a HBW-5 without too much hassle, fitting it to a Universal M-25? Thanks!

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Old 04-16-2010
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Call ZF to find the cross reference for a new one. I replaced the HBW50 that was on my M4-30 (Universal) and with core refund, I cost about 1,200. Worth it if you can't get yours unstuck. and when you do the job, be sure to replace the clutch-like plate that's attached to the fly wheel - I forget what's it's called, a 'damper' maybe. anyway, good idea to replace it since you're already armpit deep in the engine.

good luck.

Here's a link that may help:
ZF Transmissions from Marine Parts Express
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