XJ6 & XJ12 Series I, II & III 1968-1992

Parking Brake

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Old 04-17-2020, 10:11 AM
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Default Parking Brake

Hi , could someone explain the e brake cable routing ? All pictures I've seen on the net shows cable running from the left to the right . I just received the set-up for my inward e-brakes from David ,who was most helpful in identifying my Jag rear end.The cable routing shows On the left side it would work but the right side,the lever must be pulled outward to function . Am I missing something ? This Jag rr is in my replica cobra . I've got a lot of pictures saved on how to put on the e brakes , but am questioning how the cables function . I'm almost going in blind here as I've never did any work on a Jaguar . Thank You , Bob
 
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Old 04-17-2020, 11:51 AM
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Bob,

Here's a couple of pictures of my 1985 XJ6 rear end showing the e-brake levers normal operation is to be pulled towards each other. E-brake cable housing anchored in left lever and e-brake cable itself anchored in right lever.

Others will weigh in of this, I'm sure.

Dave


 
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Old 04-17-2020, 12:16 PM
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Maybe I don't have the right stuff ? Pictures of what I have , must pull each lever outward to bring in brake pads , unless I'm wrong ,I've made a sketch as well as something I can make work .Your picture doesn't show any cables at all . Thanks , Bob



 
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Old 04-17-2020, 12:31 PM
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So maybe switch the two brake assemblies , left to right and right to left ? Maybe I had them upside down . New pictures will show that the levers must be pulled inwards , to brake on rotor . Does this look right ? Thanks , again .


 
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Old 04-17-2020, 12:34 PM
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I'll tell you what LT1Jaguar , you are certainly going to have a dressed up rear end !
 
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Old 04-17-2020, 12:42 PM
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Also , when I get my pads and it's time to adjust e brake , could I just measure the rotors and use a gage bock , say .020 thicker and set in the relaxed state ? Seems like that would work .
Thanks again , Bob
 
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Old 04-17-2020, 02:18 PM
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I'll post another picture that shows that when cable is pulled , the left arm will be pulled outward and the right arm will be pulled inward , what am I missing ? Thanks LT1Jagaur , I turned them over so the arms will work the e brake when pulled inward . Pictures of this in a previous post.

 
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Old 04-17-2020, 02:56 PM
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Beat me to it!!

the bridle usually seen in USA cars for the eb brake is not used by Jaguar. See your sketch!!

look at the cams on each actuating pad. work by the same pull. Then the "swivel" aka ****** block in winch terms to redirect the pull from one direction to one 90 degrees away...

Adjusting them is the "fun" so I read!!

Mine seenms OK, but no bite. That caused a near disaster... And I am no longer abe to get down and under and fix that...

Carl
 
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Old 04-17-2020, 03:21 PM
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Thanks Carl , the picture just not make sense , thanks for the confirmation ! Bob Oh and I know what you mean about getting under a car , since I retired I bought a used Kwik-Lift . It really has saved my knees , LOL


 

Last edited by 35olds; 04-17-2020 at 03:25 PM. Reason: to add picture
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Old 04-17-2020, 03:48 PM
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Here's my take on it Bob, from experience and theory. My "finished" pictures don't have the cable because that piece is still in the car, it will be a simple hookup once I bolt the rear back in. I believe the trouble you are having with the left and right cable direction is because the shop manual picture in your last post is for a UK RHD car. The e-brake handle in that car would be on the right side of the transmission tunnel where the US LHD version is on the left side of the tunnel. But the operation is exactly the same; the cable housing and cable end anchor to one or the other brake lever and when the cable is pulled (applied), the levers are pulled towards each other.

In my stock setup, it isn't possible to turn the e-brake units over and install them on the opposite sides, I think you would see immediately that wasn't going to work. Another tip on the new pads, They are in sets and one of the shoes is tapered with the thin end pointed toward the "pull-rod" end of, I believe, the larger pad carrier. It is to account for the short pivot radius from the anchor bolts to the pull-rod.

Adjusting: the shop manual outlines how to do it, but all I can remember is how I actually did it. My differential was out of the car and convenient so once I figured out the tapered brake pads and got everything mounted, I set the large pull-rod screw to



let the pads barely rub the rotor when fully relaxed. I then pulled both levers together to set the brakes and saw how much "stroke" I had while doing this. If it was at about the limit of e-brake cable travel, I set and released the brakes a few times to see if the auto adjusters would take up the slack (as they should, make sure you free yours up so they work). And to tell you the truth, I played with this adjustment thing for 3-4 hours until I got it where I wanted it.

Here's a couple more pictures.

Dave
 
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Old 04-17-2020, 03:56 PM
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Beautiful car!! A replica Cobra has always been one of two dream cars for me. I almost committed last year, but I just couldn't stretch the $$$$. I found this S3 in great shape with the LT1/trans included and kind of fell in love with it-I think it's a very good looking body style.

I wish you the best of luck.

Dave

P.S. My other dream car is a C2 Corvette roadster.
 
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Old 04-17-2020, 06:11 PM
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Thanks again Dave , I've wanted a Cobra for over 30 years . I'm not getting any younger I decided that you can't take it with you .LOL , the more I ask , the more I'm realizing this is going to be a real project . It always works out . I think I see what you mean , by the one cable working the system , The inner cable pulls in lever until the pads stop movement then keep pulling up on handle and that pulls the other lever inward , actually that is exactly what you said . I think LOL
Bob , and thank you for the Good Luck !
 
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  #13  
Old 04-18-2020, 09:29 AM
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Good morning LT1 Jaguar , I got to thinking . That cable works just like hand brakes on a bicycle ! LOL , I'm really getting slow in my thinking now days , LOL , But I think I've finally got it !!
Thanks to all , Bob
 
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  #14  
Old 04-18-2020, 01:21 PM
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I missssed the bike brake education in my early years. Minewere new departure coaster brakes. rear wheel only!! Jut reverse pedal and the wheel stops. Un;less the arm got loose or a little clip inside busted.. Each not unknwn!!
Carl w
 
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Old 04-19-2020, 01:43 PM
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Check the action of the handbrake on a bicycle wheel , pull the lever as you watch arms movement , The Jaguar is e brake is the exact same thing , from the way it looks , that's the only way it would work . I Think LOL
Bob
 
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Old 04-19-2020, 02:50 PM
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That's correct, remembering that one arm of the bicycle brake represents the complete e-brake mechanism on one side of the differential. The other bike brake arm represents the other complete e-brake mechanism. Pulling the two e-brake levers towards each other sets both e-brakes.

Dave
 
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  #17  
Old 04-21-2020, 11:50 AM
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After more searching on the net , it's called a BOWDEN Cable . I believe a guy could fabricate his own cable .
Bob
 
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