I would not recommend going back to a mechanic that told you the master cylinder has nothing to due with clutch pressure.
99.9% chance you need a master cylinder if the pedal will not hold pressure, Its what pressurizes the system.
The master cylinder is the pump, The Slave is what it says, "Slave" and only does what the master tells it to.. The slave simply cannot "suck air", If it did, it would be blowing fluid everywhere.
We have made our system VERY simple to bleed. IIf it will not bleed it is because the master is weak, It takes minutes to bleed it if you follow the clear instructions included with every slave.
Bleeding instructions, This takes just minutes if followed directly as written.
Loosen slave cylinder bleed screw in short SS line.
Fill Reservoir with fresh Dot 3 , Dot 4 or Dot 5.1 (DOT 3-4 compatible) brake fluid and let sit for 2-3 minutes keeping reservoir full, Fluid level should slowly lower, If it does not call us as your master cylinder adjustment may be off.
With bleeder slightly open at slave line, Pump pedal by hand completely and slowly (pausing at the top for a second or two) 10-20 times making sure pedal is pulled completely up on each stroke by hand to distribute fluid through system making sure to keep reservoir full. Allow system to Gravity bleed for approx 2-3 minutes keeping reservoir full Close bleeder valve.
Pump pedal 15-20 times, Release pedal and pull to full up position. Open bleeder and allow to gravity bleed for an additional 1-2 minutes. Close bleeder and pump pedal until you get a full returning pedal
If clutch pedal will not return fully master cylinder may be weak and in need of replacement.
Last edited by Joe@ZSpeed; 07-31-2014 at 10:43 AM.
|