t10 help
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 1
t10 help
Hi folks! My name is George been a mechanic since the early 80's. I am currently working on a 59 T10. My problem is it is jumping out of third gear. I have replaced every part that is involved with third gear and it still jumps out. When I say every thing it literally is every thing except the main shaft. the slider is a torque lock just so I don't have everyone telling me that will be the fix. any insight as to what I am missing would be appreciated. By the way it came in because it was jumping out of second wile I was in there third gear had quite a lot of wear so I thought I would put in a new gear. So now it has new 2nd gear new 3rd gear new syncro rings new sliders new forks all new bearings seals and gaskets.
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Joined: Jan 2003
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From: Central Arkansas
Wow - tis the month for transmissions to pop out of gear I guess. I would suggest in your situation you give either Paul at Paul'5 speeds a call (https://www.5speeds.com/) or Larry at D&L Transmission (http://www.dandltransmission.com/) a call and tell him what work you have already done and that it's still jumping out of gear. Both are Muncie gurus but I'm sure both work on T10s a lot. DZAuto here on the forum also does a lot of rebuilding/repair on these.
If I understand right it was originally jumping out of second but after you went through it and replace most everything, it now is jumping out of third - is that correct?
Are you running a stock bellhousing and shifter? Is the countergear shaft register in the front of the case wallowed out by chance (doesn't seal good anymore - maybe mainshaft and countershaft spread apart due to worn case)?
Hope you find an answer,
If I understand right it was originally jumping out of second but after you went through it and replace most everything, it now is jumping out of third - is that correct?
Are you running a stock bellhousing and shifter? Is the countergear shaft register in the front of the case wallowed out by chance (doesn't seal good anymore - maybe mainshaft and countershaft spread apart due to worn case)?
Hope you find an answer,
Race Director
Joined: Apr 2005
Posts: 11,265
Likes: 2,131
From: Bowling Green, Kentucky
Wow - tis the month for transmissions to pop out of gear I guess. I would suggest in your situation you give either Paul at Paul'5 speeds a call (https://www.5speeds.com/) or Larry at D&L Transmission (http://www.dandltransmission.com/) a call and tell him what work you have already done and that it's still jumping out of gear. Both are Muncie gurus but I'm sure both work on T10s a lot. DZAuto here on the forum also does a lot of rebuilding/repair on these.
If I understand right it was originally jumping out of second but after you went through it and replace most everything, it now is jumping out of third - is that correct?
Are you running a stock bellhousing and shifter? Is the countergear shaft register in the front of the case wallowed out by chance (doesn't seal good anymore - maybe mainshaft and countershaft spread apart due to worn case)?
Hope you find an answer,
If I understand right it was originally jumping out of second but after you went through it and replace most everything, it now is jumping out of third - is that correct?
Are you running a stock bellhousing and shifter? Is the countergear shaft register in the front of the case wallowed out by chance (doesn't seal good anymore - maybe mainshaft and countershaft spread apart due to worn case)?
Hope you find an answer,
and perhaps DZ AUTO (Tom) will weigh in with some additional advice.Has bell housing been "dialed in" to remove all runout, and what is condition of pilot bushing??
Larry
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 1
I put a new clutch kit in when I had it out the first time. bell housing seems to be centered. Yes Dan was not jumping out of third until I replaced all the parts. Now second gear is fixed but third gear will not stay engaged on decell.
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Joined: Apr 2005
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From: Bowling Green, Kentucky
Larry
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Joined: Apr 2005
Posts: 11,265
Likes: 2,131
From: Bowling Green, Kentucky
We (C2 Corvette Forum) have a Browell tool available to check bell housing center if you want/need it. Just have to ask and pay shipping to/from your house. DucatiDon ownes the tool.
Also easy to setup and use a dial indicator. I have a tech paper on how to do this task if you want it.
Larry
EDIT: https://www.corvetteforum.com/forums...ment-tool.html
Also easy to setup and use a dial indicator. I have a tech paper on how to do this task if you want it.
Larry
EDIT: https://www.corvetteforum.com/forums...ment-tool.html
Last edited by Powershift; Jan 17, 2020 at 03:15 PM.
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I don't know where he is located, so I can't recommend someone for him to take it to.
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From: Fresno California
I'll dive in here.....put it in 3rd gear with the shifter, and then get under the car and move the shift arm with your hand and see if it moves further into gear. You may have too short a throw on the 3-4 shift rod. You need to verify that it is indeed going all the way into third. If indeed it is, you have internal issues, and as DZ said, it needs to be pulled and examined on the bench.
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 1
I have verified full engagement. I have the trans on the bench and really the only thing I see is that the new third gear has thicker teeth than the original gear. All of the aftermarket gears that I have found are the same as the one I have.
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6th Gear
Joined: Jun 2009
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Drifting
Joined: Nov 2007
Posts: 1,711
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From: Hightstown NJ
Verne
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 1
So I finally have the third gear problem fixed. Turned out that the thicker gear was the problem. Called Larry and he said that the new wide gears are machined a little big for the bushing. Larry had the thin gear with the bushing. Works like a charm.
Drifting
Joined: Aug 2004
Posts: 1,294
Likes: 295
From: Galveston & Belton Texas
Larry at D & L transmissions is one super guy so hope others will feel confident in doing business with him! Just felt compelled to add this. I am in Texas and he is in New York and distance was not an issue.
Last edited by tgtexas02; Jan 28, 2020 at 05:13 PM.
Drifting
Joined: Nov 2007
Posts: 1,711
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From: Hightstown NJ
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 1