Front Axle Pin to Support, a Tight Fit

diyguy

Member
How tight should this fit be? The old pin slides in and out easily with a fair amount of slop, I'm guessing 0.010 to 0.020 inch. I'm guessing that's not normal and it's worn out. The new pin is TIGHT. I can get it in but it takes some love taps with a 2-pound hammer and wood block, swinging the hammer about a foot.

To be clear, I'm not talking about the bushing. The new pin fits in the bushing easily with what seems to be about 0.010 to 0.020 inch clearance.

This is on a '44 2N with the stamped steel support (8N style) using the 4-inch pin with cam shaped flange.

-Steve
 
Sounds about right, cleaned up the bore
with a flap wheel or emery cloth I would
assume, and some never seize on the pin
if it slides in with some tapping I
would be happy. No reason to be loose in
the mount just a place to wiggle and
wear then
 
I keep this bushing/bearing lubed with spray graphite.
graphite does not collect dust dirt

do not know if the original owners manual ever mentioned, what or even if, this bushing is to be lubed.
just me, if it moves, I believe it need some type lube.

I do not plan on doing this job again, if I can keep from it.
 
Your pin clearance sounds about right to me.
I too use anti seize compound there.
Gobs of it.
There was a post on Tractor Talk the other
day asking what is it about some things that
you get it all over you. Anti seize was one
of those that you use a little of it and the
next thing you know it's on your pants,
shoes, elbow, ear lobe and if you have to go
take a whizz, somewhere else. It's some odd
stuff.
 
grease and oil attract dirt and will wear out the bearing faster, as I have been told.

they were designed to have no lube or graphite

however, I had a friend who was a machinist by trade, he turned down a perfect bearing and bolt for his front axle.
also added a grease zerk and grease groves in the bearing
his bearing should last another 100 years.

I do not understand why, if you kept it greased, it would not keep the dirt out of the bearing.
most old disc like mine had grease fittings and the axle bearings were right down in the dirt and dust.
 
Wellmax,

You wrote:
"Grease and oil attract dirt and will wear out the bearing faster, as I have been told.
they were designed to have no lube or graphite"

I also think your machinist friend was right.
It seems like old wives tales are created to make allowances for design shortcomings.

It's logical to me that dust trying to enter would have a hard time competing for space in there if the space was occupied by grease, and as you said the addition of new grease forces dust at the periphery out.

The dust is going to be there regardless . . . it's not like "grease attracts dust" in the sense that the grease attracts even more dust than. Sure dust may stick to grease at the ports of entry a little more than it would naturally build up, but access for the dust is totally limited by the grease.

No grease and a nice flow of new dust grit being ground down and replenished by new abrasive dust, logically accelerates the wear.

Thanks,
Terry
 
Tall,
I do not think Henry Ford and Harry Ferguson ever expected these old tractors to still be running all these years later,
If so, I believe they would have had their engineers place grease zerks on this wear point,
I once owned a D14 AC, wide front, 1957 model same as my TO35 Ferguson
The AC had a grease zerk on the axle pivot point, I never had to replace that bearing, I have had to replace the bearing on my Ferguson

I just keep it lubed with spray graphite from time to time, hope it last as long as I do,
 

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