TCCoA Forums banner

1 - 6 of 6 Posts

·
Super Moderator
Joined
·
11,007 Posts
Discussion Starter #1 (Edited)
I just rebuilt a set of rear knuckles, and I noticed that one of them has a loose inner race.





[/img]

So:
Did I install the bearing backwards?
Is one side supposed to hit the hub center and push against it, holding it under pressure?
Is my hub worn, being too small?\

Will the axle push against it, holding it under tension, or does the axle hit the hub first?

Anyone run into this before?



EDIT: I put the pix back; they changed the img format at some point, lol.

This is supposed to be very slightly loose here, so that the axle holds the inner bearing races together tightly.
This should not be able to move, it's supposed to have 250 ft lbs of torque on it, pinching it against the other inner race.. :)


Those are from here:
http://forums.tccoa.com/vbpicgallery.php?do=view&g=521
 

·
50 years of Mercury Cougar 1967/2017
Joined
·
1,270 Posts
I had a new set of bearings pressed in.

I tried to beat them in, the bearings did not fare well.
 

·
Registered
Joined
·
3,779 Posts
Loose, as in the hub is loose in the bearing? Or the inner race is loose on the bearing (but tight to the hub)? The axle has a grease seal that mates up to the back of the bearing, and the nut holds the hub from the outside. I don't think the hub comes past the bearing on the back side.
 

·
̇
Joined
·
3,701 Posts
Grog6 said:
I just rebuilt a set of rear knuckles, and I noticed that one of them has a loose inner race.

So:
Did I install the bearing backwards?
Is one side supposed to hit the hub center and push against it, holding it under pressure?
Is my hub worn, being too small?\

Will the axle push against it, holding it under tension, or does the axle hit the hub first?

Anyone run into this before?

Those are from here:
http://forums.tccoa.com/vbpicgallery.php?do=view&g=521
When pressing the wheel bearings into the rear knuckles..

It is advisable to use the special Ford Rotunda tools, or just have the dealership press the bearings in for you..

Ford Wheel Hub and Bearings Special Service Tools

D88L-1037-A (3-Jaw Puller)
D80L-630-5 (Step Plate for Hub Removal)
T83P-1104-AH2 (Hub Installer/Bearing Remover)
T86P-1104-A3 (Bearing Installer)
T89P-1104-A (Hub Support)
T89P-1225-AH (Rear Hub Remover)
T81P-1104-C (Push-Puller Set)

That aside..

If the center race of the wheel bearing was inadvertently pushed on as you were pushing the bearing into the knuckle you probably damaged the bearing..

When pressing a wheel bearing in you always use the outer race to push on..

It's not possible to install the bearing backwards, or upside down..Since the inside of the bearing is the same top or bottom..

There should be no play in the center race of the bearing..

If your hub is practically falling out of the center bearing race, and looks similar to this..
It'd probably be a good idea to buy new wheel hubs.. :D
Thunderbird Bad Wheel Hub Comparison.jpg

Any ridge on the shaft of the hub is bad, and is usually a tell tale sign someone drove with bad wheel bearings for a long time..

Extremely worn rear suspension components can cause bad wheel bearings, and damage the hubs as well..





Rayo..
 

·
Super Moderator
Joined
·
11,007 Posts
Discussion Starter #5
I have a Press; these went together easy.

The other side doesn't do this; It's tight.

I'm pretty sure it's the bearing.

There was no visible wear on the hub; it's definitely not stepped like that one. :)

I rubbed it down with valvoline motor honey; it's the best lube I've found for pressing stuff, it doesn't bind like other oils will.

If it was stepped, I'd have noticed.

I'll pull it all apart and see what it measures.
 

·
Super Moderator
Joined
·
11,007 Posts
Discussion Starter #6
OK; I installed all these parts last week.

The bearing is held by the pressure on the hub bolt against the axle hub; the seat for the axle is the bearing face.

Properly torqued, there shouldn't be any movement.

To install these, you have to rotate it as you tighten it, to seat the bearings against the hub, and apply the proper preload to them.

You want to check the bearings before you install them; one had grease, one did not. Same part ordered at the same time.

The hub will not wiggle at all after the hub bolt was properly torqued; you are basically kissing the two inner bearing races up against each other, the hub, and the axle, 250 ft-lb worth.

This is basically one part you can't overtorque unless you strip the hub bolt. :)

Rayo, The one in your pic likely loosened up or was not properly torqued.
Or it ate all that **** out after the bearings wore out. :)

If this hub fails, I will triple post a result, with pix, lol.

:D
 
1 - 6 of 6 Posts
Top