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By alanfreeman - 11 Years Ago
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I am having a problem with the clutch pedal return on my newly restored '54 Mercury. I adjusted the pedal free play to slightly over the first 1" of pedal travel as specified in the shop manual. However, the pedal when so adjusted will not fully return to the same elevation as the brake pedal next to it. If I pull up on the clutch pedal with my hand, I can bring it up to the same level as the brake pedal but when I let go the clutch goes down the 1" and the pedal travel starts at that point. . I checked all of the parts on the diagram in the Shop Manual to make sure I did not omit a return spring but the only return spring I see is one next to the adjustable rod next to the bell housing and that one is there. I know that there is another spring under the dash which connects to the upper clutch pedal but I think that this spring is designed to ease the amount of pedal pressure necessary to push the pedal to the floor and has nothing to do with making the pedal fully return. Anybody got any ideas as to what the problem is? Thanks, Alan S. Freeman
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By steinauge - 11 Years Ago
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When you pull the pedal up look and see if the clutch release rod is pulled away from the throwout fork.If so adjust.Alternately you could just mount a spring under the dash to return the pedal?
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By Hoosier Hurricane - 11 Years Ago
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If I recall correctly, the under dash spring goes over center at the top of the travel so that it pulls the pedal up at the top of the stroke, then as you push the pedal down it assists you in disengaging the clutch.
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By oldcarmark - 11 Years Ago
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My buddy with a 55 Ford has had problems over the years with chattering in the clutch.Discovered this week that the overcentre return spring on the pedal under the dash was missing.Put one in and the clutch has never worked better.I would assume that the clutch was not releasing completely previously.
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By alanfreeman - 11 Years Ago
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The first inch of free pedal play does not move the rod at all which I think is the way it is supposed to work. Alan
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By Jimz Bird - 11 Years Ago
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Alan,
I ran across this in the Thunderbird Restoration Manual a coupe of weeks ago and may apply to your problem also."Pgs 252-3 Photos 17&18.
Photo 17- The clutch release equalizer ball stud should have a thick rubber washer and the half round bronze bushings to function properly.
Photo 18- Shown are the rubber washer and bronze bushings in place. They slide into the release equalizer bracket that bolts to the engine. In most cases if the bronze bushings are missing the clutch pedal will not return fully."
Attached are not the photos but a capture from the illustrated parts breakdown Pg 218.
They would be the two piece brass bushing # 7517 and the rubber washer # 7539.
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By 2721955meteor - 11 Years Ago
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my 57 ranchero has a return spring frome the clutch release arm to the frame,sounds like yours is missing,i also have overcentre spring under dash
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By alanfreeman - 11 Years Ago
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My setup has both springs but the one down below next to the adjustable rod seems to be a rather lightweight spring although it was the one which came with the car and the clutch worked well before I disassembled the car for restoration. Am I correct that there is not supposed to be any movement of the adjustable rod during the first 1" of free pedal play? Thanks
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By 2721955meteor - 11 Years Ago
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I adjust the free play so ther is 1in free play after the lower spring is cmpresed and throw out is engaging. other wise you have to much fee play. the lower spring is designed so throw out bearing is not turning till the pedal moved 1in. as the clutch wears the 1in will decrease,requiring adjusting the rod to real ease lever so the 1in comes back
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By alanfreeman - 11 Years Ago
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Question....which spring or springs cause the clutch pedal to return to the same level as the brake pedal? It looks to me like the pedal return results from the springs on the pressure plate and/or the clutch disc. The rather lightweight spring next to the adjustable rod looks like its purpose is to make sure that the rod remains in contact with the clutch fork at all times. The spring on the pedal assembly under the dash looks like it is designed to make depressing the pedal easier for the driver. Anyone know the answer to this? Thanks, Alan
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By PWH42 - 11 Years Ago
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The light spring is to keep the actuating rod from rattling and falling out of the clutch arm.The heavy spring under the dash is designed to go over center.At the top it holds the pedal against the upper stop.Halfway down it helps to disengage the clutch. .
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By alanfreeman - 11 Years Ago
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PWH42..... The link or rod attached to the large spring on the pedal under the dash has fine threads and about 2" of length adjustment. I have adjusted the length of the link from one end of the threads to the other and in every position the pedal is being pushed downwards instead of returning to the uppermost position equal to the level of the brake pedal. I installed the large spring and the two pieces of the link just as shown in the diagram in the shop manual. Alan
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By slumlord444 - 11 Years Ago
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I have never seen that rubber bushing. Need to see if I can locate one somewhere.
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