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Bob uk
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Posted From: 94.197.122.76
Posted on Sunday, 29 June, 2014 - 08:33 am:   Edit PostDelete PostView Post/Check IP

I have noticed over years that any mention about shadows will have a comment about the complex hydraulics

My intention is to bust this myth and allay owners anxiety

Head pressure is the pressure from gravity

Which in a shadow is the hight of the tank to the other bits

This preassure is acting of caliper seals when the brakes are off

Via the dump circuit in the brake valves and the master cylinder circuit

This small amount of pressure helps keep seals against whatever it seals

Fiat in tech docs refer to it as residual pressure

When new and no problems good seals etc Morris minors because then master is under the floor with the reservoir very little head pressure and in service they were known for leaky wheel cylinders

As soon as the brake pedal is depressed the seals seal and brakes pedal hard

The position of reservoir in the moggie made bleeding harder

Shadow

Dot should freely run from all brake bleed nipples engine off no pressure

If not the hoses are blocked

Because the ride rams are high this system has no head pressure therefore won't gravity bleed

In the next episode I will explain about the brake valves

And sucking eggs for the ones who already know

(Message approved by david_gore)