Clutch Quadrent,

[Guest Alan_builder]

Hi all,

 

Looking for a bright spark!

 

Just had the 4th set of teeth let go! So no clutch.

 

Ok Henry Ford used this design for a year or two, rather a decade or three. So the basic design MUST be Ok? (Its so easy to reinvent the wheel or quadrant in this case).

 

Originally the quadrant was yellow, now it's a black one. The first black one had a weak looking spring and badly formed. The second one has a spring like the original. There is no play (un-necessary) in the bearings as they have been replaced. Its a standard 2L clutch and pressure plate. The cable runs smooth (not been over heated).

 

So what's wrong?

 

 

I think I will do a conversion on this part to stop it ever happening again.

 

I used to my

[chris n]

Alan, a couple of photos of what I was telling you about my set up at the meeting today

[Grim]

and what were you telling him?

[Guest gdc]

hi i was never a fan of the auto adjuster , if poss can you not do away with the auto adjuster and fit a manual adjuster on the bellhousing . its not a thing that needs playing with on a regular basis .capri cable lends it self to be used .but you will have to sort out an anchor for the outer at the peddle end .

 

graham

[fry61]

Would it be possible/easier to use a handbrake cable & adjuster?

[Longboarder]

Dont use a handbrake cable. Not strong enough nor built to withstand the constant use. A good adjustable cable is Mk2 Escort.

 

Nigel

[Guest Alan_builder]

and what were you telling him?

 

Chris was saying to use the clutch cable from a Mk 4 Cortina.

 

Having taken the contraption all out of the car and the quadrant out of the peddle, my son and I conclude the mounting holes for the quadrant and dog are too far apart. The nose (front of first tooth) of the dog seems to have pushed on only one tooth on the quadrant. Yes it servoed in but too much for one tooth the take all the force.

 

Will take a picture and add later.

 

Really I do my

[Guest Alan_builder]

Chris was saying to use the clutch cable from a Mk 4 Cortina.

 

Having taken the contraption all out of the car and the quadrant out of the peddle, my son and I conclude the mounting holes for the quadrant and dog are too far apart. The nose (front of first tooth) of the dog seems to have pushed on only one tooth on the quadrant. Yes it servoed in but too much for one tooth the take all the force.

 

Will take a picture and add later.

 

Really I do my

 

Had a look at a Cortina cable, not sure how to fit a return spring.

 

Came to the conclusion the problem must be the lack of a pedal stop and thus just breaking the teeth.

 

I my

[Grim]

so does the mk4 cortina cable just fit straight in, and take the slack out of the auto adjuster, or will some of the mechanism on the pedal need removing?

[Peter Bell]

Mk iv cortina is almost a straight replacement, you need a shorter spacer at the pedal box end, the outer is a bit longer or the inner is a bit shorter than the normal Sierra one.

[ibrooks]

Just to take a bit of a different approach...... It would be easier if you could get the original working properly. Ford used it for a good long while without such major problems so there isn't really anything inherently wrong with the system - Sierras regularly clocked well in excess of 100k miles with this system fitted and Transits tend to cover galactic mileages.

 

I suspect the root of your problem might be in your first post - "the original quadrant was yellow and now it's black". Ford used red/yellow and maybe others so signify the diameter of the base circle. The bigger the circle the longer the pull for a given pedal movement.

 

Black tends to signify a pattern part to me. Now I've nothing against pattern parts as a concept but the problem is that there is some real rubbish floating around out there that is cheap in ways far deeper than just the price. From your description of the failure I'm wondering if the diameter of the quadrant has been too small and that's why the pawl didn't engage properly? Normally that diameter wouldn't change but if it saved half a pence in plastic for some manufacturer to make the quadrant smaller and the pawl bigger but you've used a quadrant from one set and a pawl for another (or they've been mixed up before you even got them - or even the brand you've been buying is plain rubbish).

 

Having said that Ford used the system for a long time they did seem to fit a modified version on the MkV Escort (or whatever the N-reg ones were). Now this might just have been a diesel thing as that's what I've messed with - the quadrant was un-changed but the pedal had a threaded insert through it below the pivot at an upwards angle and a long bolt which went through it and bore against the underside of the rear of the quadrant. Screwing the bolt in further pushed the quadrant around and took up the slack in the cable so no more reliance on the teeth to do anything.

 

Quick search of google images turned this up.

 

http://img22.imageshack.us/i/pedalhole.jpg/

 

Iain

[Guest chris brown]

Alan if you change the quadrant size (colour) then you must change the toothed dog also as they are matched for size if I remember correctly

[Guest doddy]

i have a complete pedal box with a yellow adjuster if you want it seems in good condition

[Guest Alan_builder]

Hi Chris / Ian,

 

I have not been a silly boy and mixed dog and quadrant. The quadrant is 52mm. It is a pattern piece from the Auto factors and they get the failures back. The first black one to fail had a flimsy looking spring on the dog as its return spring.

 

The original Ford quadrant was a yellow one from a Sierra 1.8 CVH. in trooth it never worked well, clutch drag. I think the dog slipped much of the time as Tim loaded the clutch cable into it without lifting the pedel.

 

I have an RS2000 sump and that has gets in the way of the clutch cable mounting hole on the type 9 gearbox., but they do provide another but of course it it out of line a little.

 

As I said up top ford have made just the one or 2 over many decades.

 

The outside diameter

[Guest Alan_builder]

Hi Chris / Ian,

 

I have not been a silly boy and mixed dog and quadrant. The quadrant is 52mm. It is a pattern piece from the Auto factors and they get the failures back. The first black one to fail had a flimsy looking spring on the dog as its return spring.

 

The original Ford quadrant was a yellow one from a Sierra 1.8 CVH. in trooth it never worked well, clutch drag. I think the dog slipped much of the time as Tim loaded the clutch cable into it without lifting the pedel.

 

I have an RS2000 sump and that gets in the way of the clutch cable mounting hole on the type 9 gearbox, but they do provide another but of course, it it out of line a little.

 

As I said up top Ford have made just the one or 2 over many decades.

 

The outside diameter of the quadrants look the same as does the profile of the dog, the only difference is the journal size for the cable.

 

Examining the Quadrants and the dog, leads me & Tum to believe the axle for the dog and Quadrant may to too far apart or I have over pushed the clutch pedal when the pressure plate has come to the end of its movement.

 

I have made a new location in the quadrant for the clutch cable so I will use an undamaged portion and made a micro remote adjuster for the dog release when clutch pedal is released. It is now adjusted such that the clutch operates just prior to the floor acting as a stop for the pedal, thus no over pressure can be exerted.

 

Just can't see why the Ford bit fails on my car! I seem to remember the clutch going down forever after the release point on the Cortina.

 

I do so like my I it even the problems.