Do your hubs walk?

[oilwell1415 563]

I was looking at my tractor today and noticed the axles sticking out of the hubs about 1/4".  When I installed them I put the hubs even with the ends of the axles, then tightened the set screws until I was scared plus a little bit, so the hubs have walked in a little bit.  Is that something I just have to live with?  The hubs were snug on the axles with no slop.  I've run the tractor maybe an hour total since I installed them.

[pfrederi 17,866]

Newer hubs have 2 set screws  90 degrees apart to help with this problem.  You can drill and tap for second ones yourself.  Make sure you use new cup point set screws

[ebinmaine 68,343]

I run Cinnamon Horse pretty heavy sometimes and I've never had that issue.

 

A few little tricks I can offer.

 

The first is to make sure you have to set screws in the hub and you could even go to the trouble of creating a flat spot in the axle for the second set screw to grab better.

 

Make sure you use NEW set screws.

 

Another neat little thing is to tighten your set screw. Loosen it. Tighten it. Loosen it.

I do this at least four or five times on a new installation.

if you're using a wrench, not a ratchet. You can see the clock position change from one tightening to the next proving you're going a little further into it.

 

 

[Pollack Pete 2,273]

Just pretend you need to remove them to change axle seals.They'll NEVER move again.I've got one stuck hub on a D series rear end that I've been trying to remove for a couple yrs now.Won't budge.

[roadapples 6,983]

Set screws should be torqued 28-32 ft lbs. Hard to get that with a 3" wrench.

[gwest_ca-(File Mod) 11,096]

8-point socket works good.

I tighten, drive a bit, retorque and drive a bit and repeat until I feel they are good.

When you tighten the jamb nut just snug is good. Any more than that tends to pull the screw back out so you can start over.

 

Garry

[lynnmor 7,354]

If the hub or axle is worn making for a sloppy fit, the screws will work loose much faster.

[JoeM 7,874]

4 hours ago, roadapples said:

Set screws should be torqued 28-32 ft lbs

I use a torque wrench and you will be surprised how tight that really is..........also, oil the thread on the screw when torquing. Most fasteners are to be torqued wet and not dry. 

[Adams94 1,068]

My c195 will do that on the rh side and it has two set screws bout twice a year when I change tires I will adjust it out

[pacer 3,174]

Something that hasnt been mentioned yet is --- Dont DELAY in correcting this, once they start slipping they will rapidly get worse and worse. It was mentioned to add another set screw and that is an absolute necessity -- in fact while I have the hub off anyway I add 2 extras for a total o 3 on each side. Eric mentioned adding a flat spot where the new screw will make contact, do this! Run the screw in tight enough for it to make a dimple in the axle, remove it and use the mark to grind a flat spot there - I use my small angle grinder.

[pfrederi 17,866]

If you add a set screw you need to flatten out the area around it on the hub. Note how the original set screw hole has a machined flat spot around it.  The hub body has a taper to it. if you torque down the jam nut it will put lateral stress on the setscrew and may snap it off flush the hub body.  Do not ask me how a I know this.

[ebinmaine 68,343]

13 hours ago, Adams94 said:

My c195 will do that on the rh side and it has two set screws bout twice a year when I change tires I will adjust it out

Have you tried replacing those set screws or the key that one of them goes into? I'm wondering if maybe the cup is worn out?

[Adams94 1,068]

7 hours ago, ebinmaine said:

Have you tried replacing those set screws or the key that one of them goes into? I'm wondering if maybe the cup is worn out?

No honestly I have not I usually just keep an eye on but not a bad idea

[C-85 698]

I had this problem and had added an extra set screw like some folks have.  I think the hubs still moved inward, so I added some big washers to keep them from doing this and that seems to work!  

 

C-85

[johnnymag3 2,521]

On 4/27/2020 at 5:41 PM, TractorJunkie said:

I use a torque wrench and you will be surprised how tight that really is..........also, oil the thread on the screw when torquing. Most fasteners are to be torqued wet and not dry. 

Dry torque is far less than wet torque....GOOD POINT !!!

 

[johnnymag3 2,521]

THINK OF ASSEMBLING AN ENGINE.....RODS...MAIN CAPS...ETC...

[johnnymag3 2,521]

Just now, johnnymag3 said:

THINK OF ASSEMBLING AN ENGINE.....RODS...MAIN CAPS...ETC...

WET...…..WITH OIL