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Brake Bias Valve


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#1 pusb

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Posted 29 December 2018 - 09:47 AM

Have I reinstalled this the right way around?

 

I've got pictures of it beforehand, but they aren't close enough to show detail.

 

FqORWyq.jpg



#2 Ethel

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Posted 29 December 2018 - 10:42 AM

You have if the one connected pipe is to the rear brakes. 

 

The connection above it is to the master cylinder's bottom outlet if it has a yellow band, also identifiable by the bigger diameter on that outlet compared to the top.



#3 pusb

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Posted 29 December 2018 - 11:15 AM

You have if the one connected pipe is to the rear brakes. 

 

The connection above it is to the master cylinder's bottom outlet if it has a yellow band, also identifiable by the bigger diameter on that outlet compared to the top.

 

Thanks very much.

 

Also, when using ready made pipe kits, I don't suppose you know how to determine which end of the front to rear pipe is which? I know one is metric and the other is UNF, but other than just trying both to get a feel, is there a way to tell?



#4 Itsaminithing

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Posted 29 December 2018 - 12:22 PM

The metric thread fittings should have a notches on the head, the UNF fittings don't.

https://www.automec....e-pipe-fittings

 

.... so it looks like that's the wrong end you've fitted as the AP bias valve uses metric threads.



#5 pusb

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Posted 29 December 2018 - 12:28 PM

The metric thread fittings should have a notches on the head, the UNF fittings don't.

https://www.automec....e-pipe-fittings

 

.... so it looks like that's the wrong end you've fitted as the AP bias valve uses metric threads.

 

Thats great, thank you.

 

One of the ends does have those notches on it



#6 Ethel

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Posted 30 December 2018 - 12:00 AM

M10x1 is slightly bigger diameter than 3/8unf which at 24tpi is one turn less in an inch.

#7 Spider

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Posted 30 December 2018 - 02:14 AM

M10x1 is slightly bigger diameter than 3/8unf which at 24tpi is one turn less in an inch.

 

If it screws in by hand in to a wheel nut, then it's 3/8", if it doesn't, then it's M10.

 

I suggest this as it can be hard to pick at times, if the nut doesn't have the identifying marks on it.



#8 Ethel

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Posted 30 December 2018 - 02:37 PM

Yes, it can be hard to judge with the pipe pushing it out of perfect alignment.

 

If you've got the space to do it, then putting the threads of a male union against a wheel stud should easily show up if the pitch isn't the same.






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