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D3 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc.

 
 
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Old 2nd November 2013, 12:37 PM
snapdragon snapdragon is offline
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Join Date: Nov 2011
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All sorted, part was £18 from Audi dealer incl. sachet of castor oil.
Left caliper on car (didn't disconnect hydraulics or electronics).
Took a while with VCDS functions to pop the piston out as the instructions from ELSAWIN didn't achieve this. Hardest part was keeping it clean inside, kept washing out with isopropy alcohol spray and brake fluid.
Took the piston into house and cleaned off the black hard deposits/corrosion with 2500 wet and dry and washing up liquid under the running warm tap.
The caliper looked fine apart from the rubber boot recess which I scraped out. The EPB thrust nut that you put back in the caliper and screw all the way back and the piston needs to be correct orientation so the thrust nut engages into it Cleaned out the caliper and fitted the oiled up new seal and then oiled up boot and fitted that to piston as per ELSA. Offered up piston and teased dust boot into it's groove. . Pushed the calliper in with caliper winding tool and dust boot pops into other groove on piston.
Refit to pads and carrier and then do a few function tests and all OK.
Bleed that corner's brake fluid thoroughly to wash out any particles and stray castor oil.
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