97’ 330DA transmission

Climate East

New Member
May 14, 2018
23
Greenville NC
Boat Info
1997 330 DA
1999 280 BR
Engines
7.4L V-drives
Hello all, I had a catastrophic failure on a dripless seal Memorial Day weekend and I need to find out what type of Hurth I have mated to my 7.4L MCM’s. After pickling the engines and such I was finally able to put it overboard this past weekend and both oil seals are pouring fluid at the v-drives. I will try to make this short so all will know what happened that weekend.

Cruising along around 3000rpm’s and heard a clunk on the starboard motor from the ER and the motor died out but remained running. Put some gas to it and back on plane then it completely died out. Open the hatch and the port motor was turning up water. Shut that one down because I knew it wasn’t good. Flagged a jet ski down and had him tow me to shore where I walked the anchor out and winch it as far on the hard as the windlass would. At that point the water was above the dipsticks and the boat was lisping to the port side where it made its home for about 12 hours. So port motor prop was bent from rocking up and down and of course the starboard took a beating including sheared bolts on the shaft flange and the carbon stator broke in pieces Had the dripless replaced on the starboard and that prop sent to the laser shop and got a new port prop. Replaced both cutlass bearings, motors running, filled transmissions up and started seeing trans fluid under both seals where the shaft goes thru the transmission before I could even take it for a ride. All labels are gone on the transmissions but I know they are Hurth. Anyone know what the mode number would be?
Many thanks Chris
 
I know it’s a Hurth. I even have the serial numbers from my literature. I am concluding that they are 630’s and 1.5 ratio but I’m not absolutely positive.
 
Have you tried contacting ZF directly? Here is the link I used on my recent Transmission issue.

They were super helpful

https://www.zf.com/corporate/en_de/meta/contact/technical_inquiries_zf/technical-inquiries.jsp
No I haven’t, I’m actually waiting for the boatyard to give me their input and assessment. I will give them another week before I put the boat back on my trailer and carry it to the house where I can work on it. Thanks for your help and info.
 
Yes, both transmissions were leaking at the seals. They have been replaced and the starboard motor reinstalled Thursday and port going in on Monday. So looks like a sea trial this week. Fingers crossed. They are Hurth 630 v drives.
 

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