[Spridgets] Linda's disc brakes

[GUY DAY]

 In 50 odd years of bleeding brakes without using any thing other than a rubber or plastic tube going down to a jam jar (preserves jar) to collect the fluid pumped out, the m/cyl cap has been OFF the master cylinder and no fluid has ever splashed out, no matter how hard I've pumped. When you press the brake pedal the level in the m/cyl will will drop very quickly and you need to keep an eye on the fluid level - with the cap on you can't see the fluid level.
You can bleed drum brakes without the drum on but you need something to hold the pistons in the slave cyls such as a clamp or you can wire the pistons in. Occasionally useful to do when a slight leak in the slaves is suspected or you are building with the car on stands.
I had a pit mechanic, when time was of the essence, bleed a rear brake by slipping the slave piston out past the seal lip, and whilst the pedal was being pressed and the cyl filled with fluid slip the seal and piston back in place - it worked and it cost a lot in fluid !

Linda - please remember that brakes are a bit of a life saver both on your side and on other peoples - they need doing properly. You errors and questions show you do not have much knowledge in that area but they do need doing correctly. Having a full understanding of your braking system is really essential before you start with brakes. You should not learning on the job. For your sake, let someone else do them.
Regards
Guy R Day

     On Sunday, 30 June 2019, 15:18:33 BST, Rick Fisk via Spridgets <spridgets at autox.team.net> wrote:  
 
 I always leave the cap on the master (it's vented).  If you leave the cap off you sometimes will get brake fluid splashing out causing a big mess when you pump hard.  If the cap is plugged your brakes won't work anyways as the vent is essential for proper operation of the master.

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On Jun 30, 2019, at 9:48 AM, crusaderchuck55--- via Spridgets <spridgets at autox.team.net> wrote:


 Hold it guys!  Unless Linda's car was completely changed to a dual brake master cylinder and all new lines installed to acomodate the pressure switch she has none of this.   Her car has the stock brake & clutch master cylinder.As far as bleeding a spridget brake system it's advisable to remove the master cylinder cap or at the very least crack it open.  Why?  The cap is vented to atmosphere but if there is dirt restricting the vent function , with the cap in place when using a vacume type bleeder , literally you'd get next to nothing.As well , if the bleeder screw is packed with dirt , there is nowhere for fluid to exit when attempting to bleed.Chuck
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