Manual linkage install help

oldsmobile joe

Royal Smart Person
Nov 12, 2015
2,040
113
mpls
Sorry all I have is a Corvette assy. manual with this info.
Then why don't you use the one in post #13 of this thread.
 

Baker7888

Master Mechanic
Thread starter
Dec 3, 2021
374
28
Maine
Ok I am slowly moving forward. I had everything mocked up and seems to fit well. Going to drop transmission and seal up the bolts, and clean up the tunnel some. Moving the grease fitting on the z bar to the top as well so it will be accessible from up top.

Once I am reassembled (hopefully this long weekend) what is the clutch adjustment procedure? I see an adjustment at the clutch fork rod. Do I want a little bit of clearance like a lifter pushrod?
 

Baker7888

Master Mechanic
Thread starter
Dec 3, 2021
374
28
Maine
Guys I need some help again. Linkage is all installed. Added a grease fitting on the z bar as well. My clutch pedal is really high, like almost up against the dash. Why is it so high/how do I adjust it down??
 

Bonnewagon

Geezer
Sep 18, 2009
8,847
113
Queens, NY
You need to adjust the linkage so that there is about an inch of free play at the pedal. That means that you can push the pedal down about an inch before the throwout bearing touches the pressure plate fingers. You can feel it touch by wiggling the linkage back and forth, or look through the access port at the bottom of the bell housing if there is one, or the clutch fork hole. You do not want the TOB ever touching the pressure plate in the relaxed position or it will wear very fast. Adjust this at the lower push rod. I like to add a spring so that the pedal is pulled all the way back up. That makes all the linkage follow along and pulls the TOB away from the fingers. Remember, inches at the pedal equals millimeters at the TOB. The factory geometry is such that you get the inch of free play while also getting total clutch disengagement.
 
Last edited:

Baker7888

Master Mechanic
Thread starter
Dec 3, 2021
374
28
Maine
You need to adjust the linkage so that there is about an inch of free play at the pedal. That means that you can push the pedal down about an inch before the throwout bearing touches the pressure plate fingers. You can feel it touch by wiggling the linkage back and forth, or look through the access port at the bottom of the bell housing if there is one, or the clutch fork hole. You do not want the TOB ever touching the pressure plate in the relaxed position or it will wear very fast. Adjust this at the lower push rod. I like to add a spring so that the pedal is pulled all the way back up. That makes all the linkage follow along and pulls the TOB away from the fingers. Remember, inches at the pedal equals millimeters at the TOB. The factory geometry is such that you get the inch of free play while also getting total clutch disengagement.
Ok I will have to look when i get home. I want to say i may not be able to thread the linkage far enough in (shorten it up) to achieve the 1" of free play. When you say add a spring so the pedal is pushed all the way back up --- where are you mounting this spring?
 

ELCAM

G-Body Guru
Jun 19, 2021
710
93
Do you have the clutch pedal stop installed? It stops the travel at the top of the clutch pedal movement.

G clutch pedal stop.jpg
 
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Baker7888

Master Mechanic
Thread starter
Dec 3, 2021
374
28
Maine
Do you have the clutch pedal stop installed? It stops the travel at the top of the clutch pedal movement.

View attachment 202572
Oh good call, no i do not (kit did not come with one)

Right now where it rests, it takes full force to push it down (no free play at all) Then it is basically fully engaged when it is even with the brake pedal (wont go any farther down)
 

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pagrunt

Geezer
Sep 14, 2014
8,047
113
Elderton, Pa
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