Bronco Forum - Full Size Ford Bronco Forum banner
1 - 6 of 6 Posts

·
Registered
Joined
·
29 Posts
Discussion Starter · #1 ·
Hi everyone!

A few weeks ago, while changing tires, I noticed I have play at one of the wheels. I'm thinking it's a wheel bearing. I also decided to change my auto hubs to Warn manuals. So I picked up all the bearings at Auto Zone yesterday. I noticed he gave me the wrong inner bearing?

Apparently, there's 2 part numbers for the inner bearing, depending on whether you have auto or manual hubs. He gave me the manual hub part. What exactly is the difference? With my auto hubs, I have the wrong part. But would it become the correct part once I swap to the manuals? Or do I still run auto hub bearings even after the hub conversion?
 

·
Man of endless projects
Joined
·
9,793 Posts
what year what year is your truck? sounds like you have a 87-88

80-96 other than 87-early88 with manual lockouts use the A-37 (SET37 Timken) inner bearing and A-35 (SET45 Timken) outer bearing. the auto hubs use those also

the 87-early88 with factory manual locking hubs have a special setup known as having 'Tophat' lockouts. they use a A-38 (SET38 Timken) inner and outer bearing.

tophats look like this


because many people with auto hubs change to manual hubs, an easy way to identidy a truck with Tophats are there are no screws around the dial like a typical lockout has. where a normal lockout has screws around it

in short if you have autos and are converting to manuals you use the A35/A37 bearings
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #3 ·
This truck's a 1992.

Ok, so according to Auto Zone, set 37 is for auto hubs. So right now, my truck is running 37's. Set 38 is for manual hubs. And the 38's is what he gave me.

So regardless of whether I convert to manual hubs or not, he gave me the wrong ones and I need to exchange them for 37's.

Very good. Thanks for clearing that up. I'll go back there tomorrow. (y)
 

·
Man of endless projects
Joined
·
9,793 Posts
correct. A35 and A37 are correct.

i checked on their website application guide and it does some reason show it as an inner bearing for 87-94 Broncos w/ manual hubs. but it do show it correctly for 87-88 F150 for inner and outter with manual hubs. wonder how many people have made that same mistake
 

·
Registered
95 351W
Joined
·
71 Posts
Hi everyone!

A few weeks ago, while changing tires, I noticed I have play at one of the wheels. I'm thinking it's a wheel bearing. I also decided to change my auto hubs to Warn manuals. So I picked up all the bearings at Auto Zone yesterday. I noticed he gave me the wrong inner bearing?

Apparently, there's 2 part numbers for the inner bearing, depending on whether you have auto or manual hubs. He gave me the manual hub part. What exactly is the difference? With my auto hubs, I have the wrong part. But would it become the correct part once I swap to the manuals? Or do I still run auto hub bearings even after the hub conversion?
Hey - So around mid 95 they changed. So 95.5-96 had different sizes. Otherwise they're the same in manual or auto. Maybe gave you one of these. inner/outer different sizes as well

I used Napa store brands last week, worked well.
 

·
Man of endless projects
Joined
·
9,793 Posts
Hey - So around mid 95 they changed. So 95.5-96 had different sizes. Otherwise they're the same in manual or auto. Maybe gave you one of these. inner/outer different sizes as well

I used Napa store brands last week, worked well.
they did not change wheel bearings, they still used A37/A35. they did change the wheel seal to a 2-piece seal around 95 which in turn changed the spindle and hub.

 
1 - 6 of 6 Posts
Top