acbateman Posted September 19, 2005 Share Posted September 19, 2005 We have a 1700 XF with a 1991 live axle chassis and standard brakes. I noticed that the r/h disk was getting more marked that the l/h one ie not as shiny and that the r/h wheel appears to be creating more brake dust. Since the disks appeared original [26000 miles] I replaced disks and pads this year. However, the l/h disk has a mirror finish while the r/h one is becoming more marked again. I wondered whether the r/h caliper needs a rebuild but the brakes work well and the car stops in a straight line without pulling to one side. Any ideas please? Edited by - acbateman on 19 Sep 2005 21:44:53 Link to comment Share on other sites More sharing options...
mutcer Posted September 19, 2005 Share Posted September 19, 2005 I should think of either a sticking caliper piston, a sticking sliding caliper or, occasionally, deterioration on the inside of a flexible brake hose may inhibit fluid return and keep thepressure partially on an individual piston caliper. Flexible hoses are often forgotten and they do have a limited life. Link to comment Share on other sites More sharing options...
acbateman Posted September 19, 2005 Author Share Posted September 19, 2005 Thanks. What's the difference between a sticking caliper piston and a sticking sliding caliper? Edited by - acbateman on 19 Sep 2005 21:44:26 Link to comment Share on other sites More sharing options...
Gun Bunny Posted September 19, 2005 Share Posted September 19, 2005 If you still have the standard calipers fitted you will find you have 2 pistons in each caliper. Each piston acts directly onto the back of a brake pad. If you had a sliding caliper it would only have 1 piston per caliper, force is applied directly to the rear of one pad and transfered to the other pad by the sliding movement of the caliper. Link to comment Share on other sites More sharing options...
mutcer Posted September 20, 2005 Share Posted September 20, 2005 There are good photographs on the Alcester Racing site, and the Haynes Brake manual is very good. Link to comment Share on other sites More sharing options...
acbateman Posted September 21, 2005 Author Share Posted September 21, 2005 Many thanks - I'll have a look. Link to comment Share on other sites More sharing options...
acbateman Posted September 25, 2005 Author Share Posted September 25, 2005 Does anyone know a good place to get calipers rebuilt please - or is it cheaper to replace them [standard ones]? Link to comment Share on other sites More sharing options...
mutcer Posted September 25, 2005 Share Posted September 25, 2005 I should enquire about a price for both but would prbably end up buying new, being paranoid about such things. Are the wheel bearings Ok? (Just an after thought.. I don't know how much effect it has, but could one disc be wobbling around a bit more than the other before and in the initial phase of pad contact onto the discs?) Link to comment Share on other sites More sharing options...
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