- City
- Biloxi
- State
- MS
More backward progress
When I reassembled the T5 last night, I later found two "left over parts". These things are not supposed to have left over parts
Totally my fault, getting in a hurry, not concentrating, etc.
Well, the easy part first. I forgot to install the o-ring on the reverse idler shaft. I believe this O-rings purpose is to keep the face of the reverse idler gear from rubbing on the face of one of the cluster gears teeth. If you don't use it, maybe it will result in some weird sounds. Anyway, it is supposed to be there, so I put it back in. Which entailed tearing the whole transmission back down, which isn't too bad, except for having to scrape/clean all the new sealant off
Picture of the o-ring.
And installed. Looking up from the bottom, you will see the roll pin, the aluminum boss the rod rides in, the black ring which is the o-ring, and then the gear.
Ok, that is easy enough. The second left over part is this small BB. There is a large BB that is part of the shifter mechanism, which is installed. I do not know where this little BB goes. I took this transmission apart last September, so I do not recall where it was. It might have just fell in the case while it was sitting on the shelf?
But, and this has me concerned a little bit: The FSM and the Factory T5 rebuild book mention a roll pin being installed behind first gear, on the output shaft. I do not see how this is possible/necessary. I am thinking, probably wrong, that I used this BB in place of a roll pin, but I do not see how that would work??
In this picture the main shaft is resting with the front on the ground, output end sticking up. There is a factory installed press hub on this shaft that I did not remove, not sure if you can. Assembly, from the hub to the rear:
pressed on hub/synchronizer assembly CHECK
first gear blocking ring CHECK
first gear CHECK
The FSM then calls for installing a "first gear roll pin". You can see a hole in the main shaft for a roll pin, little BB is in the picture, too. Note how first gear is exactly where it has to be on the shaft.
Any type of roll pin installed in this hole will not allow the first gear thrust washer to sit flush against back face of the gear, which it has to. In this picture, kind of blurry, the thrust washer is installed without a roll pin. It sits flush/perfect.
And with the bearing installed, sitting exactly how/where it is supposed to be.
So, I left it like this last night.
I thought about it some more, and I kind of remember using a roll pin when I assembled one of these T5's, I think the one that is currently in the Scrambler. But, I also kind of remember that it has/had a funky first gear thrust washer, it had a larger OD and maybe a notch to clear the roll pin?? I do not remember??
I found this link this morning:
http://www.ttcautomotive.com/English/media/pdfs_autogen/T-5_Service_Manual.pdf
This "non World Class T5" rebuild instructions DO NOT picture/mention the elusive "First Gear Roll Pin".
I am no engineer, obviously, but in this T5 I am currently rebuilding, I do not see how a roll pin can be used, unless I use a different thrust washer.
But, I also do not see why a roll pin is even needed. First gear is kept from sliding forward by the pressed on hub. The roll pin would keep it from walking backwards, BUT when you bolt the rear half of the transmission case on, you hold the rear bearing from walking back out. So, there is no where for first gear to go. Maybe the roll pin is only used to aid in assembly? When you install the main shaft in the case, you have to tilt it to the rear, and first gear will slide off, unless you hold it in place with your fingers.
If I can't think of why this roll pin is used, I am just going to put it back together without it. Looking at how it goes together, it would serve no purpose except as an aid when installing the main shaft in the transmission case.
I might pull the old transmission out first, and see how it went together, before reassembling this one. I bet that if it has a first gear roll pin installed it also has a funky first gear thrust washer installed, too.
Speaking of the broke transmission, I drained the ATF out of it last night, and got a few "thunks" in the drain pan. When I felt inside the drain hole, the entire bottom of the transmission is full of shrapnel. It should be some good carnage pictures.
That's it for now.
When I reassembled the T5 last night, I later found two "left over parts". These things are not supposed to have left over parts
Totally my fault, getting in a hurry, not concentrating, etc.Well, the easy part first. I forgot to install the o-ring on the reverse idler shaft. I believe this O-rings purpose is to keep the face of the reverse idler gear from rubbing on the face of one of the cluster gears teeth. If you don't use it, maybe it will result in some weird sounds. Anyway, it is supposed to be there, so I put it back in. Which entailed tearing the whole transmission back down, which isn't too bad, except for having to scrape/clean all the new sealant off
Picture of the o-ring.
And installed. Looking up from the bottom, you will see the roll pin, the aluminum boss the rod rides in, the black ring which is the o-ring, and then the gear.
Ok, that is easy enough. The second left over part is this small BB. There is a large BB that is part of the shifter mechanism, which is installed. I do not know where this little BB goes. I took this transmission apart last September, so I do not recall where it was. It might have just fell in the case while it was sitting on the shelf?
But, and this has me concerned a little bit: The FSM and the Factory T5 rebuild book mention a roll pin being installed behind first gear, on the output shaft. I do not see how this is possible/necessary. I am thinking, probably wrong, that I used this BB in place of a roll pin, but I do not see how that would work??
In this picture the main shaft is resting with the front on the ground, output end sticking up. There is a factory installed press hub on this shaft that I did not remove, not sure if you can. Assembly, from the hub to the rear:
pressed on hub/synchronizer assembly CHECK
first gear blocking ring CHECK
first gear CHECK
The FSM then calls for installing a "first gear roll pin". You can see a hole in the main shaft for a roll pin, little BB is in the picture, too. Note how first gear is exactly where it has to be on the shaft.
Any type of roll pin installed in this hole will not allow the first gear thrust washer to sit flush against back face of the gear, which it has to. In this picture, kind of blurry, the thrust washer is installed without a roll pin. It sits flush/perfect.
And with the bearing installed, sitting exactly how/where it is supposed to be.
So, I left it like this last night.
I thought about it some more, and I kind of remember using a roll pin when I assembled one of these T5's, I think the one that is currently in the Scrambler. But, I also kind of remember that it has/had a funky first gear thrust washer, it had a larger OD and maybe a notch to clear the roll pin?? I do not remember??
I found this link this morning:
http://www.ttcautomotive.com/English/media/pdfs_autogen/T-5_Service_Manual.pdf
This "non World Class T5" rebuild instructions DO NOT picture/mention the elusive "First Gear Roll Pin".
I am no engineer, obviously, but in this T5 I am currently rebuilding, I do not see how a roll pin can be used, unless I use a different thrust washer.
But, I also do not see why a roll pin is even needed. First gear is kept from sliding forward by the pressed on hub. The roll pin would keep it from walking backwards, BUT when you bolt the rear half of the transmission case on, you hold the rear bearing from walking back out. So, there is no where for first gear to go. Maybe the roll pin is only used to aid in assembly? When you install the main shaft in the case, you have to tilt it to the rear, and first gear will slide off, unless you hold it in place with your fingers.
If I can't think of why this roll pin is used, I am just going to put it back together without it. Looking at how it goes together, it would serve no purpose except as an aid when installing the main shaft in the transmission case.
I might pull the old transmission out first, and see how it went together, before reassembling this one. I bet that if it has a first gear roll pin installed it also has a funky first gear thrust washer installed, too.
Speaking of the broke transmission, I drained the ATF out of it last night, and got a few "thunks" in the drain pan. When I felt inside the drain hole, the entire bottom of the transmission is full of shrapnel. It should be some good carnage pictures.
That's it for now.
