July 31, 2023 at 9:06 pm #7893JohnnyParticipant
I’m refurbishing the brakes on my Somerset including replacing all the brake cylinders . Rears both done all fine, but when I came to the front brakes I noticed that the whoever did them last installed both bleeder screws in the lower of the two unions on the back of the wheel cylinders. In other words the bleeder screws are positioned horizontally. I’ve always been told that bleeders should point upwards because air is lighter than brake fluid.
BUT, as this is my first time working on Somerset brakes I wanted to know – Is this positioning normal? or has the previous person got the configuration wrong? The wheel cyclinder fittings currently go like this (I tried to take a pic of the back plate but couldn’t get a good one, so I’ll try and explain in words):
Forward brake cylinder (i.e. the one nearest the front of the car)
Top union: brake hose connected
Bottom union: cylinder connecting pipe connected
(seems right to me?) BUT
Other wheel cylinder
Top union: other end of the cylinder connecting pipe
Bottom union: bleed screw
The connecting pipe goes over the top of the wheel hub. I wonder if the connecting pipe should go under the hub and connect to the bottom union. Or maybe everything’s all the wrong way round…!
The front view of the current set up (driver’s side) is at the bottom of the post.
The expertise of forum members would be most welcome! If any kind member could share the set up on your car that would be great.August 30, 2023 at 9:15 am #7927Richard HughesParticipant
Yes that is all correct. This is one of the reasons these cars are a sod to bleed as it’s difficult to get all the air out of the front brakes.
I use a Sealey VS820 pressure bleeder. The supplied cap fits our Girling reservoirs but I recommend a bit of PTFE tape on the reservoir thread and also nice new DOT 4 fluid. Done two Somersets and a Hampshire with this system now and it’s a lot quicker and easier to purge the air than pedal pumping.September 4, 2023 at 9:57 pm #7929JohnnyParticipant
Excellent thanks. I went ahead and refitted everything up as it was, just with new components so it’s a relief I don’t have to do it all again. Great tip about the kit, and timely as this weekend is for bleeding. I was just going to use traditional pedal pumping to a jam jar but from what you say that would be pretty frustrating.
Thanks for the advice I think you’ve just saved me from a miserable weekend!
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