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Piper Seneca,
I have a quick question regarding system on a piper seneca. IT is !!! what's
the pressure on Hydraulic system when the gear is uP? and how about when it is going down? I check with the Mainteneace today, they said somewhere around 600~800 PSI, but I always thought it was somewhere around 1500s. So, if anyone knows the answer, great! Thanks In Soo hwang |
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According to my M/M:
High Pressure (Gear UP) pump puts out 2000 psi. It is turned off, however, by a pressure switch @ 1800 +/- 100 psi. Low Pressure (Down) is 500-800 PSI, just as your Maintenance people said. Interesting note: The POH for my Seneca has a schematic which shows the pump (gear up) operation as being turned off by the up-limit switches. The M/M correctly shows the pump being shut off by the pressure switch. Just hope that you never have to replace that pressure switch. It cost me over 400 bucks (USED), a few years ago "In Soo" wrote in message news:EkQAd.11650$c%.10213@okepread05... I have a quick question regarding system on a piper seneca. IT is !!! what's the pressure on Hydraulic system when the gear is uP? and how about when it is going down? I check with the Mainteneace today, they said somewhere around 600~800 PSI, but I always thought it was somewhere around 1500s. So, if anyone knows the answer, great! Thanks In Soo hwang |
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