B80 4 speed Are bearings pressed?

[patarch 2]

Hi,

As I am looking at what needs to be done to my recent acquisition (1974 B80 4 speed), I noticed a lot of transmission fluid and dirt caked on the right side rear wheel, hub and transmission casing. There is vertical and  left to right play in the shaft which requires new bearings. From the exhaustive readings  on this forum, opening the transmission to change the bearings on the axles is needed. I am up for the task but before I start, can someone confirm whether I will need a press and a puller to change these bearings? Last thing I wish to do is to drive around looking for someone who has a press.

Thanks in advance.

Patrick

Edited December 7, 2016 by patarch
lack of detail

[daveoman1966 3,586]

You shouldn't need a press.  To remove the old bearing, find a socket that is just a whisker smaller OD than the bearing rim.  Use the socket and gently tap with a mallet to drive the bearing out.  Use the same socket to install the new bearing, being even more gentle.  Use a mallet instead of a steel hammer.     

[Ed Kennell 35,603]

You may need a puller to remove the hubs.   Do not drive them off with a hammer as you could damage the snap ring and axle groove inside the tranny.

The hubs and keys can be a challenge to remove.  There are many posts here  describing methods of removing these parts.

 

Oh, and  to the

Edited December 7, 2016 by Ed Kennell

[patarch 2]

Thanks for the swift replies and the welcome. Hubs are removed and have been soaking. One was was loose (in and out play) and the other one only needed a PB blaster and a couple hits with a rubber mallet. I will take this transmission apart within the next week and upload pictures for the curious folks. Luckily this B80 is covered in grease and dirt so there no rust has been found so far.

 

[SylvanLakeWH 24,087]

[Walt 339]

 

[doc724 924]

If you have up and down movement it means the outer needle bearing is trashed.  Depending on how trashed it is (if the needles are gone),the inner main bearing may be damaged as well.  Make sure you get all the broken needles out of the trans and if you find that you need a main bearing, they are now available from Wheelhorseman1000, a RS vendor.

[patarch 2]

Hello and thanks for the info doc274,

I have been organizing a space to take the transmission apart. I confirmed (measure twice, buy parts once) that I have a 1" OD output shaft. Before I order parts, I want to take the old ones out measure (ID,OD) and make sure I order the correct parts.

 

 

[doc724 924]

Somewhere here on RS is a step by step on how to tear a transmission apart.  I cannot remember who wrote it and I thought is was pinned, but I just gave a quick check and could not find it.  I know someone will jump in and point you to it (or you could do a search),  I tore apart two transxles at the same time to make one good one (my main bearing was trashed on the side with the failed needle bearing).  The instructions are invaluable as there is a right and a wrong way to do it.  There is also a WH service manual that I found in the manuals sections that tells it as well.

[patarch 2]

Thanks doc 724 for the insight, I found this thread from a few years ago, It is very informative already

 

 

 

[gwest_ca-(File Mod) 10,478]

Garry

[patarch 2]

Thanks. The weekend's supposed to be unusually cold, this will be a good read!

Patrick