need help with a part search

N

noserider

Seaman Apprentice
Joined
Jun 23, 2008
Messages
31
Guys

I have a 92 4.3lx gen 2 mercruiser. I need the lock nut that the rear motor mount bolt screws in to. The bolt goes thru the rear motor mount bushing and the spring and fiber washer and then threads into the lock nut, The parts diagrams i see online show the bushing and a spacer but not the lock nut, fiber washer or spring washer??? Anyone??
 
Bondo

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,090
Re: need help with a part search

Ayuh,... It's a 1/2" fine thread ny-lock nut....
 
Bt Doctur

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,345
Re: need help with a part search

That is a captive nut, why is it being replaced?
 
achris

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: need help with a part search

Bt Doctur said:
That is a captive nut, why is it being replaced?
Click to expand...

They are also made of aluminium and I replace them every time I pull an engine. They get chewed up real easy....
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: need help with a part search

zbnutcase said:
Cuz they fall out and get lost when engine is out...
Click to expand...

Pick them up out of the bilge, clean 'em up, and put them back where they belong. A dab of glue or sillycone will hold them in place till the motor mount bolts are reinstalled.
Do not use SS nuts. The reason they are aluminum is because the SS bolts could gall (sp) the threads and you wouldn't be able to get them on or off again.
 
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