rebuilding a hurth hbw20

[rockborn]

can someone estimate what it should cost to have a hbw20 transmission rebuild? thanks

[Sailmonkey]

damm near the cost of a new one!!

Honestly if you tear it apart yourself, it's a worthwhile endeavour, but if it needs anything other than clutch discs and a gasket kit you're into it for near the cost of a new one.

[barnakiel]

What is wrong with hurths? A friend has just rebuilt one and put it on sale.

Do they break due to overload or something?

Asking because I can see many questions on how to fix up an ailing Hurth etc.

b.

[Sailmonkey]

We went through four (well, 2 new and 2 that I rebuilt) before switching to a twin disc..........and nowhere near overloaded.

[rockborn]

i found a rebuilt on the shelf near boston for $1400.00 and a new twin disc in north carolina for $2400.00. the small difference in ratioo, 2.73: 1 original vs 2.88 twin disc has me opting for the rebuilt w a 90 day warranty

[phorvati]

Ouch, I ordered tapered bearing set for my hurth HBW10 for around 200$. The entire set with shims and gaskets.

I had my transmission completely seize due to no fluid! My mistake. I was motor-sailing at full rpms. Was lucky crankshaft didn't break. Anyhow, only one bearing was seized. i was able to chisel and grind off the tapered pieces of shattered bearing, file-down the shaft and press a new bearing in. Torching it and following the manual.
Very doable job. i am not sure about the clutch or disk etc...but i'll cross that bridge when i get there.

[perchance]

Originally Posted by phorvati

Ouch, I ordered tapered bearing set for my hurth HBW10 for around 200$. The entire set with shims and gaskets.

I had my transmission completely seize due to no fluid! My mistake. I was motor-sailing at full rpms. Was lucky crankshaft didn't break. Anyhow, only one bearing was seized. i was able to chisel and grind off the tapered pieces of shattered bearing, file-down the shaft and press a new bearing in. Torching it and following the manual.
Very doable job. i am not sure about the clutch or disk etc...but i'll cross that bridge when i get there.

Be sure to check the recess where the bearing cup sits. If the new cup spins in the housing your bearing will fail in short order. If the failed bearing shed any amount of metal it is important to wash out all the bearings and blow clean with compressed air along with the case. Sorry to sound pedantic but when you do this sort of thing for a living you want to help wherever possible.