I was wondering if anyone out there dealt with this.  I had an unusual thing happen with my hydraulics.  I hadn’t flown for a month.  I typically bleed off the pressure post shutdown with flaps–not sure why other than thinking it might not allow a flat spot on o ring to form.  Any way, OAT was 30F.  Everything normal on gear retract.  Pump started rapidly cycling.  Extended gear and it stopped. No relation to flap position or cycling.  Retracted same thing.  Landed with three green.  Swung gear, completely normal.  No leaks, burps, or anything anywhere.  Kept of stand with gear up for 30 minutes.   Nary a burp.  System had been foolproof for 1000TT+. Will put it back together tomorrow and go flying but any of you had anything like this. 

L IV

Michael D Smith