Frozen flywheel nut on 1983 mariner 50hp motor

A

ARTHURRUF

Recruit
Joined
Sep 18, 2011
Messages
3
I have used 8o foot pounds to loosen this nut to no avail. Any suggestions? Will heating the nut cause problems? Thanks, Art
 
RandyJ

RandyJ

Master Chief Petty Officer
Joined
Jun 13, 2002
Messages
808
Re: Frozen flywheel nut on 1983 mariner 50hp motor

I would avoid using heat on any outboard powerhead. I'm sure others have suggestions but if it rust or corrosion PB Blaster sprayed on is a good nut loosener. Other than that I'd go with a pneumatic (air powered) impact wrench that will kick around 120 ft. lbs. or more. I don't have a clue what torque spec's are for flywheel nuts but I've had as much difficulty getting them off as I have getting lug nuts off of vehicles.
 
J

jim765

Seaman
Joined
Aug 14, 2011
Messages
50
Re: Frozen flywheel nut on 1983 mariner 50hp motor

ARTHURRUF said:
I have used 8o foot pounds to loosen this nut to no avail. Any suggestions? Will heating the nut cause problems? Thanks, Art
Click to expand...
try useing an impact gun.if yoou have one to use.
 
J

jim765

Seaman
Joined
Aug 14, 2011
Messages
50
Re: Frozen flywheel nut on 1983 mariner 50hp motor

also use some pt blater on it befor trying ,works for me.
RandyJ said:
I would avoid using heat on any outboard powerhead. I'm sure others have suggestions but if it rust or corrosion PB Blaster sprayed on is a good nut loosener. Other than that I'd go with a pneumatic (air powered) impact wrench that will kick around 120 ft. lbs. or more. I don't have a clue what torque spec's are for flywheel nuts but I've had as much difficulty getting them off as I have getting lug nuts off of vehicles.
Click to expand...
 
S

Sunfish12

Petty Officer 1st Class
Joined
Feb 6, 2011
Messages
260
Re: Frozen flywheel nut on 1983 mariner 50hp motor

Tow it to a an auto repair shop. I'm sure they'll air gun it off for you at no charge.
 
A

ARTHURRUF

Recruit
Joined
Sep 18, 2011
Messages
3
Re: Frozen flywheel nut on 1983 mariner 50hp motor

I solved my problem by using liquid wrench and letting it sit over night and then used 100 pounds of tourq. I did use heat on it the day before and melted the lock portion of the nut. Will get a new one. Thanks. Art
 
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