3 speed: (With pics) Placement of Transfer drive gear, PTO Driving gear, spacers

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melvinjo

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Pics are worth a 1000 words, so here is pic of my question area. Tranny and transfer case are 1967 year

What you see is a pic of the 3 speed output shaft with the 2 gears and 2 spacers in question. I don't know their orientation, which goes where, specifically the spacers and the PTO drive gear

The transfer case has been removed to easier see the parts in question

FROM RIGHT TO LEFT

Geras1.webp


PTO driving gear (Note it has 2 shoulders at the output shaft: One is slightly thicker than the other, and I dont know which way this gear should be placed

Two spacers: One is wider than the other: Which one goes where: Before the gears, after the gears, in between?

Transfer drive gear: I believe this gear is in place, and oriented correctly: Double check my work

Please help: My rebuild is complete and this is the only thing thats holding me up

FSM, SOR diagrams, even coolermans rebuild site (which is excellent) couldnt help
 
Living in the Past said:
Somebody did something funky. No spacer go between the input gear and PTO gear.
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The FSM does state there are two spacers to be used: Page 3-12, at the bottom of the page, in short says: "Note placement of the PTO driving gear and the two PTO driving gear spacers prior to removal"

My problem is that they fell out when I removed the output shaft so I didn't have any reference to remember them from to begin with. What makes the prob worse is that these two spacers and the proper orientation of the PTO driving gear aren't shown in any diagram or exploded view in the FSM
 
I agree that the transfer gear is backwards. Unfortunately, with my new setup, I have no pto gear anymore. I have a sm465 with modified output shaft and adapter plate so I'm no help here.
 
If you don’t use the PTO gear then you would use a spacer in its place. That spacer is the same overall length as the gear. The second spacer goes on the out board side of the outer bearing then a washer and finally the nut. Also as noted you show the inner drive gear facing the wrong direction. The two spacers are different lengths and will not work if switched around.
 
Warloc said:
If you don’t use the PTO gear then you would use a spacer in its place. That spacer is the same overall length as the gear. The second spacer goes on the out board side of the outer bearing then a washer and finally the nut. Also as noted you show the inner drive gear facing the wrong direction. The two spacers are different lengths and will not work if switched around.
Click to expand...

Never checked shaft diameter of the 10 spline verses the sixteen spline to see if there are the same. But the three speed always had a PTO gear. Wasn't until the four speed was a spacer used. Probably easier finding a three speed PTO gear than a four speed spacer. Been twenty-four years since I installed a four speed in my 68. Used the original transfer case. So I removed all the pieces that were on the three speed tailshaft. Probably still have them somewhere. Someone else who done the conversion more resent probably has all the parts needed as well.


Do have a question for original poster are you still running the original three speed? If not probably explains this strange setup.
 
Well, I am the original poster. What's getting lost in this post is that my original setup, and I was running it as such until the rebuild, had the Transfer gear, two spacers and the PTO gear, as shown in my original post: I still don't know really where the two spacers (shown in my posted pic go
 
melvinjo said:
Well, I am the original poster. What's getting lost in this post is that my original setup, and I was running it as such until the rebuild, had the Transfer gear, two spacers and the PTO gear, as shown in my original post: I still don't know really where the two spacers (shown in my posted pic go
Click to expand...


At be the way you originally got the cruiser but it did not leave the factory that way.
 
Early 3 speed transfer cases did have both spacers, note in the first photo that the PTO gear is narrower on it's hub than later models that do not need the spacers. Sequence as follows......Input gear (flipped around) Large spacer P/N 90560-36128, PTO gear, shorter hub towards the front, Small spacer P/N 90560-35082, rear bearing, rear spacer, lock tab, nut. You can use a later PTO gear and not use spacers. HTH, John
DSC03883.webp
 
pardion said:
Early 3 speed transfer cases did have both spacers, note in the first photo that the PTO gear is narrower on it's hub than later models that do not need the spacers. Sequence as follows......Input gear (flipped around) Large spacer P/N 90560-36128, PTO gear, shorter hub towards the front, Small spacer P/N 90560-35082, rear bearing, rear spacer, lock tab, nut. You can use a later PTO gear and not use spacers. HTH, JohnView attachment 1726396
Click to expand...
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You mean the correct PTO gear for a 67. I have a few of the early to mid 63 transmissions and transfer cases. I also have the VIN numbers for the 40 and 45 when the PTO gear became standard in the transfer case some time in 1962.
Still would want it the way it should be for a 67. The wear on the input gear where seal rides looks well worth. That is already a issue with oil from the transfer case making it's way to the transmission. You could as you say use the early spacer but those are rarer than the mid 63 to early 74 model PTO gear. You probably have some wouldn't those still require the extra spacers or is there a separate diagram for the ones with a spacer verses the PTO gear. I know the four up to 8/80 had many more with a spacer than a PTO gear but never heard anyone able to find a part number for the spacer that was used instead of PTO gear.
But now looking at the first picture didn't mid 63+ three speed a tampered end on the splines? Could the whole thing be earlier three speed? :hmm:


If it is a early T/T and not running a PTO using the wider or the narrower spacer between doesn't matter. Could run the two spacer behind the PTO gear. All the spacers do is locate the PTO gear in the correct location. No matter how you install them the length is the same. Just wouldn't use the two spacers together between the gear. Might have a clearance issue with the PTO gear and the housing. The input on the other hand matters since it lines of the gear with the idler gear and seal on the front. Pictures of the transmission from the right side and back of the transfer case.
 
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