Yanmar 2gm engine mount rubbers

[Sanfelice]

15818184535688939499492266726039.jpg (3.99 MiB) Viewed 2001 times

Hello fellow top hatters

I have an inboard yanmar 2gm 15hp and the rubber inserts in the engine mounts are gone. I'm wanting to replace them and just wondering if anyone has had any experience with doing this.

I have cracked all the nuts and am wonder if I will need to disconnect the shaft from the back to be able to lift it over the mount bolts.

[PinotNoir]

How did you go with this?

Should be able to get replacements from a company like CBC Bearings, I've done that for other equipment in industry.

Should be able to wind each mount up all the way, remove old and replace, then reseat onto the new mount.

Cheer

[Phillip]

I have a Nanni engine with genuine mounts.

During a refit last year it was strongly recommended that when I replace them next [they have a half life of only 3 years]
that I get mounts from Poly Flex Australia.

web is www.polyflex.com.au

[lockie]

Sanfelice;

There are a few brands out there. When I did mine (I have a 2GM) I looked into Polyflex, Mackay, Flexible Drive, DF Bushings and Trelleborg, and of course there are the Yanmar branded ones. I ended up with Trelleborg "Cushyfloats" mainly because they had a lower profile that would fit without requiring me to perform surgery on the engine beds. I got them for a very good price from a place in NZ. If you do some searching you will find that some of these brands provide very good tech information, including selection charts that take weight, thrust and rpm into account.

Make sure you get mounts that are designed to accommodate thrust (a couple of retailers recommended mounts that had no design thrust rating and were actually suited to rotary-only loads like generators). Also, some mounts are not are designed to restrain the load when inverted. This feature is worth having even if you don't plan on rounding the Horn. Marine-specific mounts are pretty sure to have this.

You will definitely have to disconnect the shaft coupling, to allow the engine to be moved, and then you will have to realign the coupling after you install the mounts.

Good luck with it.

Cheers, Graeme