Driven Gear
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Mountain Pass
Joined: Feb 2019
Posts: 171
Likes: 5
So I think there are a couple issues.
First, per the diagram there looks to be a washer numbered 17288 which seats between bearing and drive gear. After drive gear is part 7A011. Think it might be spacer. Assuming diagram is right that's two missing pieces which could allow drive gear to move on output shaft.
Second, it's the wrong driven gear per number Bill gave and the one I originally pulled out.
Is there possibly a driven gear I could mate to this drive gear?
And what are I believe two missing parts?
First, per the diagram there looks to be a washer numbered 17288 which seats between bearing and drive gear. After drive gear is part 7A011. Think it might be spacer. Assuming diagram is right that's two missing pieces which could allow drive gear to move on output shaft.
Second, it's the wrong driven gear per number Bill gave and the one I originally pulled out.
Is there possibly a driven gear I could mate to this drive gear?
And what are I believe two missing parts?
Logistics Pro
Joined: Jun 2003
Posts: 3,928
Likes: 276
So I think there are a couple issues.
First, per the diagram there looks to be a washer numbered 17288 which seats between bearing and drive gear. After drive gear is part 7A011. Think it might be spacer. Assuming diagram is right that's two missing pieces which could allow drive gear to move on output shaft.
Second, it's the wrong driven gear per number Bill gave and the one I originally pulled out.
Is there possibly a driven gear I could mate to this drive gear?
And what are I believe two missing parts?
First, per the diagram there looks to be a washer numbered 17288 which seats between bearing and drive gear. After drive gear is part 7A011. Think it might be spacer. Assuming diagram is right that's two missing pieces which could allow drive gear to move on output shaft.
Second, it's the wrong driven gear per number Bill gave and the one I originally pulled out.
Is there possibly a driven gear I could mate to this drive gear?
And what are I believe two missing parts?
So with everything in place and bolted up are you saying that the gear has the ability to spin freely on the shaft as well as move back and forth a bit?
*EDIT: I checked my earlier manual and it shows a ball. Your later trans doesn't have that, obviously.
There does appear to be a spacer between the rear case bearing and the speedo gear. That gear needs to be tight on the shaft (unable to spin on the shaft) with the output yoke attached and tightened. From your pics it appears that your gear has been spinning on the shaft.
Leave the extension housing off and put everything back on the shaft and tighten the yoke and see if the speedo drive gear is tight on the shaft. If it isn't, how much slop is there, back and forth?
Thread Starter
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Mountain Pass
Joined: Feb 2019
Posts: 171
Likes: 5
"So with everything in place and bolted up are you saying that the gear has the ability to spin freely on the shaft as well as move back and forth a bit?"
Moves back and forth about a 1/16". Thinking that's enough to apple core driven gear. Curious how thick washer is that goes in front of it.
As for spinning freely pretty somewhat yes. Curious why they didn't make that keyed. Even with those parts having the wrong drive gear makes me leery of trying new driven gear. My hope is someone will know what drive gear that was from and then maybe snoop for a corresponding driven gear.
Further on spinning freely. It must be grabbing some because it ate the driven gear.
Moves back and forth about a 1/16". Thinking that's enough to apple core driven gear. Curious how thick washer is that goes in front of it.
As for spinning freely pretty somewhat yes. Curious why they didn't make that keyed. Even with those parts having the wrong drive gear makes me leery of trying new driven gear. My hope is someone will know what drive gear that was from and then maybe snoop for a corresponding driven gear.
Further on spinning freely. It must be grabbing some because it ate the driven gear.
Logistics Pro
Joined: Jun 2003
Posts: 3,928
Likes: 276
"So with everything in place and bolted up are you saying that the gear has the ability to spin freely on the shaft as well as move back and forth a bit?"
Moves back and forth about a 1/16". Thinking that's enough to apple core driven gear. Curious how thick washer is that goes in front of it.
As for spinning freely pretty somewhat yes. Curious why they didn't make that keyed. Even with those parts having the wrong drive gear makes me leery of trying new driven gear. My hope is someone will know what drive gear that was from and then maybe snoop for a corresponding driven gear.
Further on spinning freely. It must be grabbing some because it ate the driven gear.
Moves back and forth about a 1/16". Thinking that's enough to apple core driven gear. Curious how thick washer is that goes in front of it.
As for spinning freely pretty somewhat yes. Curious why they didn't make that keyed. Even with those parts having the wrong drive gear makes me leery of trying new driven gear. My hope is someone will know what drive gear that was from and then maybe snoop for a corresponding driven gear.
Further on spinning freely. It must be grabbing some because it ate the driven gear.
https://www.transpartsonline.com/TRA...sPartsType=FMX
...part #272 is what you are missing. Not only does it space and center the drive gear onto the driven gear, it also allows the yoke nut to tighten up the entire assembly (preventing the drive gear from spinning.)
If you are unable to find one online, you could have one made. You already know the inside diameter it needs to be because it would match the inside diameter of the drive gear. You could determine the thickness using a dial indicator or if you don't have one you could use the stick end of a Vernier calipers and if you don't have that, you could use a feeler gauge and stack blades until you find something that will fit snugly in the spacer gap, then I would add another .010"-.020" to that number to make sure everything will be snug once assembled.
