Tuesday 5 June 2018

Brake fluid change

5 years in, brake fluid has a life of somewhere near 2-3 years depending on how much water it absorbs - so overdue for a change.

This little gadget for ~£5 from Ebay was indicating between 2% and 3% water when dipped in the reservoir. Off the scale when dipped in the extracted fluid.

My Gunson Eezibleed was broken out of storage and used to push out the majority of the old fluid (without introducing air to the brake lines) then push in new fluid behind it. It uses pressure from one tyre rather than the traditional two man synchronised brake pedal/bleed nipple approach.

Bleed through each calipper, starting furthest from the brake cylinder, until the fluid ran clear. Of course one bleed nipple was stuck - offside rear - where I had least working space in the garage but a little WD40 loosened it.

Pictured:  ~0.5 litres of old darker removed fluid (left), vs new clear fluid.

Brake pedal feels hard enough, subject to a test run we should be good for another few years.

Note to self - add double garage with a recess in the floor for a scissor jack to the wish-list.

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