Volvo Owners Club Forum - View Single Post - S40 (New) Brakes :

IainG · Apr 22nd, 2023, 20:02

Hi Greg
Sounds a bit like a master cylinder problem. Sometimes when bleeding brakes the travel of the master cylinder piston is greater than normal. The piston seal can move into an area of the cylinder not normally used. If that area of the cylinder is corroded or rough it can damage the seals.

Especially if no external leaks are showing it has to be internal

Apr 22nd, 2023, 20:02	#2
IainG Premier Member Last Online: Yesterday 08:44 Join Date: Apr 2013 Location: Plymouth	Hi Greg Sounds a bit like a master cylinder problem. Sometimes when bleeding brakes the travel of the master cylinder piston is greater than normal. The piston seal can move into an area of the cylinder not normally used. If that area of the cylinder is corroded or rough it can damage the seals. Especially if no external leaks are showing it has to be internal __________________ V50 2005. 2.0D