9n generator tensioner

[davidbrodhead]

I got all my parts for a spring loaded gen. tensioner.Now I don't want to create a bigger problem during install.Problem is with the head nuts.I need to remove 2 head nuts to mount the bracket for the tensioner.The nut furthest from the generator appears to be frozen. I don't want to put too much muscle on it for fear of breaking the stud.I am a little nervous about heat since there is a gas tank sitting above it.There are lots of layers of engine paint over the nut so liquid penetrants don't seem like a good option. Maybe a nut splitter if access will allow its use ? Does the stud and nut thread same direction.

 

[HFJ]

yes, they thread in the same direction. no reverse threads involved.

 

[Den N Ms]

David, a small wire brush or even some paint remover on the nuts you need to remove to get the paint off,then spray with some PB Blaster or ect. Let it soak awhile then remove the nuts.

 

[Ken N Tx]

(quoted from post at 13:06:17 01/30/17) I got all my parts for a spring loaded gen. tensioner.Now I don't want to create a bigger problem during install.Problem is with the head nuts.I need to remove 2 head nuts to mount the bracket for the tensioner.The nut furthest from the generator appears to be frozen. I don't want to put too much muscle on it for fear of breaking the stud.I am a little nervous about heat since there is a gas tank sitting above it.There are lots of layers of engine paint over the nut so liquid penetrants don't seem like a good option. Maybe a nut splitter if access will allow its use ? Does the stud and nut thread same direction.

On the 9N, I have had the stud come out with a frozen nut on top. I do not believe the water jacket is involved with that location.

 

[Tim PloughNman Daley]

Yes, try some PB BLASTER soaking for a few days -spray often during the daytime. Try using a breaker bar on your wrench. Use a good 6-point socket and apply semi-tough pulls. If still stuck. Try some heat but watch out for fuel line and leaking gas. If that fails, use your nut splitter and spring for a new washer and nut. Torque to specs. I'd like to see the setup now with your new parts -can you post pix???


[i:654c4848f0][b:654c4848f0]<font size="4">Tim *PloughNman* Daley(MI)</font>[/b:654c4848f0][/i:654c4848f0]<table width="100" border="1" cellpadding="0" cellspacing="0" bordercolor="#000000"><tr><td height="25" colspan="2" bgcolor="#CC0000">

<font color="#FFFFFF" size="3">*9N653I* & *8NI55I3*</font>​

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[Ken(Ark)]

(quoted from post at 07:07:37 02/01/17)

On the 9N, I have had the stud come out with a frozen nut on top. I do not believe the water jacket is involved with that location.

I have 5 or 6 blocks ( 39 - 48 ) in the shop and all of the bolt holes go through to the water jackets on them . The bolt holes around the exhaust ports tend to solidify over time and appear to have a cast iron bottom . It may be possible that some blocks were cast that way or a machining process when bolts replaced stud may have occured or ??? but I believe they all went through originally .

 

[HFJ]

(quoted from post at 08:07:37 02/01/17)

On the 9N, I have had the stud come out with a frozen nut on top. I do not believe the water jacket is involved with that location.

when i rebuilt my 47, several of them did that.

 

[TheOldHokie]

(quoted from post at 11:51:38 02/01/17)

(quoted from post at 08:07:37 02/01/17)

On the 9N, I have had the stud come out with a frozen nut on top. I do not believe the water jacket is involved with that location.

when i rebuilt my 47, several of them did that.

There are basically 3 possible outcomes when you start cranking on that nut and that is one of the two good ones ;-)

TOH

PS&gt; Keep a 7/16 bolt handy for use as a temporary plug if it's just a temporary removal for something like the tensioner bracket....

 

[souNdguy]

wire brush the paint off... THEN hit it with penetrant. use a tack hammer and tap on the nut flats..

 

[HFJ]

(quoted from post at 11:59:16 02/01/17)

(quoted from post at 11:51:38 02/01/17)

(quoted from post at 08:07:37 02/01/17)

On the 9N, I have had the stud come out with a frozen nut on top. I do not believe the water jacket is involved with that location.

when i rebuilt my 47, several of them did that.

There are basically 3 possible outcomes when you start cranking on that nut and that is one of the two good ones ;-)

TOH

:lol: i'm no guru, but i have a hunch i can figure out what the third one is