|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
08-07-2018, 12:51 PM | #1 |
Member
Join Date: Mar 2017
Posts: 83
|
Speedometer Drive Assy
I have a lot of slide (about 1/2") in my drive gear on my Main Drive Gear Shaft.
This is noticed when the Speedometer Gear and Cap Assy. are removed. I've been told that there should not be that much play (slide) in the Drive Gear for the speedometer. Also told that probably the retainer (ring) is either broken or was never in place after a transmission overhaul. Another theory: I've also been told that the retainer (ring) does not have to be in place as it was only there to keep the gear in place as the new engine was hanging vertically on the way to installation at the factory. I'm totally confused with several different theory's. Help!
__________________
FixitPhil |
08-07-2018, 03:00 PM | #2 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Speedometer Drive Assy
The TURTLE holds the drive gear in the proper FORE & AFT position on the drive shaft.
Bill Simple
__________________
"THE ASSISTANT GURU OF STUFF" |
Sponsored Links (Register now to hide all advertisements) |
|
08-07-2018, 06:51 PM | #3 |
Member
Join Date: Mar 2017
Posts: 83
|
Re: Speedometer Drive Assy
That's what I hear but some say that you have to have that retainer installed to keep it placed????
__________________
FixitPhil |
08-08-2018, 11:43 AM | #4 |
Senior Member
Join Date: May 2010
Location: new britain,ct 06052
Posts: 9,389
|
Re: Speedometer Drive Assy
Are you having a problem??
Paul in CT |
08-08-2018, 12:24 PM | #5 |
Senior Member
Join Date: May 2010
Location: San Diego,Ca
Posts: 1,377
|
Re: Speedometer Drive Assy
From what I understand the retainer ring was only required to keep the gear and bearing in place when the complete axle was transported with the torque tube, which was hanging downwards on its way to the assembly line, it saved time installing the parts on the assembly line, thus keeping the line moving.
__________________
Nothing can be made foolproof, ---- fools are ingenious bastards. Last edited by Brian T; 08-08-2018 at 12:25 PM. Reason: added text |
08-09-2018, 01:24 PM | #6 |
Member
Join Date: Mar 2017
Posts: 83
|
Re: Speedometer Drive Assy
Sponsored Links (Register now to hide all advertisements)
So I'm getting my speedo overhauled and a new cable in place, and then all should be well. Thanks all, Phil
__________________
FixitPhil |
08-09-2018, 03:19 PM | #7 | |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 3,131
|
Re: Speedometer Drive Assy
Quote:
You should not have a 1\2" of play with the speedo drive gear on the drive shaft. I suspect the last person that had the assembly apart neglected to install the grease seal (it is about 1\2" thick). This would allow the bearing race and bearing to drop down that amount. The attached article shows the assembly. Tom Endy |
|
08-10-2018, 04:20 PM | #8 |
Member
Join Date: Mar 2017
Posts: 83
|
Re: Speedometer Drive Assy
Thanks Tom for all your help.
How do I disassemble these parts? I have my engine out now. Do I have to pull the rear end to get to this assy? How do I pull the bearing race out and how do I realign the race with the dimple?
__________________
FixitPhil |
08-10-2018, 06:02 PM | #9 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 3,131
|
Re: Speedometer Drive Assy
About 15 years ago just about all of the suppliers sold a reproduction roller bearing race that was just terrible. Besides being made of poor quality material, it did not have the important dimple to lock it in place. Bratton's finally had a correct race made and several other suppliers followed. However, probably hundreds or thousands got out into the world, and some suppliers probably still sell them.
To answer your question on how to: Go to the web site of the Santa Anita A's of Arcadia,California at www.santaanitaas.org. On the home page put your cursor on "Technical Reference", my name will drop down below, click on it. It will bring up a technical library. Scroll to the differential section and you will find numerous articles that should answer any question you have about the rear axle assembly. They are all PDF files and you are welcome to download any of them. Tom Endy |
08-10-2018, 10:32 PM | #10 |
Member
Join Date: Mar 2017
Posts: 83
|
Re: Speedometer Drive Assy
Boy that sure answers my question. You have a way of writing instructions that simplifies the job at hand.
Your instructions on other repairs on a Model A have come in so handy and are so self explanatory. I know you've helped hundreds of A'ers throughout the years. Thanks again for all, Phil
__________________
FixitPhil |
|
|
Sponsored Links (Register now to hide all advertisements) |
|