AC Owners Club Forum

AC Owners Club Forum => Mk IV, Superblower, CRS and other Continuation Cars Forum => Topic started by: jmohara on August 26, 2019, 23:05:26

Title: Clutch Quadrant Replacement
Post by: jmohara on August 26, 2019, 23:05:26
I am going to embark on this as its making some odd noises down there!

I know there are threads on this, but some of the links have expired.

I am looking for any detailed instructions to do this on our cars - it's a tight space! Do you need to remove the pedal box to do it right?

Any help much appreciated!!!!

Michael
Title: Re: Clutch Quadrant Replacement
Post by: 1985 CCX on August 27, 2019, 18:28:35
I assume this is a master or slave change?
Only have performed this on a std 289 car.  Usually held in place and easily changed out.  Add pictures as it helps us help you.....
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 27, 2019, 21:03:17
Plastic quadrant on the clutch pedal. A lot of people change it for a steel replacement....

There were threads on how to do it but they are dead links now.
Title: Re: Clutch Quadrant Replacement
Post by: westcott on August 29, 2019, 10:38:02
Hi Michael,

you can do it in the car but the easiest is to remove the pedal box.

The pedal box is held in front of the car by 2 nuts to the bolts of the brake booster and on top by to other nuts.

Remove the nuts and You can remove the pedal box but before:
- removed the clip from the brake booster rod visible on the brake pedal from the rear
- disconnect the nutral safety switch and brake light switch

If I remember correctly the quadrant is from a period Sierra and is color coded, ours shoud be white.

Unfortunatelly I lost all my notes on spare part #s because of pad malfunction and had no backup....

An example of a complete repair kit is here:
https://picclick.de/Ford-SIERRA-MK1-MK2-Kupplung-Pedal-Nachsteller-RS-112581082944.html#&gid=1&pid=1

Don't click on details, the offer is not longer available, just take it as generic pics for the parts you normally need to repair the clutch pedal adjustment.

I will check my parts bin this evening for part numbers if nobody else is responding in between.
 

 
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 29, 2019, 18:15:56
Hi Uwe,
As usual you are a legend.
My brake lights are activated by a switch on the brake lines and I dont have a neutral safety switch so all good.
I am going to use an aluminum replacement - and just manually adjust.
Did you have to take the steering column out or did you work around it?
M
Title: Re: Clutch Quadrant Replacement
Post by: westcott on August 29, 2019, 19:29:40
The pedal box is left from the column and goes out with the column in place.

In the 80s Ford sold racing clutch pedals with quadrant adjustment by a set screw so the manual  adjustment is a common improovement.

The aluminum quadrants sold in the US for the mustang will not fit,  the diameter/radius is too big.

The radius must be 50mm to work in the assembly.

Here you see the tech specs and Ford part #:
http://www.fordopedia.org/parts-catalog/sierra-mk1/D2.10

The numbers are: 83BB-7L583AA and G82520 on the quadrant
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 29, 2019, 22:27:10
Awesome info thanks!
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 29, 2019, 23:24:32
There must be a 50mm alloy one out there somewhere! Anyone?
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on August 30, 2019, 11:35:29
This could be a project to make some 50mm ones if no ready made alternatives surface.

I have not been a victim of the plastic quadrant thru breakage but got caught out by the automatic adjustment so would prefer manual, though I now know all about resetting the quadrant after fitting a new clutch cable.
Graham
Title: Re: Clutch Quadrant Replacement
Post by: Kevin C on August 30, 2019, 12:55:32
Touch wood I have never had to replace mine, so have no personal experience to share, but it may be worth chatting to:

http://randbmotorsport.co.uk/shop/Details.asp?ProductID=386
+
https://shop.grahamgoode.com/clutch-cables--quadrants-21548-c.asp
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on August 30, 2019, 17:13:08
Kevin,
Thas useful info and I have dropped R&B an email.
The issue may be that an adjustable clutch cable will need to be made up also.
Graham
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 30, 2019, 18:47:47
Not cheap!
Title: Re: Clutch Quadrant Replacement
Post by: westcott on August 30, 2019, 20:57:14
Maybe anembo will give some dimensional details for their product

https://www.ebay.com/itm/Ford-RS-Turbo-Knuppel-Aluminium-Hoher-Bewertete-Kupplung-Quadrant/121749922344?hash=item1c58dc6228:g:ZaAAAOSwP~tW4c80

Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on August 30, 2019, 21:03:08
That’s hilarious as same seller in UK charging £150 plus shipping
https://www.ebay.co.uk/itm/Ford-RS-Turbo-Billet-Aluminium-Uprated-Clutch-Quadrant/123635719689?hash=item1cc9435e09:g:qpgAAOSwt5dcXY~g
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 31, 2019, 21:56:03
Hauled the peddle box out and for sure the quadrant is stripped. New plastic one ordered.

Uwe - where on the adjusted did you set it on install?

M
Title: Re: Clutch Quadrant Replacement
Post by: westcott on September 01, 2019, 15:17:06
That’s hilarious as same seller in UK charging £150 plus shipping
https://www.ebay.co.uk/itm/Ford-RS-Turbo-Billet-Aluminium-Uprated-Clutch-Quadrant/123635719689?hash=item1cc9435e09:g:qpgAAOSwt5dcXY~g

Graham, the more expensive one is for use with reinforced upgraded racing clutches, the cheaper one for standard clutches.
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on September 02, 2019, 12:11:47
I did check with Anembo - will not work with our pedal box.
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on September 04, 2019, 15:19:41
From one of the old threads (Search quadrant) the ford part number for a 50mm plastic one is (UK RHD CRS at least) 6183029

Graham
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on September 04, 2019, 18:40:04
Re adjusting -its an automatic adjustment which  you activate/set to correct position  by putting your foot under the clutch pedal (once cable  is installed  etc) and pulling up on the pedal with your foot. This adjusts the mechanism/ratchet pawl  and cable to the correct position.

