Is my nut too tight?

TRAILN

Petty Officer 2nd Class
Joined
Jul 28, 2011
Messages
121
I've got metal to metal wear marks on only one side of my prop and one side of the housing. Wondering if my main nut is too tight or the shaft is bent. It spins freely when in N. No vibrations at any speeds.

I torque to 55 lbs and then tighten a little more so the lock tabs match the flat side of the main nut.

This is a 2013 Merc 115 4S
 

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alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,548
Some props have different thrust washers needed to be used due to variations. When the washer is laid on the prop, is there any slop side to side?

What is the part number of the prop?
 

TRAILN

Petty Officer 2nd Class
Joined
Jul 28, 2011
Messages
121
I can check it tonight.

This is the original prop that came from the factory.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Jul 23, 2011
Messages
50,234
I've been told my nut is too tight....However in your case, either your give is not centered, or you have a bearing issue
 
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