Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 789 / 881

TORQUE REQUIREMENTS.
The torque values given in Chart 9102 are derived from oil-free cadmium-plated threads and are recommended
for all airframe installation procedures where torqueing is required, unless otherwise noted in sections where
other values are stipulated. Propeller torque values are found in Chapter 61 of this manual. Chart 9101 lists the
torque values for flared fittings of various sizes and material.
— CAUTION —
DO NOT OVERTORQUE FITTINGS
— Note —
When flared fittings are being installed, ascertain that the male threads are properly
lubricated. Torque the fittings in accordance with Chart 9101.
CHART 9101. FLARE FITTING TORQUES
TORQUE—INCH-POUNDS
TUBING ALUMINUM - ALLOY STEEL TUBING HOSE END FITTING
OD TUBING FLARE - AND FLARE AND
INCHES 10061 OR AND 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 700 1150
1 - 1/4 600 900 — — — — — — — —
1 - 1/2 600 900 — — — — — — — —
1 - 3/4 — — — — — — — — — — — —
2 — — — — — — — — — — — —
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
9 1 - 0 1 - 0 0
Page 91-01
Revised: May 15, 1989
4A20
PIPER AIRCRAFT