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PTO controller

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GaryArf View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GaryArf Quote  Post ReplyReply Direct Link To This Post Topic: PTO controller
    Posted: 18 Aug. 2008 at 12:29am
This controller looks like a later version. It's tag says "Dana, Spicer" (these Co's must have merged?)
The attatched drive shaft set-up is different than the standard hollow tube type. it looks like for a solid round stock W/keyway. It has a u-joint that tells me it probably had a carrier bearing in the shaft somewere.... Anyway here is the pto controller part No. from the '49 parts list. (I'm sure that someone will show the earlier version)
 
                                   Group 35 - 05 Power take-off Front Unit
 
Power Take-off, Front Unit, Assembly...................Part No. 640633
 
 
 
 
 
 
 
       
CJ2A #10021 #34692 #58500



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Chip Austin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chip Austin Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug. 2008 at 2:42am
Hi Gary that u joint style is what is referred to as ''pin & block''. They are used in reasonably low speed / low torque applications . There are no needles ... the 4 pins are fit into the cast iron "block'' which has the grease fitting in the center and are usually swedged or peened into the yoke so they don't fling out when the joint spins. They are /were a low cost alternative to use on a drive line that doesn't see lots of use or high loads, they were throw away items, no joint to change when they wear out . The one in you picture looks like 3/4'' bore X 3/16 '' key way slip yoke. A closer look at the area under the safety wire /set screw makes me wonder if it has been welded to the hub that its mated up to..... that sure looks like a rusty pass of 6011 to me . Who knows for sure but it looks like something that was refitted into a jeep somewhere along the way when an original failed or was lost . I believe gear reducer out put mounted at the draw bar would be the only other point of support needed in a typical cj rear pto situation .   Chip    
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GaryArf View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GaryArf Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug. 2008 at 3:14am
Here is what was on the drawbar that had this PTO on it. It looks like it may have operated a pump or maybe something like a pipe threader????
 

CJ2A #10021 #34692 #58500



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Chip Austin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chip Austin Quote  Post ReplyReply Direct Link To This Post Posted: 18 Aug. 2008 at 3:35am
Wow !
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chip Austin Quote  Post ReplyReply Direct Link To This Post Posted: 19 Aug. 2008 at 3:19am
Gary I have had this nagging image all day of that mounting plate in the last picture. I just figured out why. I once built a winch for one of my projects out of a good sized industrial worm drive gear reducer. That picture reminded me of the mount I made to hold it up , (not on a jeep) I bet the group of 4 mounting pads that are close together on the left are where a gear box bolted down and the other 2 pads were the support bearing mount for the other end ... in between was a belt pulley or a winch spool of some sort . They had it jacked way up so the pto could come out above the rear frame cross member, but below the tailgate surround channel. Somebody had some big chunks steel kicking around .     Chip
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sammy Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug. 2008 at 3:06am
I have 2 of them, very relaxing and enjoyable to rebuild, 2 semi throw out bearings, 1 D18 seal, and it's done. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Howard Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec. 2008 at 7:15pm
Thought I would add to Gary's post...
Lever is in Group 35-03
640659 Lever, 640624 Plate,640626 Plate, 640625 Seal, 640623 Screws x 4
 


Edited by Howard - 14 Dec. 2008 at 7:21pm
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 48cj2a Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan. 2022 at 9:30pm
Spicer 18H PTO Rear Seal

National 473229 
SKF 15655
SPICER 34968

From post: https://www.thecj2apage.com/forums/spicer-18h-seal_topic24522.html

Cross reference from (Original seal) A-958:  SKF/CR 15655

National 473229 crosses to SKF 15635
Victor 49372 crosses to both SKF 15655 & 15635

15635 &15655 are identical dimensionally
15635 is double-lipped
15655 is single-lipped
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