AC Owners Club Forum
AC Owners Club Forum => Mk IV, Superblower, CRS and other Continuation Cars Forum => Topic started by: C9OBY on June 01, 2011, 07:59:54
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Hi,
Does anyone have experience repairing their MKIV pedal box, or finding a replacement clutch pedal quadrant (item 7 in the diagram below)? I've included some pictures of similar units below, but have not yet managed to find the exact part for my car yet.
Unfortunately, the plastic quadrant has broken at the 'hinge'/eye, but overall it appears to be a significant weak point in the overall clutch pedal assembly design. I need to either find a replacement quadrant, or replace the entire pedal box, however I'm assuming that a new pedal box will require a change to the clutch, brake and throttle cable positions etc.
Any advice would be appreciated.
Thanks,
Bruce
(http://i139.photobucket.com/albums/q311/c9oby/AK1222/ford-scorpio-clutch-gear-repair-manuals.jpg)
(http://i139.photobucket.com/albums/q311/c9oby/AK1222/quad006.jpg)
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Hi Bruce, my MkIV met with the same issue, the quadrant is a known fault and the spring often breaks stopping the pawl from being engaged onto the quadrant teeth. I trawled the 'Net and found the following page and concept that I then went on to manufacture and fit to my car, working off the photos. It works very well and is a fit and forget modification that allows manual adjustment of the clutch cable: http://www.key-ideas.com/DG_ClutchAdjuster.htm
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Hi Steve,
Thanks for your advice & link, I'm definitily going to attempt the same thing on mine. Are you able to send me any drawing with dimensions etc of your design that I could copy?
Thanks
Bruce
PS: I've just managed to find a replacement quadrant from a local Ford parts dealer which I'll collect on Saturday.
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I will check at work tommorow,I can't recall what I have or kept. I actually replaced the entire quadrant by water jet cutting a new one from Ali plate, then machining the bores and outer groove. It took a while but the end result is very good and worth the effort.
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Wow, that is exactly what I've spend the last day looking for - a metal one. I am planning to send my new plastic one down to a local metal-shop and see if they can fabricate one for me. If only I had my own water jet cutter...!
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The pedal box out, and offending parts removed. The quadrant is Ford part number 83BB 7L583 AA.
(http://i139.photobucket.com/albums/q311/c9oby/AK1222/IMG_2690.jpg)
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More parts pictures : http://www.merkurtech.com/merkurtech/includes/imgviewer.php?merkurtech/picturepages/images/clutchadj002.jpg and : http://www.merkurtech.com/merkurtech/includes/imgviewer.php?merkurtech/picturepages/images/clutchadj001.jpg and :
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83BB 7L583 AA. Is an "Engineering" number, not a "part" number.
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Parts avilable from multiple speed shops with better cables as well
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This part looks to be the exact part used on a the fox body mustangs ... of which they had the same problem with it breaking ... I do know they were replaced with aftermarket aluminum style ... Ford might have the exact replacement available ... or possibly someone like Jegs, Summit, NPD etc.
Ron
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quote:
Originally posted by ak1234
This part looks to be the exact part used on a the fox body mustangs ... of which they had the same problem with it breaking ... I do know they were replaced with aftermarket aluminum style ... Ford might have the exact replacement available ... or possibly someone like Jegs, Summit, NPD etc.
Ron
I was also thinking this. If anyone is interested, I have an NOS one for the Foxbody mustang somewhere in the garage that I bought for my '86 SVO and never used. I would have to dig it out and check to see if it matches the pics above to be sure of a match. However, Ron is right about someone making a metal replacement for the Fox body quadrants and if they are the same, that would probably be a better replacement for a daily driver.
Jay
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get the replacement from a spped shop and replace cable at same time. New cables have more adjustment and much superior heat shielding...been there done this!!
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quote:
Originally posted by jbottini
get the replacement from a spped shop and replace cable at same time. New cables have more adjustment and much superior heat shielding...been there done this!!
Jim,
You wouldn't happen to have any brand & part number info?
Art
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FYI - for a right hand drive car you will need a longer cable. Thunder Road in Surrey have heavy duty versions made by Speedy Cables. Trust me, it's well worth having spare clutch and throttle cables in the boot!
Some years ago I had the clutch cable fail while driving round Parliament Square in the rush-hour and subsequently having to drive the car to a quieter place by using second gear and the ignition key was no fun at all. The security police weren’t too impressed with my “stop-start” driving style either.
John.
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ANF, I'look at home, I think i have mfg and PN. Cobham good catch...but if made in M.O.England ..it should be RHD correct anyway...I thought "our betters" had speed shops?!
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The extended clutch cable for right-hand drive is not an "off the shelf" item, so if the cable breaks and you don't have a spare, you're off the road 'till Speedy cables can make it. It's also worth noting that if the cable breaks and is replaced - keep the fittings because they're the bits that are hard to replace. If you keep the bits of plastic it will be much easier to get the next cable made.
Cheers - John.
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As an FYI, I pulled out my NOS quadrant from my 86 Fox body mustang and while the quadrant is mounted differently, it looks like it is the same piece as is shown in the first pic. Jim can probably confirm the P/N but I am guessing the quadrant will be from a Fox body mustang application.
Jay
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quote:
Originally posted by aex125
As an FYI, I pulled out my NOS quadrant from my 86 Fox body mustang and while the quadrant is mounted differently, it looks like it is the same piece as is shown in the first pic. Jim can probably confirm the P/N but I am guessing the quadrant will be from a Fox body mustang application.
Jay
Jay, I managed to get a direct replacement from a local Ford dealer. It is part number 6183029 and was used on the Granada and Sierra, amongst others. It's quite likely that it was also used on a number of other cars.
(http://i139.photobucket.com/albums/q311/c9oby/AK1222/quadrant.jpg)
The direct replacement for the white one that I took off the car (based on it's engineering number 83BB 7L583 AA) is almost identical, but now has a slightly lower radius (45mm), hence after trialing which one had the best gear engagement catch-point, I ended up using the black one which has a slightly higher radius (50mm) than my original one.
I'm now in the process of having a part machined for me, including an adjustor as shown by Steve. Thankfully