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AT3 Crank Seal replacement reinstall

  • bdk437
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Replied by bdk437 on topic AT3 Crank Seal replacement reinstall

Thanks for following....
The key only curls up if I put the armature inside the cap and try to push it all on at once.... When it doesn't go I find the key is standing up.
I armature on first and then tighten down on taper works fine. Then try to put cap on and it will not go. I'll take a few pictures tomorrow. Im sure it something dumb that Im missing....
24 Jun 2022 17:51 #11

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Replied by RT325 on topic AT3 Crank Seal replacement reinstall

Look forward to pics. Brushes bumping the end of the comutator [armature] sounds like whats happening but i'm sure i used to pull them way out so the springs run against the side of the brushes to hold then back [up out of the way] untill all screwed home in place.
24 Jun 2022 18:57 #12

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Replied by bdk437 on topic AT3 Crank Seal replacement reinstall

     

here are some images
25 Jun 2022 06:38 #13

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Replied by bdk437 on topic AT3 Crank Seal replacement reinstall

Pictures below... Thought I lost them
25 Jun 2022 07:02 #14

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Replied by MarkT on topic AT3 Crank Seal replacement reinstall

I'm confused by the pictures.  But that's not unusual for me.

Only thing that looks obvious is the "indexing" of the stator doesn't look right...  not rotated in right position?  Not sure that's an issue though. 

Here's a pic from Cap't Dave of what one looks like assembled...  note how junction block section on yours  is not where it should be and I'm not sure what last pic with governor in place shows?  But you can see it need to be rotated maybe 20 degrees CCW?   There should be indexing pins it fits over I think? 




.


 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
25 Jun 2022 07:08 #15

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Replied by bdk437 on topic AT3 Crank Seal replacement reinstall

The stator is not correct because im first trying to get the flush with the armature. That why I sent a picture to look through the hole of cap that the armature is NOT flush with the cap. I can not seem the get the stator down over the armature! See pictures. I am very aware of the location pins but I can’t get the cap far enough on to worry about that yet. I’ve tapped cap with hammer but cap is being blocked 
Last edit: 25 Jun 2022 08:56 by bdk437.
25 Jun 2022 08:42 #16

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  • Dennis D
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Replied by Dennis D on topic AT3 Crank Seal replacement reinstall

I have in the past, when I was having trouble keeping the key in the slot, cleaned the 
slot with brake clean, thinner, something that will evaporate and not leave a residue, 
and cleaned the key and used a drop of red loctite to secure the key in the slot. Make
sure the key is parallel with the shaft and not high on one end. Let the loctite set up
before installing,
25 Jun 2022 08:56 #17

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Replied by bdk437 on topic AT3 Crank Seal replacement reinstall

Got it. Just hit it much harder and finally found threads and tightened up. 

Thanks guys! Did not expect to have to hit it that hard!
25 Jun 2022 09:29 #18

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Replied by MarkT on topic AT3 Crank Seal replacement reinstall

Congratulations.  I don't remember ever having to hit one but memory is not perfect. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
25 Jun 2022 12:40 #19

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Replied by RT325 on topic AT3 Crank Seal replacement reinstall

Bit worried about what ya hitting hard. Key must've been resisting armature going on for some unknown reason. Good she's sorted. Came off there so had to go back on.
25 Jun 2022 17:08 #20

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