Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 1591 / 1956

PAGE 1
Feb 28/07 8C15
91-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
CHARTS
1. Torque Requirements
(PIR-PPS20015-1, Rev. S.)
CAUTION: DO NOT OVERTORQUE FITTINGS.
Chart 1 lists the torque values for flared fittings of various sizes and material.
NOTE: When installing flared fittings, verify that male threads are properly lubricated.
The torque values given in Chart 2 are derived from oil-free cadmium-plated threads and are
recommended for all airframe installation procedures where torquing is required, unless other values are
specified in subject chapter/section. Engine torque values are found in the latest revision of Lycoming
Service Table of Limits SSP-1776; and propeller torque values are found in 61-10-00.
NOTE: If normal operation requires movement between any of the components being clamped
together, tighten the nut (or bolt) enough to insure intended operation of the assembly.
A. Calibrate the torque wrench periodically to assure accuracy, and recheck frequently.
B. If the fastener, screw, or nut is listed in Chart 2, but the mating fastener is not listed, tighten only to
the low end of the torque range specified for the listed fastener. In addition, the following limitations
shall apply:
(1) Fastener and nut threads shall be clean and dry (free of lubricants). If the subject
chapter/section requires the fastener and/or nut to be lubricated prior to tightening and does
not specify a torque requirement, use the Chart 2 torque range reduced 50 percent.
(2) Chart 2, Sheet 1, shall be used for free running nuts, provided minimal friction drag is
determined as specified below.
Torque — Inch-Pounds
Tubing Aluminum - Alloy Steel Tubing Hose End Fitting
OD Tubing Flare - and Flare and
Inches 10061 or 10078 and 10061 Hose Assemblies
Minimum Maximum Minimum Maximum Minimum Maximum
1/8 ——— ——— ——— ——— ——— ———
3/16 ——— ——— 90 100 70 100
1/4 40 65 135 150 70 120
5/16 60 80 180 200 85 180
3/8 75 125 270 300 100 250
1/2 150 250 450 500 210 420
5/8 200 350 650 700 300 480
3/4 300 500 900 1000 500 850
1 500 700 1200 1400 500 1150
1-1/4 600 900 ——— ——— ——— ———
1-1/2 600 900 ——— ——— ——— ———
1-3/4 ——— ——— ——— ——— ——— ———
2 ——— ——— ——— ——— ——— ———
CHART 1
FLARE FITTING TORQUE VALUES