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Old 11-01-2010, 03:17 AM   #1
davidh
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3 speed manual problem

truck only has 54K on it. I got it running good and started driving it some. Im noticing that it often jumps out of first gear? 3 on the tree. This truck has hardly been worked, clutch grabs like a new car so its leading me to believe its linkage. If I hold it down in first gear it doesnt do this.
I dont get to work on it but every few weeks so I'd like to narrow down things to look at. thanks.
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Old 11-01-2010, 04:38 AM   #2
raycow
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Re: 3 speed manual problem

Certainly resolve any linkage issues first. If it still has the problem after that, you will have to go inside the box for a look. I suspect worn parts, especially if it jumps out of gear under load, rather than on deceleration.

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Old 11-01-2010, 09:29 AM   #3
davidh
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Re: 3 speed manual problem

I've looked at it briefly, linkage. Just think its odd this truck with this low of miles is having this issue. (originally purchased to haul golf clubs to country club)I have other trucks with 200K on them that don't do this.
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Old 11-01-2010, 11:12 AM   #4
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Re: 3 speed manual problem

http://67-72chevytrucks.com/vboard/s...d.php?t=215307
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Old 11-01-2010, 11:19 AM   #5
northerngmc
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Re: 3 speed manual problem

Quote:
Originally Posted by usmcchevy View Post
+1 go through this alignment and adjustment procedure first. I did this with my 69 GMC when I first had it and everything worked better!
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Old 11-01-2010, 12:41 PM   #6
davidh
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Re: 3 speed manual problem

I will have to do this next time Im there. I know these 3speeds are tough and with that few of miles my gut says linkage.
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Old 11-01-2010, 01:14 PM   #7
cdowns
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Re: 3 speed manual problem

b4 doing anything i'd spray all the linkage pivot points with WD40 real good to clean outdust grime and 40yo petrified grease then id spray the linkage real good with lubriplate grease to see if that helps the issue
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