UKCRC Forum

Technical => Wheels, Tyres, Brakes, Suspension => Topic started by: Dek on Jun 12, 2024, 11:54 AM

Title: Brake servo yoke.
Post by: Dek on Jun 12, 2024, 11:54 AM
I noticed that one of the arms of the brake servo yoke (where the pin goes through the pedal and through the yoke)has fractured. The servo might well be Jaguar but not 100% sure. Is there a general supplier of these if I give the dimensions or is it a case of finding the manufacturer of the servo? If that's the case I might have to replace the rod and yoke as one piece. Will it just pull out or unscrew does anyone know? Thanks in advance.
Title: Re: Brake servo yoke.
Post by: Waitey on Aug 08, 2024, 10:16 AM
It should just unscrew from the rod.

There are lots of sizes availble online for not much money.
Title: Re: Brake servo yoke.
Post by: Dek on Aug 08, 2024, 01:51 PM
Quote from: Waitey on Aug 08, 2024, 10:16 AMIt should just unscrew from the rod.

There are lots of sizes availble online for not much money.

Unfortunately it doesn't and is one piece with the rod. Not enough room either to weld insitu so it looks as though the servo is going to have to come off. :(
Title: Re: Brake servo yoke.
Post by: Waitey on Aug 08, 2024, 02:26 PM
Quote from: Dek on Aug 08, 2024, 01:51 PMUnfortunately it doesn't and is one piece with the rod. Not enough room either to weld insitu so it looks as though the servo is going to have to come off. :(

Or take the boot and the clip out and swap the rod?

It would be quicker (read as less fiddly) to take the cylinder out though.
Title: Re: Brake servo yoke.
Post by: Dek on Aug 08, 2024, 06:51 PM
Quote from: Waitey on Aug 08, 2024, 02:26 PMOr take the boot and the clip out and swap the rod?

It would be quicker (read as less fiddly) to take the cylinder out though.
Peeling the rubber boot back there's a spring, collar and what looks like collets holding the rod in place. If I knew what the donor servo was it might help. Does anyone know if the donor car XJ6 was commonly used?
Title: Re: Brake servo yoke.
Post by: Waitey on Aug 09, 2024, 08:17 AM
Quote from: Dek on Aug 08, 2024, 06:51 PMPeeling the rubber boot back there's a spring, collar and what looks like collets holding the rod in place. If I knew what the donor servo was it might help. Does anyone know if the donor car XJ6 was commonly used?

Do you have a photo of it?

Do it look like that?

https://www.ebay.co.uk/itm/222882522239?chn=ps&_ul=GB&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&mkscid=101&itemid=222882522239&targetid=1814673647462&device=c&mktype=pla&googleloc=9189241&poi=&campaignid=19089547614&mkgroupid=142438599285&rlsatarget=aud-1641271186540:pla-1814673647462&abcId=9303859&merchantid=113563967&gad_source=1&gclid=EAIaIQobChMIyfXYlK_nhwMVW0NBAh3ghTzvEAQYBiABEgIOz_D_BwE
Title: Re: Brake servo yoke.
Post by: Dek on Aug 09, 2024, 01:44 PM
Quote from: Waitey on Aug 09, 2024, 08:17 AMDo you have a photo of it?

Do it look like that?

https://www.ebay.co.uk/itm/222882522239?chn=ps&_ul=GB&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&mkscid=101&itemid=222882522239&targetid=1814673647462&device=c&mktype=pla&googleloc=9189241&poi=&campaignid=19089547614&mkgroupid=142438599285&rlsatarget=aud-1641271186540:pla-1814673647462&abcId=9303859&merchantid=113563967&gad_source=1&gclid=EAIaIQobChMIyfXYlK_nhwMVW0NBAh3ghTzvEAQYBiABEgIOz_D_BwE
Couldn't get a photo in the footwell. The pedal is in the way but yes the servo does look the same. Looks like it could be an XJ6 then. Just got to find an exploded diagram of the internals to see how the yoke rod fits. Thanks for your help.