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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 77chevystepside on April 23, 2009, 08:32:54 am

Title: 77 transmission shifter removal
Post by: 77chevystepside on April 23, 2009, 08:32:54 am
My 77 1/2 ton stepside has a 4 speed transmission (Muncie, I think??) and I tried to remove the shifter a while ago and could not get it to release. Chilton's says push down on the shifter, rotate clockwise and shifter will come out ???. Did that and it would not release. Truck is at body shop 90 miles away but when I get it home I want to remove tranny. What did I do wrong? Any tips appreciated.
Title: Re: 77 transmission shifter removal
Post by: HAULIN IT on April 23, 2009, 09:57:24 am
The description sounds right, however maybe you misunderstood what to do. The "push down" part, takes the tension off, then you turn the retaining ring "counter-clockwise" (unscrew like) a quarter turn, then the shifter lever pulls up out. Hope this helps, once you do it...you will be saying "Why was that so hard?" Lorne
Title: Re: 77 transmission shifter removal
Post by: Captkaos on April 23, 2009, 10:41:10 am
You are pushing down on the metal collar and twisting and not the shifter right.
Title: Re: 77 transmission shifter removal
Post by: exilous on April 23, 2009, 08:41:16 pm
I believe that is the Muncie M20 trans. ANd what I did is i kind of leaned my shoulder on the shifter then reached down pushed down the little collar and twisted that then it popped right out.
Title: Re: 77 transmission shifter removal
Post by: 77chevystepside on April 24, 2009, 11:10:52 am
I just pushed down on the shifter and rotated it clockwise. Did not know the collar needs to be turned while holding the shifter down. Will give it a try when I get to the truck in a week or so. Thanks guys!!
Title: Re: 77 transmission shifter removal
Post by: Captkaos on April 24, 2009, 11:29:11 am
It is a SM465 (RPO M20) you shouldn't have to do anything to the shifter, just push down on the collar and turn.
Title: Re: 77 transmission shifter removal
Post by: Low87c10 on April 24, 2009, 12:05:26 pm
are you rotating the shifter or the retaining cap? You should be pushing down the cap and turning, not the shifter.
Title: Re: 77 transmission shifter removal
Post by: 77chevystepside on April 24, 2009, 04:13:08 pm
Will give that a try. Thanks. Won't see the truck for a week or so. Will let you know how I did!!