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Thread: Hydraulic pumps- on or off during turnaround??
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Old 4th June 2008 | 18:23
  #30 (permalink)  
rubik101
 
Joined: Jul 2000
Posts: 942
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From: Thailand
Smudge, you are quite right, however, the reservoir does not need to be pressurised with bleed air before the HYD pumps are run on the ground. The positive air pressure is to prevent foaming when at high altitude.
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