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05-02-2014, 12:35 PM
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#1 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Clutch might have gone south of the border, truck shudders when shifting.
Alright, driving home last night the truck decides to take longer to gain speed as I'm going through my gears. It seems to want to shudder between 2nd, 3rd and 4th while shifting and take a slower time to gain my speed. I have an sm420 backed up to a 292 I6. Thinking either the throw out bearing is going out, pressure plate is acting up or old age is finally taking its toll on the old girl. Any suggestions on what is causing the problem? Much obliged for advice fellas.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-02-2014, 02:53 PM
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#2 |
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Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Double check the Z bar and make sure it is not backing out of the mount. Had that happen once. When it did, the Z bar wasn't throwing the linkage enough to full disengage the clutch.
I have also this shudder problem and it was the clutch and pressure plate going bad. Resurfaced the flywheel, new clutch and pressure plate and all was good again. Good luck.
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. 1965 C10 Panel,  Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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05-02-2014, 03:01 PM
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#3 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
By Z bar you mean the clutch linkage at the bell housing and on the frame correct? Also a slight squealing sound is present while driving so I'm also thinking throw out bearing is done 9 9 it's way out the door.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-02-2014, 06:19 PM
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#4 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Sounds odd. Shudders when you push the clutch in or when you let it out?
Does the squeal get louder with the clutch pushed in? When adjusted correctly the throwout bearing shouldn't touch the pressure plate and spin when the clutch is let out. Not sure why the acceleration would be sluggish. The clutch isn't slipping or something, is it? |
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05-02-2014, 07:00 PM
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#5 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Hard to say and no it shudders when I let out like I'm jockeying the clutch. Seal is small but noticeable and increases in pitch when I accelerate.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-02-2014, 08:06 PM
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#6 |
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Registered User
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
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Re: Clutch might have gone south of the border, truck shudders when shifting.
chatter could be oil on the disc also
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05-02-2014, 10:15 PM
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#7 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Huh. Sounds like something is certainly not happy! Like Richard said, an oily/greasy clutch will also chatter, but if it didn't do it when using the clutch before I wouldn't think that would be it.
If it was the throwout bearing squealing I'd really think it would get louder or at least the sound would change when you pushed the clutch in, though. Like I said, it shouldn't even be spinning at all with the clutch all the way out. (I adjust for something like an inch of pedal travel before it touches the pressure plate, which IIRC is what GM recommended.) |
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05-02-2014, 10:26 PM
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#8 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Yeah it does have some slop in the linkage so I'm gonna try to adjust it and hopefully get some where from there. If that doesn't fix it then I might as well replace the clutch. Probably the same one from the production of the truck. Lol.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-02-2014, 10:36 PM
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#9 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: Clutch might have gone south of the border, truck shudders when shifting.
The clutch is probably done, and from your description I'd say you might have also incurred some other damage as a result. The linkage is actually supposed to have some free play so you don't burn up the throwout bearing, so a little more slop isn't an issue. Unless the problem is just the clutch dragging/not disengaging all the way that's not the problem.
To check the linkage adjustment, just see how much you have to push the clutch pedal in before you feel the throwout bearing hit the pressure plate. You should feel an inch or so where only the clutch pedal return spring is holding the pedal up, then everything should go much more "solid" when it touches the pressure plate. If it doesn't work like it should when adjusted like that something is broken somewhere. |
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05-03-2014, 11:49 PM
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#10 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
And so begins the long process of disassembling and such. Yes I'm on my 2nd drink. It's fighting me so some liquid encouragement is needed to keep the push on. Lol.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-04-2014, 12:03 AM
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#11 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Just make sure the liquid encouragement doesn't lead to the production of "extra" parts!
