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Old 08-28-2006, 02:58 PM
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TH-350 - Internal or Linkage Problem??

This is on my 76 K-5 Blazer (column shift).

Occasionally the shifter binds up. It is near impossible to get it into park and very hard to get it into the other gears. This has only happened upon arrival to my destination when attempting to put it in park.

I suspect my linkage is binding at the transmission shifter/coupling thing-a-ma-jig but would like to know if anybody has heard of/experienced this problem due to some internal problem.

Thanks

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Old 08-30-2006, 08:55 AM
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try this

disconnect the tramsmission lnkage from the tramsmission.After you chock the wheels move the tramsimission lever back and forth feeling for any bind. Usually if you have a problem internally either you will have no park of the transmission will not work because the selector valve inside the unit is no moving.
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Old 08-30-2006, 10:33 AM
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The problem happens intermittently. Maybe once a month, at most. I don't recall if it started to happen after I lifted my truck which included lowering the transfer case by installing a 1" spacer between the trans crossmember and frame.

Yesterday, I added a one inch spacer between the frame and the holder for the L-bar shifter arm/linkage do-bob.

Time will tell if it was a binding issue.

I am just curious if there are any internal issues which would have those symptoms.

When moving the lever by hand, at the trans, w/ the shifter disconnected, the shifts seem fine (from novice trans experience). Clicks into each gear.

But as I said before, the problem is intermittent.
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Old 09-16-2006, 10:20 AM
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The problem is still there. I'm wondering if it may be an issue inside of the column.

If I jerk the shifter up and down quickly, a couple of times, it loosen up and shifts normally again.
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Old 09-18-2006, 07:48 PM
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A trans shop said that the bolts that attach the shifter inside the trans may be backing off and binding with the valve body. I'll be dropping my pan tonight to check that out.


I will continue with the almost solo thread.

The follow up:
A bolt came loose from the metal plate bolted to the valve body and was floating around in the pan. It must have been in the wrong place at the wrong time causing the shifting mechanism to wedge against it, thus making it difficult to shift gears.

Maybe this thread will help somebody in the future.

P.S.
Prepare to have a big mess when opening up an auto trans.

Last edited by 70bird; 09-19-2006 at 11:12 PM. Reason: Adding the follow-up w/o starting new thread
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Old 09-19-2006, 11:13 PM
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