Damn Clutch Quadrant

[Guest feralsprint]

Hello all my fellow Hood owners( or is that people owned by our hoods) any way as the title says I am having a little probelm with the clutch quadrant on the pedal, it has the yellow one on it and it was fine with the Sierra 1.6 and box but since fitting the 2 litre and matching box we are having a little problem, everytime we adjust the cable out so we can drive the car as soon as you bump the pedal the pressure on the pedal causes the quadrant to let go as there is no free play in the cable at all when its adjusted to work.

 

Now out here in Australia we don;t have a lot of Sierra or later model capri's or the like and I know that over there you can get larger radius quadrants to fit, do any of you good people know if any of these larger quads were fitted to mk2 escorts or type 4 cortina or the like, if not would one of you good people have one you could send us out here, we can send you some beer tokens vis PAYPAL if you have an account, anyhows I hope to hear from you good people soon

 

Jon

[Longboarder]

G'day mate. I've got one sitting in a drawer in front of me. It's the one that pulls extra cable, plus the ratchet and spring. Yours for the cost of the postage. I don't need it since switching to floor mounted pedals. PM me your address and I will put it in the post.

 

Nigel

 

Incidentaly a lot of clutch problems are caused by the tag on the pedal box which is supposed to lift the clutch quadrant ratchet, freeing the quadrant, when you take your foot off the pedal. Should press on the ratchet where I have drawn the arrow. As soon as the pedal and qaudrant move it lifts off this tag engaging the ratchet in the quadrant and allowing it to pull cable. If it's working right you should be able to pull the quadrant round just by pulling the cable in the engine bay.

[Longboarder]

This is the ratchet which is the critical bit in automatic adjusting of the cable. The pedal housing has a tag that lifts it out of engagement with the quadrant when your foot is off the pedal, freeing the quadrant which is then only under quadrant spring tension to keep the cable mildly tensioned. There is thus no free play in the cable. Sounds like you also have an adjustable cable and are trying to use both systems together.

 

Nigel

[Guest Tony Tank]

Hello Jon go to this lnik it explains the differant ones.

http://nw.rhocar.org/clutch%20pawls.htm

Regards Tank

[Guest AWhite]

Sorry to highjack the thread. But how do you change the clutch pedal height. My clutch pedal is much higher than the brake pedal and still is after i have changed the cable to the longer cosworth cable. You almost need a double jointed foot to press it.

 

Thanks,

 

Andy

[Guest timswait]

Personally I never quite got the automatic adjuster to work right..

As Nigel says the tag is meant to release the quadrant when the pedal's up. I cut the tag off so the quadrant don't automatically release, so now I can adjust it with a screwdriver to release the quadrant, and get a bit of tension in the cable even when the pedal's up.

Manual adjustment seems to be fine, I've hardly ever needed to do it (in fact I can't remember when I last did....)

[Guest feralsprint]

Thanks people for the great info, as usual this club and the site are the best

 

Longboarder I have PMd you, thanks mate I will take yopu up on your offer

 

Jon

[Guest salty_monk]

You can also put a plate over the top of your existing quadrant.

 

Chris Brown has some pictures of it done this way. I did this as I needed "extra pull" over & above what the biggest (55mm) Quadrant would offer....

 

Andy, I extended the tag on the pedal box with a piece of ally plate bolted to the tag, stop the clutch pedal coming up so high (basically releases the ratchet earlier). Works fine but you will need a bigger quadrant & you will have to play with it to get it right.

 

Dan

[Longboarder]

To get it to work the important bits are using the spacers on the shaft to make sure the clutch pedal and thus the quadrant and ratchet are lined up with the tag.

 

Nigel

[Longboarder]

You may need to adjust the tag to hit the ratchet square on and just behind the lip.

This pic shows the ratchet just lifted out of engagement with the teeth on the quadrant so the quadrant is free to rotate to take up the slack. As soon as the pedal is pressed it lifts the ratchet off the tag which engages it in the teeth of the quadrant and thus couples the quadrant to the action of the pedal.

 

Nigel

[Big Jim]

Sorry to highjack the thread. But how do you change the clutch pedal height. My clutch pedal is much higher than the brake pedal and still is after i have changed the cable to the longer cosworth cable. You almost need a double jointed foot to press it.

To answer Andy's problem, the tag that releases the rachet out of the quadrant, also governs the height of the clutch pedal. Now you could have a wrong quadrant fitted, it should look like the one in Nigels photo (whatever colour!) if not, it's incorrect.

The only way to them bring the pedal downwards, it either make a new tag (or cut the orignal one off & reweld it back on) ans site it slightly lower, Or alternatively cut the pedal shaft with a very small "V" and bend it backwards slightly. Be very carefull what you do, or you'll loose the pedal travel that we all crave for by fitting the different quadrants in the first place.

[Guest docter fox]

I've just fitted the 55mm one, made the clutch a lot higher up (was almost at the floor) and feel a lot better than the original one, I had to use a few spacers but definately worth the change IMO