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Greg, it appears that the gear spline is not attached to your output shaft. I see it in the picture. That gear spline interacts with the speedo gear.
Install the output shaft with the spline gear attached at the bottom and see if the speedo gear matches up before you install the housing.
Here are some pics of what you need in order to do the conversion. There is also a picture of the speedo gear without the output shaft installed, so you can see how far the speedo gear reaches into the case.
Last edited by Vette Daddy; Oct 2, 2009 at 12:46 PM.
The gear you see in the pic is from a later model, that gear is too thick and too large to fit on my adapter shaft. So I can use the correct terminology, what I'm calling an adapter shaft between the trans output and the driveshaft yoke is the output shaft? Any idea of a source for the drive gear that slips on the output shaft?
The gear you see in the pic is from a later model, that gear is too thick and too large to fit on my adapter shaft. So I can use the correct terminology, what I'm calling an adapter shaft between the trans output and the driveshaft yoke is the output shaft? Any idea of a source for the drive gear that slips on the output shaft?
So, the round gear that interacts with the speedo gear is incorrect for your application? If so, I have no idea of where to get one.
Brett
Last edited by Vette Daddy; Oct 2, 2009 at 12:48 PM.
This is the gear that you need to fit onto your output shaft. I can send it to you. It appears that it is pressed onto the small yoke. If you can press this gear off, you can attach it to the output shaft. The small yoke and the output shaft are the same OD.
This round small gear is in your post #20, picture #1, #2, #6, in the lower left corner of the picture. Are you saying that it is an incorrect piece from another transmission?
Do you need this?? Brett 765-623-6154
Last edited by Vette Daddy; Oct 2, 2009 at 01:15 PM.
Yes the gear in my post #20 is too large OD and too large ID for the application. It was one my trans shop had laying around from another application. I believe I found a gear with your help. I'll know on Monday if it works. Thanks again everyone for all the guidance.
One thing I notice when comparing your photos to those of Vettedaddy is the position of the plastic, driven gear is different.
In your photo, the plastic gear appears offset towards the driver's side of the transmission. In contrast Vettedaddy's photo shows a gear that is approximately centered over the output shaft; this is more like what I would expect to see.
Is it an optical illusion due to camera angle or am I seeing this accurately?
I'm hoping its a combination of camera angle and the screws that retain the rear bearing are wrong and not allowing the speedo gear assembly to seat completely or straight. The gear assembly is impeded from complete installation due to an overly large screw head. The screw heads are a type of thick pan heads that I will have to change out to help align the gears.
Sorry for rehashing this very old thread but I just got a 54 and trying to change the speedo drive gear and need some help. I have the tail shaft removed and just staring at speedo gear trying to figure out how to take it out. Does it come out with a puller or do I remove the three large output shaft screws and the output shaft extension comes out and I can pull the gear off on the bench. The gear looks beat up and bent on both ends so not sure what the previous owner did to make that happen. Also, where it currently sitting it's not directly aligning with the driven gear. Looks like it needs to be push in towards the tranny about another 3/8th inch.
Can you post photos
The output shaft is attached with a bolt
The speed gear on the sender or speedo gear on the shaft
There are 2 gears
take a look at the photos posted on #20. How do you detach the shaft ( i guess this is an extension shaft??)on pic #4 from tranny output shaft in the first three pics. My Speedo drive gear is pressed on the end of this shaft that I need to get to.
The output shaft - bolts to the end of the transmission shaft with a fine thread bolt washer and lock washer
Slides over the transmision main shaft
I make output shafts - see below - what is not on the photo below is the speedo gear
I am in the process of reproducing them as well
[QUOTE=csherman;1604126607]The output shaft - bolts to the end of the transmission shaft with a fine thread bolt washer and lock washer
Slides over the transmision main shaft
I make output shafts - see below - what is not on the photo below is the speedo gear
I am in the process of reproducing them as well [/QUOTE
how is the fine thread bolted accessed? I don't see it anywhere? Is it inside the shaft reachable by a socket and extension? What size? The pics from post #20 appears to be some kind of clip retainer.
The output shaft - bolts to the end of the transmission shaft with a fine thread bolt washer and lock washer
Slides over the transmision main shaft
I make output shafts - see below - what is not on the photo below is the speedo gear
I am in the process of reproducing them as well [/QUOTE
how is the fine thread bolted accessed? I don't see it anywhere? Is it inside the shaft reachable by a socket and extension? What size? The pics from post #20 appears to be some kind of clip retainer.
Here is a pic of inside of output shaft taken by a borescope from end of output shaft . It shows where output shaft is mated to end of tranny main shaft. I don't see any bolt there. Is that where it's supposed to be bolted? Am I missing the bolt? If so, is there any other clip holding this on. I tried jiggling and pulling but seems to be in there pretty tight.
The output shaft it bolted on - fine thread 9/16 bolt if I remember right
The bolt is inside the shaft - have to use an extension and socket to get to it
Post up what your working on
The output shaft it bolted on - fine thread 9/16 bolt if I remember right
The bolt is inside the shaft - have to use an extension and socket to get to it
Post up what your working on
Did you see my pic posted above. It is the inside of the output shaft taken by a borescope. I see the output shaft over the tranny output spline but don't see a bolt there so technically shouldn't the output shaft just slide off? Am I look at the right place - I don't see where else i would be looking at. Also, I'm not clear on how the bolt would hold the output shaft to the tranny output shaft unless the head of the bolt is large diameter.
should slide right off
a bolt and washer hold the shaft to the other shaft
apparently I'm missing that bolt. Which would explain the shaft sliding out a bit causing misalignment of the Speedo gear on the shaft and shredding the driven gear plastic part. In any case it must now be jammed so I'll finesse it out.
so technically shouldn't the output shaft just slide off? Am I look at the right place - I don't see where else i would be looking at. Also, I'm not clear on how the bolt would hold the output shaft to the tranny output shaft unless the head of the bolt is large diameter.