Piper SARATOGA PA-32-301 Maintenance Manual page 603

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
GENERAL.
TORQUE.
The torque values given in Chart 9102 are derived from oil-free cadmium-plated threads and are
recommended for all airframe installation procedures where torquing is required, unless otherwise noted.
Engine torque values are found in the latest revision of Lycoming Overhaul Manual, and 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.
TIGHTENING NUTS ON FLARED TUBE ASSEMBLIES.
Nuts on metal flared tube assemblies shall be tightened finger tight and then tightened with a smooth
jawed wrench to the torque specified in Chart 9101. The fittings shall not be lubricated.
CHART 9101. TUBE AND HOSE ASSEMBLY TORQUE
TORQUE - INCH POUNDS
ALUMINUM OXYGEN
AN818 ALUMINUM STEEL
TUBE (MS33583)
(NUT) O.D. TUBE
TUBE (DOUBLE FLARE)
DASH O.D.
NUMBER INCHES MIN. MAX. MIN. MAX. MIN.
MAX.
-2 1/8 20 30 75 89
-3 3/16 25 35 95 105 --- ---
-4 1/4 50 65 135 150 ---
-5 5/16 70 90 170 200 100 125
-6 3/8 110 130 270 300 200 250
-8 1/2 230 260 450 500 300 400
-10
5/8
330 360 650 700
- - -
-12 3/4 460 500 990 1000 - ---
-16 1 500 700 1200 1400
--- ---
-20 1 1/4
800 900 1520 1680 ---
-24 1 1/2 800 900 1900 2100
-32 2 1800 2000 2660 2940
---
---
Values for aluminum tube also apply to copper tube. If any element of a given connection is aluminum (nut,
sleeve, nipple, tube, etc.) the values for aluminum tube shall apply.
91-01-01
Page 91-01
Revised: August 23, 1982
3C2