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1972 002 transmission won’t go into gear but shifter feels fine?
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SlowRhode
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PostPosted: Wed Jun 09, 2021 1:58 pm    Post subject: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

My 1972 bus recently had the transmission stop working. A friend was borrowing it and got stranded. Shifter (Scat) feels as if it’s going into gears at it should but it doesn’t. I checked all the couplers/linkages and they seem to work fine. I pulled engine/trans today & was hoping I would find something obvious with the nose cone off. But everything looks as it should.

Any recommendations on next steps to take? I’m kind of at a loss as to why it might act this way ???

I searched the forum and couldn’t find a similar problem so I’m stumped (and probably not very good at searching!)
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aeromech
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PostPosted: Wed Jun 09, 2021 2:15 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

If it shifts fine with the engine off but not with the engine running a place to look is the pilot bearing
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SlowRhode
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PostPosted: Wed Jun 09, 2021 3:08 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

Excellent. Thank you. It actually seemed to shift just fine either engine running or not, which had me perplexed. I’m going to separate the engine and transmission tomorrow and see what I find.
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airschooled
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PostPosted: Wed Jun 09, 2021 3:40 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

So you get the “detent” of the shifter going into gear, you release the clutch, and bus doesn’t move? Check the CV joints, their bolts, and the rear axle splines in its hub.

Robbie
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SlowRhode
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PostPosted: Wed Jun 09, 2021 3:48 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

airschooled wrote:
So you get the “detent” of the shifter going into gear, you release the clutch, and bus doesn’t move? Check the CV joints, their bolts, and the rear axle splines in its hub.

Robbie


Exactly this. CV joints, bolts etc are all in good order (new Axles less than 500 miles on them). Nothing external spins with engine running, in gear and clutch out.
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cmonSTART
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PostPosted: Wed Jun 09, 2021 3:52 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

I suppose while then engine is pulled you could rotate one output shaft and see if the other turns the opposite direction while you do.
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Wildthings
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PostPosted: Wed Jun 09, 2021 4:18 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

Not particularly unusual for a Type 1 flywheel to spin on the crankshaft. I kind of remember someone having this problem on a Type 4 as well. Should be pretty obvious once you separate the engine and tranny.
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airschooled
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PostPosted: Thu Jun 10, 2021 6:31 am    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

Wildthings wrote:
Not particularly unusual for a Type 1 flywheel to spin on the crankshaft. I kind of remember someone having this problem on a Type 4 as well. Should be pretty obvious once you separate the engine and tranny.


How would the starter work? Smile
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danfromsyr
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PostPosted: Thu Jun 10, 2021 8:33 am    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

the splined coupler on the trans input shaft can unscrew from the stud if it's not an updated version

sorry I don't know the technical names

but you may find that the input shaft is going to come out on it's own when you pull the engine.

https://www.thesamba.com/vw/forum/viewtopic.php?p=5717907
gears wrote:
There's a very good reason that you should pick up a new joining screw from the VW dealer .. cost: about $1

Here's the new style ..
Image may have been reduced in size. Click image to view fullscreen.


.. and here's the reason you want it ..

http://www.thesamba.com/vw/forum/viewtopic.php?t=557933
http://www.thesamba.com/vw/forum/viewtopic.php?t=568339
http://www.thesamba.com/vw/forum/viewtopic.php?p=6866970
http://www.thesamba.com/vw/forum/viewtopic.php?t=530289
http://www.thesamba.com/vw/forum/viewtopic.php?t=546488
http://www.thesamba.com/vw/forum/viewtopic.php?t=539881
http://www.thesamba.com/vw/forum/viewtopic.php?t=549819
http://www.thesamba.com/vw/forum/viewtopic.php?t=541494 ?
http://www.thesamba.com/vw/forum/viewtopic.php?t=385776 ?

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SlowRhode
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PostPosted: Thu Jun 10, 2021 10:43 am    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

**Solved**

Separated the engine and transmission, removed the pressure plate to reveal….




No clutch lining on pressure plate side and barely any on the flywheel side.


New kit on the way. Thanks everyone!
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PostPosted: Thu Jun 10, 2021 11:35 am    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

It could be a lot worse!

Glad you found it.
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Oil Phil-M
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PostPosted: Thu Jun 10, 2021 12:35 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

Quote:
A friend was borrowing it


This is the true root cause of your problem Smile
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Wildthings
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PostPosted: Thu Jun 10, 2021 4:39 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

SlowRhode wrote:
**Solved**

Separated the engine and transmission, removed the pressure plate to reveal….




No clutch lining on pressure plate side and barely any on the flywheel side.


New kit on the way. Thanks everyone!


Pictures would be wonderful Smile
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aeromech
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PostPosted: Thu Jun 10, 2021 5:22 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

Check the flywheel for damage. It might need to be machined. Might be a good opportunity to replace the main oil seal too
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danfromsyr
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PostPosted: Thu Jun 10, 2021 7:44 pm    Post subject: Re: 1972 002 transmission won’t go into gear but shifter feels fine? Reply with quote

Oil Phil-M wrote:
Quote:
A friend was borrowing it


This is the true root cause of your problem Smile



indeed, friends don't let friends drive their vintage VWs.
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