Front brakes holding on after rear calipers replaced

SimonTh · Sep 12th, 2021, 15:53

Hi just replaced both rear brake calipers on my 2002 V70 T5. Rear brakes seem to work fine but now my front brakes are holding on. Has anybody come across this problem before?

Simmy · Sep 12th, 2021, 18:34

its possible that you may have to much fluid in it if you just pushed back the pistons try bleeding calipers and monitor the fluid in the res

SimonTh · Sep 18th, 2021, 17:23

After pressure bleeding the brakes all round front brakes have now stopped holding on.
Brakes work fine but now have a long pedal but only when engine is running.
Pedal is good when engine isn’t running.
Any ideas?

JoeNinety · Sep 18th, 2021, 17:48

long pedal after a good bleed with new calipers (pistons) can be caused by the piston rubbers not having properly bedded in. a fix that worked for me in the past was to fix the brake pedal to "on" with a block of wood and leave it overnight, to get the calipers positioned and working correctly. (sound like you may want to do this with the engine running, then turn off once you have brakes fixed on)

cheshired5 · Sep 18th, 2021, 19:44

Quote:

Originally Posted by SimonTh

After pressure bleeding the brakes all round front brakes have now stopped holding on.
Brakes work fine but now have a long pedal but only when engine is running.
Pedal is good when engine isn’t running.
Any ideas?

Careful you're not confusing the softer feel of vacuum assistance (engine running) with the more solid pedal feel with engine off when the vacuum has been expelled after a few pedal presses.

Sep 12th, 2021, 15:53	#1
SimonTh New Member Last Online: Apr 2nd, 2024 20:07 Join Date: Oct 2016 Location: Birmingham	Front brakes holding on after rear calipers replaced Hi just replaced both rear brake calipers on my 2002 V70 T5. Rear brakes seem to work fine but now my front brakes are holding on. Has anybody come across this problem before? Last edited by SimonTh; Sep 12th, 2021 at 16:32.

Sep 18th, 2021, 17:48	#4
JoeNinety Senior Member Last Online: Yesterday 23:23 Join Date: May 2019 Location: Winchester	long pedal after a good bleed with new calipers (pistons) can be caused by the piston rubbers not having properly bedded in. a fix that worked for me in the past was to fix the brake pedal to "on" with a block of wood and leave it overnight, to get the calipers positioned and working correctly. (sound like you may want to do this with the engine running, then turn off once you have brakes fixed on) __________________ V70 P2 2006 2.4 Petrol 170bhp Est SE Automatic (5 speed) MG Midget Mk1 1962 Previous: RR TDV8 3.6 '08; RR TD6 3.0 '02; RR P38A V8 '99; Audi A4 Cab 3.0 V6 2004; Volvo 740 GLE Est 1989 Have VIDA & VXDIAG NANO on W10Pro - happy to help

Sep 12th, 2021, 18:34	#2
Simmy Premier Member Last Online: Yesterday 23:24 Join Date: Mar 2017 Location: Manchester	its possible that you may have to much fluid in it if you just pushed back the pistons try bleeding calipers and monitor the fluid in the res

Sep 18th, 2021, 17:23	#3
SimonTh New Member Last Online: Apr 2nd, 2024 20:07 Join Date: Oct 2016 Location: Birmingham	After pressure bleeding the brakes all round front brakes have now stopped holding on. Brakes work fine but now have a long pedal but only when engine is running. Pedal is good when engine isn’t running. Any ideas?

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