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05-16-2017, 11:40 PM | #1 |
Restoring it $200 at a time...
Join Date: Aug 2008
Location: NE Kansas
Posts: 886
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Clutch will be replaced, what actually failed?
It was bound to happen sometime. I've had this truck for going on 25 years and have never touched the clutch. Over the last few weeks, the pedal had gotten to where it didn't want to return. A good stab would normally bring it back up. Now it's gotten to where the pedal won't return unless you put your toe under it and let it snap back. The actual engagement still feels OK, just the pedal operation.
Did the throwout bearing finally fail? I would think that if the clutch fingers were weak, I'd feel slippage. The pedal and z-bar springslook OK. Any thoughts?
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Charter member of the 'Put the dimmer switch back on the damn floor where it belongs' Society '68 5.3L-4 speed LWB C20; grandpa bought it for the farm in '71. Now LS 5.3, rather than 327. DD '09 Pilot Weekender '65 Skylark 300-4V-4 speed Wife's '07 Lexus ES350; 117 actuator motors and I can't see the engine. Son's '04 F250 SuperCab 6.0 |
05-17-2017, 12:38 AM | #2 |
Registered User
Join Date: Mar 2016
Location: Long Island NY
Posts: 598
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Re: Clutch will be replaced, what actually failed?
If the throwout bearing failed that would mean it would no longer spin on the clutch finger side. So when the clutch side contacted the fingers on the pressure plate there would be metal on metal grinding. A more likely throwout bearing issue that could explain your issue is the throwout bearing not sliding easily. I forget what the surface the throwout bearing rides on is called but that could be gummed up, rusty and no longer smooth for the throwout bearing to slide on. Since you say engagement is fine I'd say this is the most likely issue.
But I wouldn't totally rule out a problem with the pressure plate either. |
05-17-2017, 06:13 AM | #3 |
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Join Date: Oct 2013
Location: Maine
Posts: 2,332
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Re: Clutch will be replaced, what actually failed?
You would think the spring would be enough to pull it back. Maybe it needs grease in the Z bar.
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
05-17-2017, 08:24 AM | #4 |
Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Clutch will be replaced, what actually failed?
First, try to disengage the clutch linkage from the fork and manually move the pedal up and down. If it moves freely than the most likely problem is the input shaft bearing retainer needs lubricating or has wear grooves.
If you have to remove the transmission, may as well go all the way and replace worn or old parts like clutch disc, pressure plate and throwout bearing.
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
05-17-2017, 02:21 PM | #5 |
Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,529
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Re: Clutch will be replaced, what actually failed?
week return spring on the linkage.grease the movable joints.
I had a truck that sat for a long time and the clutch disc stuck to the flyywheel. Got stiff after that untill it was replaced |
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