Safetying Procedures; Safety Wire Procedures; Torque Values - Straight Threaded Fittings - Cessna T182 Series Service Manual

MODEL 182 & T182 SERIES SERVICE MANUAL
THREADED STRAIGHT FITTING TORQUE VALUE (RIGID TUBE)
FLARED END STRAIGHT END
TUBE ALUMINUM
ALUMINUM STEEL 6061-0 ALUMINUM STEEL 6061-T(X) ALUMINUM
OUTSIDE On Oxygen Lines 5052-0 ALUMINUM w/ steel sleeve
DIAMETER Torque-Limits Torque-Limits Torque-Limits Torque-Limits
Torque-Limits Torque-Limits
in-lbs. in-bs. inlbs. in-lbs. in-lbs.
in-bs.
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. I MAX. TUBE WALL MIN. MAX.
18
20 30 45 55
316 90 100 30 40 90 100 0.028
45 55
14 40 65 135 150 40 65 135 150 0.022
80 105
0.028
80 105
0.035
80 105
0.049 90 115
516 60 80 100
125 180 200 60 80 180 200 0.028 80 105
0.035 80 105
0.042 125 175
38 75 125 270 300 75 125 270 300 0.028 125 175
0.035 125 175
0.049 125 175
12 150 250 450 500 150 250 450
500 0.028 135 180
0.035
200 300
0.049
400 500
0.058 400
500
0.065 400 500
58 200 350 700 800 200 350 700 800 All 500 600
34 300 500 1100 1150 300 500 1100 1150 All 600 700
1 500 700 1200 1400 500 700 1200 1400 All 1000 1300
1-1 4 600 900 1300 1450 600 900 1300 1450 All 1300 1500
1-1 2
600 900 1350 1500 600 900 1350 1500
All
1400 1700
2 600 900 1500 1700
Table 1-4. Torque Values - Straight Threaded Fittings (Line)
1-8. SAFETYING PROCEDURES. The use of safety 2. Copper that is cadium-plated and dyed yellow
wire, cotter pins, lockwashers, and self-locking nuts is used for shear and seal wiring applications.
is to prevent relative movement of critical components (a) Shear applications are those where it is
subject to vibration, torque, tension, etc., which could necessary to break or shear wire to permit operation
cause attaching parts to be broken, loosened, and/or or actuation of emergency devices.
detached. (b) Seal applications are where wire is used
with a lead seal to prevent tampering or use of a
1-9. SAFETY WIRE PROCEDURES. device without indication.
a. Identification. Lockwire comes in three types 3. Aluminum Alloy (Alclad 5056) is dyed blue
which are identified by size and color. The three types
and is used exclusively for safety-wiring magnesium
are classified by use.
parts.
1. Inconel and Monel wire is used for general
4. Size of wire is dependent on material and
lockwiring and is identified by a natural wire color.
purpose of installation.
(a) Inconel can withstand temperatures up to (a) 0.020-inch diameter copper wire should be
1500°F. used for shear and seal application.
(b) Monel can withstand temperatures up to
(b) 0.020-inch diameter wire may be used to
800°F.
lockwire parts with tie holes smaller than 0.045 in-
1-8 Revision 1