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badhuis

Bleeder screw thread

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What is the standard screw thread for the rear brake cylinder bleed screw? Is it 5/16" - 24 ? For the TR4 but I guess it is the same for the whole TR range which is why I am posting it in the general Tech forum.

I think the front bleeding screws have the same thread, correct?

Thinking of using Speedbleed screws - those with an internal spring. Anyone who has experience with these? You can leave these open (quarter turn) when bleeding which makes the whole bleeding process much easier. Or so they say. As I always have a little bit of air in the brake system, despite thorough bleeding with a helper, I thought about having a go with these.

https://www.demon-tweeks.com/eu/goodridge-speed-bleeder-243452/

 

Edited by badhuis
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TR2 &3 with the drum brakes & "Lockheed" axle have different threads for the brake pipes, so I would assume also for the bleed nipples.

 

Bob.

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No they are 3/8" X 24

Stuart.

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Fitted these last weekend and can recommend it to anyone. The car always had a bit of air in the pedal despite bleeding it twice with a helper but now it is gone.

Very easy to use: put a piece of plastic film under the master cylinder cap, then replace all bleeding screws with the new ones. One by one put a tube (with the other end in a jar) on a bleeding screw, open it a quarter of a turn, push the pedal a couple of times until the brake fluid level in the master cylinder gets almost to the bottom, refill master, repeat to other screws. 

All done within 15 minutes I think, only me involved, and a nice hard pedal after.

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