Please read ALL of the below information before attempting to install!
This image shows where the foot pedal’s free play comes from. It is absolutely necessary that there be some amount of clearance, otherwise, the seals may be pushed forward enough to prevent the intake/return ports from opening up again to allow excess pressure to vent to the reservoir.
We recommend starting off with 5mm clearance and then adjusting the booster push rod.
Too little clearance may cause the brakes to lock on slowly as you drive. Too much clearance will make your pedal feel soft, with excessive travel.
The intake/return ports are less than a millimetre in diameter, and the seal lips sit immediately behind them, so it doesn’t take much of a miss adjustment to close off the ports, even partially.
“Always bench bleed your brake master first and remember; nothing you do at the pedal affects clearances inside the master cylinder body until the push rod starts to push the seal assemblies forward.” – HFM Mechanic Note
*Please ensure the Brake Master (Brake Lines, Proportioning Biased Screw and Reservoir Grommets etc.) is free from fault or leaks immediately after installation as we will not be liable for damages.
