Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 04-12-2019, 04:36 PM   #1
Res731
Senior Member
 
Res731's Avatar
 
Join Date: Jun 2014
Location: Westlake, ohio
Posts: 107
Default Banjo saga continues

So I completely disassembled the carrier and i removed all the bushings and races . The only thing i couldn't do was to remove the pinion gear from the drive shaft.

At first i though the carrier bearings were tight. But once I took the axles off I could turn the inner part of the bearing by hand. It's a little stiff and still had to hammer and chisel it off because there was a slight lip on the end of the carrier. Looks like I will have to have the carrier knurled.
Attached Images
File Type: jpg 20190412_173541.jpg (31.2 KB, 53 views)
File Type: jpg 20190412_173445.jpg (37.7 KB, 49 views)
Res731 is offline   Reply With Quote
Old 04-12-2019, 05:28 PM   #2
johnneilson
Senior Member
 
Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,043
Default Re: Banjo saga continues

It also looks like the thrust surface is worn down.
You might want to see if you can compare this one to another.

Not to add injury here, but I have been informed that the axle bells can also be damaged by not having clearances correct, maybe someone will chime in with suggestion on checking.

Whoever saved the time and money on the gaskets probably damaged some (expensive) good parts.

John
__________________
As Carroll Smith wrote; All Failures are Human in Origin.
johnneilson is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 04-12-2019, 05:47 PM   #3
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 8,711
Default Re: Banjo saga continues

I agree, that thrust looks worn. Probably with the worn thrust they left the gaskets out
to try and get the preload.


Bob
Bob C is offline   Reply With Quote
Old 04-12-2019, 06:10 PM   #4
Res731
Senior Member
 
Res731's Avatar
 
Join Date: Jun 2014
Location: Westlake, ohio
Posts: 107
Default Re: Banjo saga continues

I was planning on adding a couple shims to each side under the bearing.
Res731 is offline   Reply With Quote
Old 04-12-2019, 07:59 PM   #5
Joe K
Senior Member
 
Joe K's Avatar
 
Join Date: Jul 2010
Location: Cow Hampshire
Posts: 4,173
Default Re: Banjo saga continues

Quote:
Originally Posted by Res731 View Post
I was planning on adding a couple shims to each side under the bearing.
That should work, but I would have someone measure a relatively undamaged carrier and see what the shoulder is relative to the split where they bolt together.

THEN machine the shoulder again to present a flat surface.

THEN add hardened shims to bring the dimension back to where it should be.

Could be better than new when you're done?

I have a loose carrier waiting for disassembly which I could start on and give you my shoulder reading. I have not inspected this bearing seat - yet.

Joe K
__________________
Shudda kept the horse.
Joe K is offline   Reply With Quote
Old 04-12-2019, 09:34 PM   #6
Tom Endy
Senior Member
 
Tom Endy's Avatar
 
Join Date: May 2010
Location: Southern California
Posts: 3,122
Default Re: Banjo saga continues

Sponsored Links (Register now to hide all advertisements)
The attached article may be of help. Before you have the carrier knurled best to check the inside and make sure it is a good core without steps worn into it from the back side of the spider gears.


It doesn't matter how much is machined off the stop, if you are following the procedure you can keep adding shims under the carrier bearings until you have compensated for the material removed and you achieve the correct pre-load on the bearings.


Tom Endy
Attached Files
File Type: pdf 4-5-Carrier Repair.pdf (537.5 KB, 24 views)
Tom Endy is offline   Reply With Quote
Old 04-13-2019, 06:24 AM   #7
Res731
Senior Member
 
Res731's Avatar
 
Join Date: Jun 2014
Location: Westlake, ohio
Posts: 107
Default Re: Banjo saga continues

Hi Tom

Yes I have slight wear from the spider gears and I will keep share the article when I take them to a machine shop.
Res731 is offline   Reply With Quote
Old 04-13-2019, 08:05 AM   #8
Terry, NJ
Senior Member
 
Terry, NJ's Avatar
 
Join Date: May 2010
Location: Bucks Co, Pa
Posts: 3,740
Default Re: Banjo saga continues

I did my rear last year and on the spider gears. I could find NO specs or standards about the fit on to the yoke. In another forum, I asked everyone and anyone what the sizes should be, nada! We checked Tom Endy's stuff, Nothing! So I went with them as they were. The bores in the gears was .753 and the yoke was .747, or .006 clearance. Pretty sloppy! But it's been working well. As I said, we could find nothing on it. There's all kinds specs and so forth on every other aspect of a differential, but nothing about this, it must not be a critical fit.
About the bearing fits, I'm told that the new Timken bearings are manufactured with a .0005 smaller bore. Whether or not the new numbers signal the change or not, I can't say. The new number is Timken 28156. Good luck with it!
Terry
Terry, NJ is offline   Reply With Quote
Old 04-13-2019, 08:10 AM   #9
Joe K
Senior Member
 
Joe K's Avatar
 
Join Date: Jul 2010
Location: Cow Hampshire
Posts: 4,173
Default Re: Banjo saga continues

My reason for machining the bearing stop is to provide "full bearing" for the bearing inner race.

A "knife edge" (or semblance thereof) is quick to wear down - shimmed or not.

Joe K
__________________
Shudda kept the horse.
Joe K is offline   Reply With Quote
Old 04-13-2019, 10:07 AM   #10
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,367
Default Re: Banjo saga continues

I think Ford had replacement in mind for damaged differential cases and other rear axle parts. The parts were inexpensive at the time so repairs would not have even been considered at the time. Good used parts are still around now days but not as easy to find.
rotorwrench is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 05:34 AM.