Piper Service Letter No. 207
Applicability: All Piper models incorporating the use of valve part number 12956-04
Issue Date: June 15, 1953
Subject: Oil Quick Drain Valve Assembly
Summary: Vibration has caused the quick oil drain valve to break at the rubber washer seal and also at the point where the copper drain tube is soldered.
Open PDF: PIP_SL0207.pdf