GD427 in action

GD427 in action

Saturday, 23 April 2011

Testing hydraulics

I noticed a small pool of fluid sitting on a chassis cross member which appeared to be coming from a brake union. As the brake system isn't under any pressure this had me a little confused. Having bought a rolling chassis it led me to consider if any of the brake fittings had been tested before I took delivery. Common sense would tell you even if they had it made sense to check them myself so I set about mocking up the pedal box asssembly in order to apply some pressure to the system. You'll see from the pictures, I basically made a wooden frame to mount the pedal box and master cylinder and then used the supplied pipes and fittings in a tempoarary fashion to connect it all up to the chassis.


Once it was all connected and I'd bled the fluid through the system I tested it with a few pumps and finally held the pedal down for as long as my leg muscles would stand. There were a few leaks, nothing horrendous and a quick tweak with the spanner was all that was needed. I used a Gunson's Easibleed to bleed the fluid through the system and it worked flawlessly, thoroughly recommended.

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