[Murff]

Well, something new has popped up on this '68. I'm sure there's a simple answer but since I usually over-engineer everything I can't see the simple.

When I set the hub on to the spindle, the inner seal is rubbing on the facing edge of the spindle causing the hub to take an enormous amount of effort to turn.

I'm sure the inner bearing is supposed to come against the bearing stop before the seal hits that face but it does not seem to be the case.

Inner bearings are a Set 6 (LM 67010 race, LM67048 roller) and the seal is a 6715 and they are all new.

I have checked Mustang hubs thinking that these may have been swapped out but those call for the same bearing set. The six cylinder cars used a smaller set but there is no way those will correct this.

Has anybody run into this issue? What am I doing wrong? Could I have pushed my inner races in too deeply? Seems like I need about an 1/8" to 3/16" wider bearing.

Thanks for your help.

Murff

 

[Ronbuell]

Parts store gave you the wrong parts. Ive had that happen before. The part you need is probably one above or below what he gave you. He read it from the wrong line on the screen. My experience. Good luck.

 

[FEandGoingBroke]

You Cannot drive the race in too deeply.

They make diffrent seals that serve the same purpose, seals that fit deeper and sre offset a bit to prevent rubbing the spindle...

And is could be the wrong bearings, check the old race #'s and Bearing #'s then see if theyre Granada application or something other than the Falcon...

FE

 

[Murff]

Not bad thoughts and having been a Ford parts guy for many years was actually my first thought. Unfortunately, not the problem in this case. I looked up my own parts and have also verified the number stamped into the race and roller. Timken bearings, so poor manufacturing is probably not the issue either. Parts spec out, including the seals. I even checked against my Ford 1960 - 1967 Quick Refernece manual and by application there just aren't any other options. Perplexing.

What I have found since I first posted this is that if the race is seated all the way down to the stop in the hub, the seal bottoms onto the spindle. If I leave about 1/4' gap between the stop and the bottom of the cup everything will line up perfectly. Problem with that appears obvious, and this is a race car so this is not the fix.

I do see some wear on the spindle where the inner bearing rides against the stop. I'm beginning to suspect that my spindles are dead but I don't have any dimensions to use to verify. Hard to believe though that more than 3/16" of material is gone from that surface. The kind of heat that would have given off would have turned the bumper blue!

I'm open to all possibilities, including wadded up old parts guys.

Murff

 

[FEandGoingBroke]

Murff,
What I am seeing is a problem with the depth of the dust seal... Find one with a dip to it... Shouldn't be extreemly difficult... OR.......

You can shim the inner race. Make a shimm for the inner race that's large enough for the axle...


FE

 

[Murff]

A shim for the race is probably going to be the fix. The inner roller needs to contact the stop on the spindle before the flange on the seal contacts the face of the spindle so a seal with a drop isn't going to do the trick.

Good idea on the shim tho'. My thoughts have been leaning that direction. I could possibly machine down the outer edge of a new inner race and then seat it upside down.

Sure seems like a pain in the arse.

Keep those cards & letters comin' folks.

Murff

 

[Murff]

Update:

After taking everything apart I have found that the seal is actually rubbing on the rasied center portion of the backing plate, not the spindle face as I first thought. With the backing plate off of the car there is plenty of clearance for the bearing and seal.

Unless anyone can think of a good reason not to, my plan is to grind down this raised area, hopefully without altering the size of the opening so that the plate can still index onto the spindle. The four bolts that mount the plate to the spindle will also help to index the plate.

Thoughts? Cautions?

Murff

 

[Murff]

Update to the update:

Problem solved. Trimming down the rise in the backing plate did the trick.

Still don't know why this became an issue. I will be monitoring these areas closely once the car gets out and makes some passes.

Thanks for your responses.

Murff

 

[coosbaylumber]

My BCA book calls for the seal to be a 6815, not the 6715 as noted.

Wm.