mercruiser

cableguy

Recruit
Joined
May 28, 2002
Messages
3
I was woundering if anyone has ever resealed a upper and lower unit on a mercruiser? if so can you tell me what kind of a job it is to do so. I am also going to pull drive off and replace drive shaft, exuast, and shift bellos, and maybe the gimble if it feels bad. Im i nuts for trying this ? i have never worked on a mercruiser before, but have good mechanical skills, If anyone knows any tricks before i start i would appreciate it.... thanks ,by the way its a 1977 mercruiser #1
 

Homerr

Commander
Joined
Mar 4, 2002
Messages
2,294
Re: mercruiser

I was well on my way to do the same thing on my 76. I took the drive to my local pro, and found the drive was shot. He couldn't even get the lower apart because of the salt water.<br /><br />Unfortunately, there are 'special' Mercruiser tools you will need if you will be replacing parts inside your drive. Unless you want to spend the $2000 bucks buying 'em (or whatever they cost), forget it. Have the pros do it.<br /><br />As far as the gimbal, you might be able to get away with doing the bellows, but inside the drive? Scared me off... Too many expensive tools you'll need, and all the shimming etc...<br /><br />If your bellhousing has the 12 point screws, you'll need a special tool for that (Get them on E-Bay) You'll also need an extra long 9/16 deep socket for the shift cable. (Also on E-Bay) <br />Assuming of course you'll be replacing it, which you should if it never has been serviced. There is also a 'bellows expanding tool', but from what I've been told on this forum, you really don't need it. Soaking the bellows in hot water seems to be the choice of the back-yarder.<br />You also ned to glue the bellows in as well.<br /><br />I actually made my own shift cable socket. I took a regular deep socket and cut it in half. I turned it down on a lathe and put in a 3" metal sleeve and welded it up. Works great!<br />So now I have a unique Craftsman-Mercrusier shift cable socket!<br /><br />After I learned my drive was shot, I gave up the fight. Probably going to buy a whole new drive and transom assembly.<br /><br />I like to do all my work too, but sometimes you have to give in and consult the pros!<br /><br />H.
 

chiefmike58

Seaman
Joined
Apr 3, 2002
Messages
60
Re: mercruiser

Vinnie, if you are mechanically inclined its not that much of a big deal. I've done a few of them and the important thing is to have the manual for your drive. There are a few special tools that you definitely need, but cost is more like a few hundred than a few thousand. Same with the bellows, not that difficult at all if you go by the manual, and locate the clamps screws in the proper position. By the way, if you have it all apart, make sure you go ahead and replace that gimbel bearing. Just get a slide hammer and whack it out. You'll save thousands.
 

chiefmike58

Seaman
Joined
Apr 3, 2002
Messages
60
Re: mercruiser

Vinnie, one other thing, you can get all the parts and tools necessary for this job from Basic Power Industries located in Harkers Island,N.C.. Here is their website.www.ebasicpower.com <br />Good luck
 
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