Brake master cylinder oneway valve question

[leon]

Hi fellas and gals, the information I require is regarding the master cylinder oneway valve, the question is does it need to be installed into the master cylinder if a brake booster is installed.
I recently overhauled the brake master cylinder and what I discovered was it didn't have a non return valve although I got one in my brake kit.
Should it be installed?
Regards.
Leon

[ardiesse]

Leon,

If your car has four-wheel drum brakes, then yes, you need the check valve.  (Well, you don't need the check valve in that the brakes will function perfectly adequately without one, but with an increased risk of slow fluid leaks.)  If you have disc brakes, get rid of the check valve.  (On the other hand, if you have a disc brake system and you keep the check valve, you get spectacularly fast brake pad wear and hot brakes.)

Rob

[leon]

Thanks Rob you're a man of knowledge👍 since your reply a mate of nine was saying your 100% right so I'm going with that😊
Regards.
Leon