The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-17-2017, 01:02 PM   #1
dazza
Registered User
 
dazza's Avatar
 
Join Date: Aug 2002
Location: California
Posts: 933
Twilight Zone Neutral

Strange issue with my SM465... Driving along in 4th gear and having my hand resting on the shifter, I hit a bump big enough to cause my hand to throw her into neutral, but I notice that it's not the normal neutral for two reasons... one, it is a much bigger than normal neutral as I can move the stick around in what feels to be a greater size area, and two, it's still in 4th gear and moving forward as normal. I then push in the clutch and drop it down into where 4th is supposed to be with no problem.

This has only happened twice in about the past three months so I haven't considered it an issue until my current situation.

When I get home last night, I put it into reverse to park it and had trouble when I tried to remove it back into neutral. It did finally go with a bit of a struggle. So when I go to leave this morning, it's in neutral and I can't put it into any gear... or so I thought. When I release the clutch, I realize that it is actually still in reverse although feels to be in neutral.

That's where I'm at and I don't have time to learn how to drive everywhere in reverse, or if that's even legal!

Any thoughts? Thanks
__________________
---------------------------------------------------------
I'm not crazy, I'm chosen, there's a difference.
----------------------------
'72 K10 SWB, 350, sm465/np205
---- ----
dazza is offline   Reply With Quote
Old 02-17-2017, 01:47 PM   #2
dazza
Registered User
 
dazza's Avatar
 
Join Date: Aug 2002
Location: California
Posts: 933
Re: Twilight Zone Neutral

Update: Attempting to get it out of reverse, the shifter came loose. Removed boot, ring, and shifter. Going to do some searches here as I recall a certain process for engaging it in the correct position.
__________________
---------------------------------------------------------
I'm not crazy, I'm chosen, there's a difference.
----------------------------
'72 K10 SWB, 350, sm465/np205
---- ----
dazza is offline   Reply With Quote
Old 02-17-2017, 02:15 PM   #3
kehstr
Registered User
 
kehstr's Avatar
 
Join Date: Mar 2015
Location: Utah
Posts: 657
Re: Twilight Zone Neutral

kind of sounds like the shift forks are worn out, but I'm not completely sure. That is weird that it won't come out of reverse...
__________________
72 GMC highlander nicknamed by my 6-year-old brother "stripes"
http://67-72chevytrucks.com/vboard/s....php?p=7378180
kehstr is offline   Reply With Quote
Old 02-17-2017, 02:26 PM   #4
dazza
Registered User
 
dazza's Avatar
 
Join Date: Aug 2002
Location: California
Posts: 933
Re: Twilight Zone Neutral

Thanks,

It's been rebuilt and has less than 8000 miles on it. Forks were fine.

I'm going to take a few pics to show the current alignment.
__________________
---------------------------------------------------------
I'm not crazy, I'm chosen, there's a difference.
----------------------------
'72 K10 SWB, 350, sm465/np205
---- ----
dazza is offline   Reply With Quote
Old 02-17-2017, 02:37 PM   #5
dazza
Registered User
 
dazza's Avatar
 
Join Date: Aug 2002
Location: California
Posts: 933
Re: Twilight Zone Neutral

Here is where it is now:

Name:  File Feb 17, 10 34 30 AM.jpg
Views: 74
Size:  32.3 KB
__________________
---------------------------------------------------------
I'm not crazy, I'm chosen, there's a difference.
----------------------------
'72 K10 SWB, 350, sm465/np205
---- ----
dazza is offline   Reply With Quote
Old 02-17-2017, 02:44 PM   #6
B. W.
Senior Member
 
B. W.'s Avatar
 
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 520
Re: Twilight Zone Neutral

Looking down the shifter hole you will see the top of all three shift forks. The reverse shift fork will have a spring loaded button on it (that the little bit of resistance you feel moving he shifter over into reverse) Using a large srewdriver, line the slots up on all three shift forks & put the shifter in. The very end of the shifter (the part that sits in the shift fork slots) is held in by a roll pin, it should have a little play but not a lot. If it does that could be your problem. Some people weld that to remove the slop.
B. W. is offline   Reply With Quote
Old 02-17-2017, 02:49 PM   #7
B. W.
Senior Member
 
B. W.'s Avatar
 
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 520
Re: Twilight Zone Neutral

I just saw your picture, you're in reverse right now. slide the reverse shift fork up in line with the other two then your ready to install the shifter. If you put the shifter in like it is right now you can't shift & it will be stuck in reverse.

Also, make sure the roll pins that retain the shifter cap are in tight & the slots on the shifter that the roll pins fit into are in good condition. On worn out towers I sometimes use a hose clamp to hold in the roll pins. Not a cure but a solution.
B. W. is offline   Reply With Quote
Old 02-17-2017, 03:20 PM   #8
dazza
Registered User
 
dazza's Avatar
 
Join Date: Aug 2002
Location: California
Posts: 933
Re: Twilight Zone Neutral

Thanks B.W., lined them up, popped in the shifter and all seems well. The lower roll pin is loose but I think it will be fine for the few miles I need to go to get to my shop so I can replace it.

Thanks again to both of you for the input!
__________________
---------------------------------------------------------
I'm not crazy, I'm chosen, there's a difference.
----------------------------
'72 K10 SWB, 350, sm465/np205
---- ----
dazza is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:27 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com