speedo cable removal

Reply Subscribe

Thread Tools

Search this Thread

Jun 30, 2023 | 11:52 PM

snoozy

Thread Starter

Cross-Country

Joined: Jan 2019

Posts: 53

Likes: 5

speedo cable removal

Hi folks. Speedometer stopped working. Unknown reason. Want to check the speed gear, undid the retaining bolt but cable won't come out of tranny casing. I know it's supposed to pull out, but I don't want to force it. Any ideas? Cable at the dash end seems ok.

72 f100 with 302 and c10(C4) auto, swapped over from 240 straight 6 and Np435 4 speed. Speedo stopped working not long after new drive line installed.
Unsure if the mechanic used the old cable on the new setup, would they be compatible?

Thanks

Jul 2, 2023 | 05:08 AM

FuzzFace2

FTE Legend

Joined: Nov 2015

Posts: 30,935

Likes: 4,123

From: Angier, NC

Little bump

With the cable out of the gauge when moving dose it spin?

As for it they are the same I cant help.
Maybe a parts book on the gears for each trans would say?
Dave ----

Jul 2, 2023 | 08:39 AM

Green72F250

Tuned

Joined: Jun 2014

Posts: 494

Likes: 144

From: Colorado Springs

Maybe this will help, I believe it has the speedometer gear teeth size in it:
Ford Truck Automatic Transmission Application Chart '64-'72 - FORDification.com

Jul 3, 2023 | 01:11 AM

snoozy

Thread Starter

Cross-Country

Joined: Jan 2019

Posts: 53

Likes: 5

Quote:

Originally Posted by FuzzFace2

Little bump

With the cable out of the gauge when moving dose it spin?

As for it they are the same I cant help.
Maybe a parts book on the gears for each trans would say?
Dave ----

I'm not sure how I could possibly check this.

Jul 3, 2023 | 07:58 AM

Lizer

Cross-Country

Joined: May 2022

Posts: 89

Likes: 95

He would have needed to put a new gear on the end possibly—but wouldn’t need to replace the entire cable.

How hard are you trying to force it out? That might be your only option.

Jul 3, 2023 | 07:36 PM

snoozy

Thread Starter

Cross-Country

Joined: Jan 2019

Posts: 53

Likes: 5

Quote:

Originally Posted by Lizer

He would have needs to put a new gear on the end possibly—bit wouldn’t need to replace the entire cable.

How hard are you trying to force it out? That might be your only option.

Yeah, gonna give it another shot

Jul 3, 2023 | 09:01 PM

snoozy

Thread Starter

Cross-Country

Joined: Jan 2019

Posts: 53

Likes: 5

ok, so here's the problem. Worn teeth on the driven gear.
Also, here is the best pic I could take of the drive gear inside g/box. I've been told by someone on an Australian forum that this will now marry up to the plastic driven gear and is the reason why it was so worn/damaged.
Can anyone confirm?
Thanks for the comments.