1985 50HP merc 4 cyl

[dew2]

I have leaking lower on this motor ser# 7192202.In the parts schematic it shows a nut in the gear housing to remove the bearing carrier assmbly.Before I try to remove that nut,Can anyone suggest how to remove it without any special tool. I never did or do Mercs this is a exception helping the neighbor,We would like to replace both propshaft seals and the O ring on the housing. Thanks

 

[bruce--69]

Re: 1985 50HP merc 4 cyl

Its able to be done with a punch and a hammer, although you may want to be prepared to replace the nut afterwards. It may get pretty well beat up by the time it gets out. If its never been out before, it may not want to come out at all. I've had to drill into the nut in several places and bust it out, being careful not to mess up the threads, then put in a new nut upon reassembly. There is a lock tab under the nut, make sure to find that and bend it forward before trying to unscrew the nut.
Good Luck, Bruce

 

[dew2]

Re: 1985 50HP merc 4 cyl

I was hoping there may be another way but its gotta be done Thanks bruce--69.Is there a torque spec for reinstalling?

 

[bruce--69]

Re: 1985 50HP merc 4 cyl

Very very tight. There is a torque, but without the special tool there is no way to measure it. If your using a hammer and punch, get it as tight as you can without busting up the new nut too bad. Make sure the threads are all nice and clean, grease up the new nut and housing threads upon installation.
Good Luck