Engine/Transmission (1998.5 - 2002) For fun we press apart a 4wd front bearing hub

[Texas Diesel]

This bearing failed ($375) because the inboard bearing inner race spun on the shaft. There should be a positive (key, loctite etc) way to keep the inner race from rotating. There was plenty of grease as well. You can see where both bearings inner races were rotating. They are nylon caged as well. another example af the American Way... Lowest bidder syndrome :{



Next step is to see if I can source the bearings themselves. Only hitch is the outboard bearing has a lip to set space between the two roller bearings. Timken should be ashamed to have their bearings used in such a sloppy manner.



The bearing number is JRM58000-SA, if anyone wants to hunt the bearings as well.

 

[Texas Diesel]

Outer race

 

[Texas Diesel]

Bearing spacer

 

[Texas Diesel]

The arrow points to the wear from the inner race spinning on the shaft.

 

[Texas Diesel]

Nylon roller cage

 

[Texas Diesel]

Complete assembly, pressed apart.

 

[PWelsh]

Thanks for going to all the trouble of taking the pictures and showing us that.

 

[Texas Diesel]

No problem, glad you liked the pictures.



TDR members seem to enjoy "how it works" kind of information.

 

[Forrest Nearing]

seems like a pretty cruddy design...



are all 2nd gen 4x4's like that? anyone make a quality aftermarket replacement?

 

[Nate]

How does the brake rotor come off that?

 

[DFerverda]

The rotor comes off when you pound the 8 lug bolts out of the holes. Spray em with bp blaster and put a lug nut on and SMack the nut with a bfh and it backs right out.

 

[jkalchik]

I'm not sure where you're getting hubs for $375, but my local Autozone has Timken assemblies for $201.

 

[Cooker]

I have talked with a couple people who have replaced just the bearings. If you do a search on here you might find the part number. Otherwise I can dig it up for you.



If I remember right one of the races was not replacealbe?

 

[Texas Diesel]

Do you have an Autozone part number?

 

[Texas Diesel]

The outer races are part of the "drum".



I would like the part numbers if you have them.



TIA

 

[Cooker]

Shot an email to a friend that replaced the bearings only on a couple hubs that still had good races. He said they did not hold up well and ended up replacing the entire hub assembly in less than 10k miles. I'll get the Timken PN if you are still interested.

 

[Texas Diesel]

Interesting.



I would appreciate the Timken p/n if you can get it. Thanks

 

[Cooker]

Timken 387a

 

[Texas Diesel]

Thanks .

 

[jkalchik]

Do you have an Autozone part number?

Autozone HA590020 for my 99 CTD 2500 4x4, no ABS, 8800 lb. GVW.