Hydraulic fluid transfer from B to A system. 737-ALL

Hydraulic transfers (B to A) have been found to be caused by brake shuttle valves. Disconnect the A-IN side of all the brake shuttle valves and pressurize B system. If there is fluid running out of the line (into the A resevoir) replace. This will cure many of the cronic transfer issues.  

Thanks to someone from SWA.


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