Vehicle & Technical > Defender

rock hard brake pedal

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lurch_917:
could also be worn discs if there worn close to the limit the pads have to travel further to make contact

military mad 110:
the pads and discs are new and there is no play in the bearings vac hose connected could it be the servo?

extreme90:
remove the vac hose from the engine and make sure its sucking
check there are no leaks in the vac pipe
theres a one way valve in the servo inlet, make sure thats ok

bogie:
To put all the facts right,its a series 2a fitted with a late defender master and servo.When it had drum brakes all round the pedal was firm at the top,great brakes! I put zeus disks on the front,still brill no difference.When i put them on the rear as well this is when the fun has started.I have no vac leaks.I did this 2 years ago and still its BUGGIN me,i bleed the system now and then but still no difference. The only thing i can think of is some thing aint compatable ie the master or servo.Its now got to the stage where im going to throw the master/servo away and buy a new series dual master and servo because its a great pedal on my other motor! In the back of my mind i remember theres 2 seals in the master and if one leaks it can cause this?????  Just one more thing second pump of the pedal and its firm at the top which makes me think this could be the problem?????

extreme90:
there are different ratio's on servos for the amount of effore required
so they need to be matched to different brake set-ups

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