The muck and gunge both inside and outside
Cleaned, seal positioning disc separated from the spring, and the external boot turned inside-out and its clamping ring removed. This also shows the correct position for the bleed nipple and hence the hose.
Tap the edge of the cylinder at an angle to dislodge the piston. This and the chamfer on the inside of the cylinder prevents a lip being created which will trap the piston.
Showing the very close fit between piston and cylinder wall. I have read one claim where so much wear had taken place that the piston got 'cocked' in the bore and jammed. I can't really see this, the seal would have become so loose it wouldn't seal at all long before that, more likely an under-sized piston had been used.
The outer boot with the larger diameter turned 'inside-out' to show the small inner ring that gives a seals the boot to the push-rod as well as the large outer ring that seals it to the cylinder.
The plastic disc that butts up to the fluid side of the seal, showing the three holes.
Not terribly clear, but the pale patch is significant erosion of the cylinder wall, the reddish area lighter corrosion.
Showing the bleed hole (circled) drilled along the line of the join of the cylinder wall to the back wall, in an arc at the top of the cylinder, normally at the highest point of the cylinder when the car is on its wheels or has the front raised.
