petegardner_901 Posted April 20, 2022 Report Share Posted April 20, 2022 Hi all just fitted a servo to the Spitfire- no problems- but just wondering when it comes to bleeding the brakes should I have the engine running or doesn’t it matter??? Link to comment Share on other sites More sharing options...
petegardner_901 Posted April 20, 2022 Author Report Share Posted April 20, 2022 Oh I know I haven’t connected the vacuum hose yet!! Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 20, 2022 Report Share Posted April 20, 2022 its generally done with no vacuum but if you do it makes the servo stroke better pete Link to comment Share on other sites More sharing options...
PeteH Posted April 20, 2022 Report Share Posted April 20, 2022 I suppose the probable answer might be how do you do your modern?. Most have Brake boost/servo`s. And most in my experience are bled whilst the engine is not running. Pete Link to comment Share on other sites More sharing options...
dougbgt6 Posted April 20, 2022 Report Share Posted April 20, 2022 1 hour ago, Pete Lewis said: its generally done with no vacuum but if you do it makes the servo stroke better Yep, no vacuum, engine running, can't see how that helps? Doug Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 21, 2022 Report Share Posted April 21, 2022 there are odd differences with bleeding with or without any vacuum a remote servo is generally bled no vac it doesnt make a lot of difference but they dont like being stroked without fluid lubrication i would initial bleed without vac but once filled give it a couple of strokes with vac to actuate the servo fully a mechanical servo attached to the master cyl input with or without vac has no effect as the vac operation is not within the fluid system. a modern with accumalators and anti lock is a whole different ball game operation of any servo without vac can give you a lazy pedal as you have to operate the diaphragm as well as purgiing fluid its all down to preference pete 1 Link to comment Share on other sites More sharing options...
68vitesse Posted April 21, 2022 Report Share Posted April 21, 2022 Looks very much like the servo in my Vitesse, fitted many years ago, I have never run the engine while bleeding the brakes. And not wishing to start an argument I have always used silicone brake fluid. Regards Paul. Link to comment Share on other sites More sharing options...
petegardner_901 Posted April 21, 2022 Author Report Share Posted April 21, 2022 Thanks all as usual loads of excellent comments- don’t know what I’d do without the forum….! Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 21, 2022 Report Share Posted April 21, 2022 make more TEA Ha !!! Pete Link to comment Share on other sites More sharing options...
petegardner_901 Posted April 21, 2022 Author Report Share Posted April 21, 2022 Just had one!!! Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 21, 2022 Report Share Posted April 21, 2022 Thats not a Triumph Mug , chickens dont count.........well they cluck Pete Link to comment Share on other sites More sharing options...
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