What ever you do , dont start the engine till clutch cable has  been adjusted properly  and has a bit of slack.
Graham
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on September 04, 2019, 22:36:54
Thanks - I bought the plastic replacement. I still would prefer an alluminium one, but that can wait for the winter.....
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on September 08, 2019, 02:05:45
Just to close it off, I found these instructions useful for resetting the self adjusting mechanism.

Insert the cable through the hole in the bell housing and through the hole in the clutch release lever. Slide the ball on the end of the cable assembly away from the hole in the clutch release lever.

Install the clip retainer that holds the cable assembly to the bell housing.

Push the cable assembly into the hole in the dash panel and secure the isolator with a screw.

Install the cable assembly by lifting the clutch pedal to disengage the pawl and quadrant. Then, pushing the quadrant forward, hook the end of the cable over the rear of the quadrant.

Depress the clutch cable several times to adjust the cable.
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on September 08, 2019, 21:41:43
Good find- that sounds a sensible & correct way of fitting and adjusting the cable/quadrant.

I started the opposite way round (in the pedal box)  hence had tension in cable at clutch arm.

Graham
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on September 08, 2019, 22:44:06
I am still desperate for a nice alloy one that gets rid of the adjuster if anyone comes across one! That or I may be making one this winter  :)
Title: Re: Clutch Quadrant Replacement
Post by: westcott on September 10, 2019, 12:07:46
The plastic quadrant itself is not the big problem. It is the ratchet mechanism which will breake and strip the teath.

The racing pedals have a manual adjustment screw which makes the quadrant itself more reliable over the time used.

That could be implemented into our basic pedal (which is cutted and welded to a MK IV shape) by drilling a hole and welding some nut inside.

But then you need to adjust the tension and position of your pedal manually on a regular base.

I will post some pics for that simple fix without going to aluminum quadrant.

Update:

This is a real OEM part for harder treatment, the so called racing or motorsports pedal.

It is just a allen head screw going through the pedal and adjusting the quadrant mechanically.

The welded nut inside the pedal is self locking and completely metal, so the adjustment is simple and straight forward by turning the screw in or out,
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on May 13, 2020, 02:33:25
OK new approach. Its for a Mercury, but the Quadrant is the same and I think this will work well.
Will publish photos if when I get it together.
M
Title: Re: Clutch Quadrant Replacement
Post by: westcott on May 16, 2020, 14:50:46
Michael,

the diameter or distance from center to cable surface on quadrant MUST be the same at the point where the cable is hooked to it.

If the Mercury part has a bigger diameter the cable will be bended up directly after the footbox to follow the bigger diameter quadrant.
That will cause friction and bending of the cable every time you push the pedal resulting in early cable damage.

I think it is even not possible to mount  the pedal to the pedal box with a much bigger diameter quadrant.
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on May 16, 2020, 22:21:12
Hi Uwe,
The diameter is slightly bigger. I made a small modification to the footbox to allow it to clear the frame in that area.
After fitting I watched the action very carefully - the cable runs cleanly through the firewall to the engine bay. There is no snagging or bending.
And the good news is that the clutch action is now so nice. Amazing difference.
Attached is a picture of the pedals before refitting.
Adjustment is so easy now!
Michael
Title: Re: Clutch Quadrant Replacement
Post by: westcott on May 17, 2020, 22:34:14
Hi Michael,

well done, finally you found an other replacement part, working for our cars ! 👍👍

Uwe

Title: Re: Clutch Quadrant Replacement
Post by: jmohara on May 18, 2020, 01:39:54
Thanks Uwe - the clutch quadrant was driving me nuts - it never felt good with the uprated clutch I have in the car. I don't have much room to put a hydraulic unit in - so this makes me really happy. I drove it today and it feels really good.
Step by step.....
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on May 28, 2020, 22:14:13
Michael,
I was thinking about why the clutch action is now "so nice"-perhaps the small change in diameter increases the mechanical advantage enough over the standard quadrant to make a difference, but the spring force in the clutch  is not huge---I have a mcleod clutch in my uprated(Stroked)  CRS and I tested it in my 10 ton press and could hardly measure the force--I also asked mcleod what the force was in lbs but they never replied.

I would be keen to try one of these new quadrants you fitted but can find it on internet --can you plese PM me or link it here for others as well.

Regards,
Graham
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on May 29, 2020, 01:25:26
Hi Graham,
I saw an article about this stating that there is definitely some slack and flex in the adjustable plastic quadrant, but who knows. I just know I am happy with this! And I never felt great with the plastic system.
The guy who makes them is in Alabama and has about 5 left. He doesn't have it online anymore so I will drop you a note.
If anyone else is interested let me know.
M
Title: Re: Clutch Quadrant Replacement
Post by: Flyinghorse on August 14, 2020, 09:35:38
I was informed that a small batch of these are currently available in the UK:

http://www.randbmotorsport.co.uk/shop/Details.asp?ProductID=386

I recently got 2 from the states at a comparable price.
If you are running an uprated clutch these make a difference over the plastic quadrant and are also manually adjustable.
Regards,
Graham
Title: Re: Clutch Quadrant Replacement
Post by: jmohara on August 14, 2020, 17:20:39
I did try these guys and they did not have any - maybe they got some new ones in from the most recent build.
M