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Title: Dual brakes ?.
Post by: stretch1940 on June 23, 2020, 01:02 PM

I have a 2a 88 with a dual brake master cylinder installed it has 2 ports 1 7/16 and 1 3/8. I bought a shuttle valve (599443) it has 3 ports that are 7/16 and 2 ports that are 3/8 it has a brake switch.
I don't understand why 3-7/16 ports. 1 to each front brake?. Or do I have the wrong shuttle valve.

Title: Re: Dual brakes ?.
Post by: Red90 on June 23, 2020, 01:23 PM

One port has a plug, NRC4137. But you could run separate front lines, if you want.

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Title: Re: Dual brakes ?.
Post by: Red90 on June 23, 2020, 01:27 PM

I should add... You don't really "need" it. It is a PDWA. Just a warning device that one circuit has lost pressure. Half the time they are seized and don't work. Later on in the Defender lifetime, they removed it and added a float to the reservoir, which is more useful.

Title: Re: Dual brakes ?.
Post by: stretch1940 on June 23, 2020, 05:56 PM

Thanks John
So why two sizes of brake pipes. Are the fitting threads just fine thread?

Title: Re: Dual brakes ?.
Post by: Red90 on June 24, 2020, 09:39 AM

Quote from: stretch1940 on June 23, 2020, 05:56 PM
Thanks John
So why two sizes of brake pipes. Are the fitting threads just fine thread?

I'm not familiar with what Land Rover used for brake fittings at that time. Probably one size for front and one for rear to not mix them up. If I read correctly, Land Rover used a strange British only fitting style which is slightly different from what was used domestically.

Title: Re: Dual brakes ?.
Post by: stretch1940 on June 24, 2020, 10:54 AM

Im trying to look up the part # for the pipes. What does NRC mean

Title: Re: Dual brakes ?.
Post by: Red90 on June 24, 2020, 02:48 PM

Just part of the part number, if you mean something like NRC4069.

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General => Technical Discussions => Topic started by: stretch1940 on June 23, 2020, 01:02 PM