Just make sure the outside diameter of the spacer is below the depth of the teeth on the driven gear.
Thread Starter
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Mountain Pass
Joined: Feb 2019
Posts: 171
Likes: 5
I agree 272 is missing part. We went to fastenal and picked up washer but it's to thick. Guessing it needs to be around 1/16"
"preventing the drive gear from spinning" This is the part I can't wrap my head around. It needs to spin exactly as the transmission shaft otherwise it won't spin driven gear. When we put washer that was to thick in nothing spun. So the right sized washer should allow shaft and drive gear to spin freely but prevent any forward/backward slop.
True we could probably have one made but until we get a handle on either new drive gear or if we can make this one work we are at a standstill.
"preventing the drive gear from spinning" This is the part I can't wrap my head around. It needs to spin exactly as the transmission shaft otherwise it won't spin driven gear. When we put washer that was to thick in nothing spun. So the right sized washer should allow shaft and drive gear to spin freely but prevent any forward/backward slop.
True we could probably have one made but until we get a handle on either new drive gear or if we can make this one work we are at a standstill.
Logistics Pro
Joined: Jun 2003
Posts: 3,928
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I agree 272 is missing part. We went to fastenal and picked up washer but it's to thick. Guessing it needs to be around 1/16"
"preventing the drive gear from spinning" This is the part I can't wrap my head around. It needs to spin exactly as the transmission shaft otherwise it won't spin driven gear. When we put washer that was to thick in nothing spun. So the right sized washer should allow shaft and drive gear to spin freely but prevent any forward/backward slop.
True we could probably have one made but until we get a handle on either new drive gear or if we can make this one work we are at a standstill.
"preventing the drive gear from spinning" This is the part I can't wrap my head around. It needs to spin exactly as the transmission shaft otherwise it won't spin driven gear. When we put washer that was to thick in nothing spun. So the right sized washer should allow shaft and drive gear to spin freely but prevent any forward/backward slop.
True we could probably have one made but until we get a handle on either new drive gear or if we can make this one work we are at a standstill.
https://www.ebay.com/itm/Ford-Cruise...gAAOSwUjVcQ6p6
Logistics Pro
Joined: Jun 2003
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"prevent it from spinning" means the drive gear spinning freely on the shaft while the shaft is not spinning.
I would use the drive gear that you have. If it is an 8 tooth gear as the part number suggests, it's the right gear.
I would use the drive gear that you have. If it is an 8 tooth gear as the part number suggests, it's the right gear.
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Logistics Pro
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*Edit: Actually the pics aren't really clear enough to determine if your gear is damaged. I do know that your drive gear wasn't spaced properly and was likely spinning on the shaft. If you cannot find a drive gear then you have no other viable choices really than to get a new driven gear and give it a try.
Logistics Pro
Joined: Jun 2003
Posts: 3,928
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C5TZ-17285-C
This guy shows one drive gear in stock...
https://nospartsltd.com/?s=C5TZ-1728...t_type=product
This guy shows one drive gear in stock...
https://nospartsltd.com/?s=C5TZ-1728...t_type=product
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
C5TZ-17285-C
This guy shows one drive gear in stock...
https://nospartsltd.com/?s=C5TZ-1728...t_type=product
This guy shows one drive gear in stock...
https://nospartsltd.com/?s=C5TZ-1728...t_type=product
There haven't been any of these available anywhere for several years.
I couldn't get the link to work...
Logistics Pro
Joined: Jun 2003
Posts: 3,928
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Type C5TZ-17285-C on rearcounter.com = Out-of-stock
There haven't been any of these available anywhere for several years.
I couldn't get the link to work...
There haven't been any of these available anywhere for several years.
I couldn't get the link to work...
Link works on my PC.
NOS Parts LTD.
Phone: 972-937-2201
sales@nospartsltd.com
Logistics Pro
Joined: Jun 2003
Posts: 3,928
Likes: 276
Gonna be a hard part to get then, unless someone has a pile of old transmissions lying around that they are willing to part out.
The Ebay link I posted shows a tailshaft and yoke out of a '66 truck trans so maybe the dude has the gear and spacer lying around, too.
The Ebay link I posted shows a tailshaft and yoke out of a '66 truck trans so maybe the dude has the gear and spacer lying around, too.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
Hmm...Says 1 in stock, call for availability. Other items on the link say "add to cart" but this one says call for availability so they prolly don't have it anymore.
Link works on my PC.
NOS Parts LTD.
Phone: 972-937-2201
sales@nospartsltd.com
Link works on my PC.
NOS Parts LTD.
Phone: 972-937-2201
sales@nospartsltd.com
Rear counter says inre to NOS PARTS LTD: Recently updated, which means they corrected their inventory, which included purging the parts they had sold.
Guess NOS forgot to update their website. AFAIK, there's only two people running the show, the owner and a gal that may/may not be his wife.
During the week, the gal sometimes answers the phone, because he's not there...might have a "real" job elsewhere.