 Why are you taking all that stuff out, though? I just pulled my SM420 out a couple times swapping stuff around. One time I lifted it up from the floor tunnel opening using a chain attached with a couple top cover bolts and set it in the cab using an engine hoist, and another time I did the same thing, but just set it down onto the ground with the hoist. Seems like a lot of extra work to pull both the engine and trans out. |
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05-04-2014, 12:05 AM
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#12 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Yes it does seem like a lot of extra work but I need to inspect the truck more thoroughly because this is a major overhaul since 64. This truck hasn't been really touched at all so I might as well be the guy to do it. Lol.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-04-2014, 12:08 AM
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#13 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Certainly not a bad idea. Are you going to replace the seals and all that while you're at it?
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05-04-2014, 12:17 AM
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#14 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Contemplating it. If I had the cash I'd give this thing a full rebuild. I do need a new exhaust manifold because mines on it's last leg. Also gonna clean the block up too, seen some original Detroit Diesel Green towards the bell housing under the years of grime. Lol
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-04-2014, 08:52 AM
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#15 |
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Registered User
Join Date: Dec 2011
Location: Donaldsonville, La.
Posts: 1,024
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Don't forget to change the rear seal while you have the trans off. Gonna look nice to freshen it up like that.
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05-05-2014, 12:28 AM
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#16 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Engine is out and the culprit is the clutch. Here's today's work for the truck.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-05-2014, 09:04 AM
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#17 |
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Registered User
Join Date: Aug 2011
Location: Montrose, CO
Posts: 972
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Uh oh, I can sense the dreaded "As long as I have this out, I might as well....." monster creeping up on you.
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05-05-2014, 09:41 AM
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#18 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Yeah seals and paint. Lol
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-05-2014, 11:06 AM
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#19 |
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Registered User
 
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
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Re: Clutch might have gone south of the border, truck shudders when shifting.
I am sensing the "May as well do this.." or "While its out I should do". lol That's why I'm afraid to pull mine out! LOL! Mine needs an overhaul...waaay more then seals an paint! LOL!
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
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05-05-2014, 12:20 PM
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#20 |
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Registered User
Join Date: Aug 2013
Location: Rochester Wa.
Posts: 395
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Dillon I have a stock exhaust manifold that is not cracked I think If you need to buy one just let me know.
__________________
64 C10 Fleetside LB 4 Sp/292 Build http://67-72chevytrucks.com/vboard/s...d.php?t=602438 70 GMC 1500 Fleetside LB 3OT/350 Build http://67-72chevytrucks.com/vboard/s...83#post6767983 76 GMC CCLB Dually Build http://67-72chevytrucks.com/vboard/s...d.php?t=691612 79 GMC 3500 Fleetside LB 454/400 90 Suburban Silverado 4x4 350/700R4 97 1500 Cheyenne Short Fleet 350/5sp |
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05-05-2014, 02:21 PM
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#21 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
I'd be glad to take it off your hands 64'. Need a new one like I said. Just pm me the info needed to pick it up.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-05-2014, 02:30 PM
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#22 | |
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Registered User
Join Date: Apr 2010
Location: Everett, WA
Posts: 504
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Quote:
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05-05-2014, 02:51 PM
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#23 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
Very true.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-07-2014, 11:51 AM
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#24 |
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Registered User
Join Date: Dec 2012
Location: Bangor, Michigan
Posts: 375
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Re: Clutch might have gone south of the border, truck shudders when shifting.
So So pulled the tin off the block late last night minus the timing chain cover because I didn't have a harmonic balancer puller. Sending them in today to be hot tanked and cleaned up and picking up the gaskets and seals today after work. Here's some more pics of it torn down.
__________________
That's the thing about a Chevrolet, no matter how they look, whether it be a trailer queen or a good ol' used farm truck, no other truck on the road will always look that damn good wearing a Bowtie. |
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05-07-2014, 12:19 PM
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#25 |
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Registered User
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
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Re: Clutch might have gone south of the border, truck shudders when shifting.
i hope while you are this far that you are going to roll a set of rods and mains in it also
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