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Unread 08-11-2013, 01:13 AM   #30241
Powrjunkey
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It's a sensor, no cable. The gear cannot accept the shaft backwards, there's a square at the end of the shaft, and inside the gear. The get just pushes onto the sensor housing. Even stock, there was about 1/2 of slack lateral travel of the gear on the sensor housing. No damage though. Only since SYE install. The plastic shaft gear inside the SYE has both snap rings in place.

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Unread 08-11-2013, 01:59 AM   #30242
Powrjunkey
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So after scouring the interweb for the last 45 minutes, Ive found NO ONE else has had this issue that i can see. Ive followed all of the install instructions and nothing indicates why this is happening. WTF?
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Unread 08-11-2013, 02:02 AM   #30243
Garza
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Quote:
Originally Posted by Powrjunkey
So after scouring the interweb for the last 45 minutes, Ive found NO ONE else has had this issue that i can see. Ive followed all of the install instructions and nothing indicates why this is happening. WTF?
Did you install the drive gear on the output shaft correctly before you put the tail housing together?.....it does go a certain way, but I've only seen it chew up the plastic gear, not do what you show. But I guess its possible.
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Unread 08-11-2013, 02:08 AM   #30244
Powrjunkey
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Yeah, snap ring, plastic drive gear sleeve, snap ring. Right? I checked to see if it drives the same whether reversed or not. It drives the same direction either way.

It can only go on one way, right? It's acting like the speedo gear is too short and is being thrust up to the housing because its not centered in the middle of the drive shaft gear. Either that, or the marks on the housing are irrelevant with my SYE/ gear tooth combo(doubtful.)
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Unread 08-11-2013, 09:18 AM   #30245
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Would a paper thin metal washer with a bit of high temp grease work between the two?
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Unread 08-11-2013, 09:31 AM   #30246
jokerchief462
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Power junky I am eating speedo gears also in my YJ after the SYE. First worked for about 1K then went. I actually replaced the gear inside the T-Case again. Second gear went right away. I indexed according to the marks on the case housing and checked the FSM to make sure.

Haven't worked it been using a GPS. I did find a thread out there same issue. Bottom line recommendation was to install while turning the shaft to make sure it was aligned to mesh with the blue gear on the shaft and wasn't binding. Index the eccentric at the largest setting for the gear to mesh and disregard the case marks. I know you still have to get the housing in the hold
down bracket.

Hope that is as clear as mid. I still have parts laying around I guess I should fix it.
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Unread 08-11-2013, 12:48 PM   #30247
Powrjunkey
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Thanks for the info. I'm glad at least someone heard of this issue. I may need to come up with another sensor housing, it's pretty mushroomed, and I don't know if it will still work ok. I'll raise the rear and spin the shaft as I insert the gear and see what that does. I'll know after just a few miles.
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Unread 08-11-2013, 01:31 PM   #30248
andy02
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How do you know that the gear actually fails? Does your speedo stop working?
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My issue was I couldn't get the balls centered. I had to use some extra force to get everything lined up right. It didn't take me long.


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Unread 08-11-2013, 01:35 PM   #30249
Powrjunkey
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Quote:
Originally Posted by andy02
How do you know that the gear actually fails? Does your speedo stop working?
No, but it does cause needle float on the gauge at around 65 mph. When I removed the factory sensor/gear assy, there was no such damage to the gear or sensor housing. I can see eventually the mushrooming could get to the point where it allows enough misalignment to destroy the teeth on both gears and have all the tiny melted plastic bits in the pump strainer.
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Unread 08-11-2013, 01:53 PM   #30250
andy02
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Quote:
Originally Posted by Powrjunkey

No, but it does cause needle float on the gauge at around 65 mph. When I removed the factory sensor/gear assy, there was no such damage to the gear or sensor housing. I can see eventually the mushrooming could get to the point where it allows enough misalignment to destroy the teeth on both gears and have all the tiny melted plastic bits in the pump strainer.
Or you could be changing it before it has a chance to take a set. Have you considered that the gear might be out of alignment making the mushrooming necessary to put it into alignment?

Side note: the truck I really wanted that Khris posted a link to a while back has been sold. I am going to go cry now.
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Quote:
Originally Posted by Hendrix
No one really knows the reason for LCOG Jeeps.

Its so short ****s like me and you can still get in.
Quote:
Originally Posted by 2ACR View Post
My issue was I couldn't get the balls centered. I had to use some extra force to get everything lined up right. It didn't take me long.


September 11 2001
Never Forget!
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Unread 08-11-2013, 02:06 PM   #30251
Powrjunkey
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Quote:
Originally Posted by andy02

Or you could be changing it before it has a chance to take a set. Have you considered that the gear might be out of alignment making the mushrooming necessary to put it into alignment?

Side note: the truck I really wanted that Khris posted a link to a while back has been sold. I am going to go cry now.
Why would it mushroom the stock gear and housing? Is the blue drive gear larger than stock? If so, that would confirm what joker was saying about using the largest index and still get readings.
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Unread 08-11-2013, 02:17 PM   #30252
andy02
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Quote:
Originally Posted by Powrjunkey

Why would it mushroom the stock gear and housing? Is the blue drive gear larger than stock? If so, that would confirm what joker was saying about using the largest index and still get readings.
Because the stock housing is no longer supported the way that it was before the SYE. you changed tail housings correct? You had to put the stock speedo housing into the new tail housing?
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Quote:
Originally Posted by Hendrix
No one really knows the reason for LCOG Jeeps.

Its so short ****s like me and you can still get in.
Quote:
Originally Posted by 2ACR View Post
My issue was I couldn't get the balls centered. I had to use some extra force to get everything lined up right. It didn't take me long.


September 11 2001
Never Forget!
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Unread 08-11-2013, 02:21 PM   #30253
Powrjunkey
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No. Used the SYE housing, but the stock sensor and sensor housing. That's the housing I was referring to(speedo sensor housing.)
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Unread 08-11-2013, 02:27 PM   #30254
andy02
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Quote:
Originally Posted by Powrjunkey
No. Used the SYE housing, but the stock sensor and sensor housing. That's the housing I was referring to(speedo sensor housing.)
That is what I mean. You have a SYE tail housing. A stock speedo housing and a stock speedo gear. Now, imagine that the hole in the tails haft housing isn't in the exact same alignment as stock. The gears then have a different offset and therefore align differently than they did stock. It would be similar to adding shims to your pinion gear on your diff but leaving all else the same. The gears don't ride the same and therefore wear differently. Because those gears are made of metal, they don't mushroom but if they were made of plastic they sure as hell would. Once they reached their sweet spot, they would be fine.
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Quote:
Originally Posted by Hendrix
No one really knows the reason for LCOG Jeeps.

Its so short ****s like me and you can still get in.
Quote:
Originally Posted by 2ACR View Post
My issue was I couldn't get the balls centered. I had to use some extra force to get everything lined up right. It didn't take me long.


September 11 2001
Never Forget!
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Unread 08-11-2013, 02:32 PM   #30255
Powrjunkey
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Do you think that's what's happening? Is that normal? Brain says that's not good, but I don't know. Anyone else have an aftermarket SYE that they can pull the speedo gear an look at? Please, pretty please? Rofl
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