Vovo Penta MD2040 S-Drive Problem

[landonshaw]

I have a Volvo Penta MD2040D and changed the anode yesterday while in the water. When I put the prop back on the shaft, and then the screw on cone, There is a gap between the prop and cone of about 1 inch. It is as though the shaft is too long??? I have not taken out the shaft, is it a one piece shaft and gear? Or a shaft, and a pressed on gear. The bearing housing is securely connected to the S-drive. I was thinking that the only way the shaft could begin to extend is if the shaft is a multiply part, shaft and gear, and it is actually pulling away from the gear. There is no noticeable wobble on the shaft. It seems secure.
Any ideas?

[Jeannius]

You don't mention part 25, the spacer. Is that present and correct?

I believe the gear is heat fitted to the shaft so could theoretically move... but I doubt it.

I'm no expert, but I have fitted new saildrive oil seals to my MD2040 and S120 setup plus many anodes, so have been in that area of the boat a few times!

I see you are in Grenada... I had work done on my saildrives at Grenada Marine. They seem to know what they are doing. We'll be back there - weather permitting - in the next week or so.

[landonshaw]

Yes, part # 25, that is a sad story. I have not had that part so in my resent vacation to the States purchased it and a number of other spare parts. Intention to bring them down to the island. Well, they are sitting on a chair in Maine. Left in the confusion of a 4 AM departure to the airport. As I remember, # 25 looked like a light metal spacer of some sort. Does it take up the space between the s drive and prop.
We are in Grenada and I have pulled out at Grenada marine. Limited parts though but they can order and have brought in. Look forward to talking to you over the net channel #68. We are Aloisius in Secret Harbor (Mt Hartman)

[witzgall]

On our 120s saildrive, we put several thin plastic spacers in there to make up the room. They are about 2.5 inches in outside diameter, approx shaft diameter or a bit bigger on the inside. Each is perhaps 1.5mm thick.

Chris

[Jeannius]

Yes it does go between the saildrive and the prop and is maybe about an inch in length. See you soon!