470 rear motor mounts

[NWVintage]

Can anyone shed any light on how to replace the rear motor mounts on a 470?

Parts 2 and 3 in Flywheel housing schematic on this page:
https://www.mercruiserparts.com/Sho...1592&bnbr=140&bdesc=FLYWHEEL+HOUSING+ASSEMBLY

The old ones are destroyed. All of the rubber innards came out of the starboard mount as I as taking it apart (the mounting bolt was rusted to the metal sleeve down the middle of the mount) and the port mount is not a whole lot better. Do I have to pull the flywheel cover and press them, or ??? Any and all help would be greatly appreciated. I need to get the old ones out and then new ones in.

 

[Bt Doctur]

burn the rubber remnents out, use the correct size socket to drive the ring and sleeve out if possible. Worst case, use a small screwdriver to bend the shell inward to remove it

 

[NWVintage]

burn the rubber remnents out, use the correct size socket to drive the ring and sleeve out if possible. Worst case, use a small screwdriver to bend the shell inward to remove it

I'd already tried that but apparently, I needed to hit it harder...

Next question is those little brass spacers. The new mounts came packaged with 2 of them. Schematics and previous install only had 1. Any idea what the other is for?

 

[Bt Doctur]

Usually supplied with 1 spacer, but guessing in case you screw one up ? I made this to install them

 

[NWVintage]

Usually supplied with 1 spacer, but guessing in case you screw one up ? I made this to install them

Did you machine that yourself?! That's a fancy install tool... I used an appropriately sized socket to drive in the spacer and then the mount itself. I used one of the old mounting bolts to keep the socked and mount properly aligned (did a small amount of damage to one of the sleeves before coming up with the bolt idea).

 

[Bt Doctur]

Yes, made it on my lathe, the small lipped upper one self-centers in the top of the housing. the bottom one is a few thou under the od of the bushing
Tighten the bolt and it pulls everything together.Used a sacrificial 3/8ths bolt just in case.