Grease fitting size

TomC750

TomC750

Senior Member
My '41 Mercury is missing the grease fittings in both front and rear springs in the center of the spring. I cannot figure out what the thread is. It is slightly smaller than either 3/8-24 or 1/8 pipe thread. I have a good collection of grease fittings, but none are right.
 
Good to have the zerks yes, but don't use them. The original lubricant Ford used is no longer available, and anyway, it would squeeze out the sides before it could travel to the ends of the leaves where it is needed most.
Labor intensive, but if your springs are worn, best to dismantle them, deburr them where they rub against each other, load them up with fifth wheel grease, and reassemble them. Don't use grease, it will make a mess, not do what you need, and dry up being useless.
 
Alan is quite correct. I use STP oil treatment in a grease gun when servicing friend's cars. It has nearly the same consistency of the Ford lubricant but not the same ingredients.
 
My car rides quite well, and I don't expect that the springs are worn, but I would still like to lubricate if possible, but without fittings, I guess I can't.
 
ford38v8 said:
Good to have the zerks yes, but don't use them. The original lubricant Ford used is no longer available, and anyway, it would squeeze out the sides before it could travel to the ends of the leaves where it is needed most.
Labor intensive, but if your springs are worn, best to dismantle them, deburr them where they rub against each other, load them up with fifth wheel grease, and reassemble them. Don't use grease, it will make a mess, not do what you need, and dry up being useless.
Click to expand...
I know enough not to use regular grease. When I posted the question some time ago a poster stated that an acceptable substitute was available at any parts store. I should have written it down, but didn't. And I am still hung up on fittings.
 
Perhaps the fittings or even the spring bolt assemblies are available from some of the aftermarket suppliers? Sounds like something Fred at Southside Obsolete might have on one of his many shelves.
 
tubman said:
Perhaps the fittings or even the spring bolt assemblies are available from some of the aftermarket suppliers? Sounds like something Fred at Southside Obsolete might have on one of his many shelves.
Click to expand...
Thanks Tubman
 
Well, I don't know why I didn't think of it before, but I looked in the "Green Bible" hardware section. The front spring fitting is 353040-AS7, 5/16-24 thread. The rear is 353041-AS7, 3/8-24 thread. Strange that there are two different threads front and rear. At least now I know what I am looking for.
 
You must log in or register to reply here.
Back
Top