Page 20.6
Chapter 20 Standard Practices
R66 Maintenance Manual
SEP 2012
20-32 Standard Torques
FASTENER SERIES
SIZE
EXAMPLE
FASTENER
DRY TORQUE
(IN.-LB)
NAS 1300 Bolts
NAS 6600 Bolts
NAS 600 THRU 606 Screws
NAS 623 Screws
NAS 1351 Screws
NAS 1352 Screws
10-32
NAS6603
50
1/4-28
NAS6604
120
5/16-24
NAS6605
240
3/8-24
NAS6606
350
7/16-20
NAS6607
665
1/2-20
NAS6608
995
AN3 Bolts
AN4 Bolts
AN6 Bolts
AN8 Bolts
AN502 Screws
AN503 Screws
AN509 Screws
AN525 Screws
MS24694 Screws
MS27039 Screws
10-32
AN3
37
1/4-28
AN4
90
3/8-24
AN6
280
1/2-20
AN8
795
STAMPED NUTS
(PALNUTS)
10-32
B330-7 (MS27151-7)
6 to 15
1/4-28
B330-13 (MS27151-13)
11 to 25
5/16-24
B330-16 (MS27151-16)
20 to 40
3/8-24
B330-19 (MS27151-19)
29 to 60
7/16-20
B330-21 (MS27151-21)
42 to 85
1/2-20
B330-24 (MS27151-24)
54 to 110
TAPERED PIPE
THREADS
1/8-27
N/A
60
1/4-18
N/A
85
3/8-18
N/A
110
1/2-14
N/A
160
3/4-14
N/A
230
ROD END JAM NUTS
(AN315 and AN316)
10-32
AN315-3
15
1/4-28
AN316-4
40
5/16-24
AN316-5
80
3/8-24
AN316-6
110
1. Values include nut self-locking torque.
2. Increase values 10% if torqued at bolt head.
3. For elbow & tee fittings which require alignment, torque to indicated value then tighten to desired position.
4. Values ± 10% unless range is specified.
5. Unless otherwise noted, thread sizes 8-32 & smaller are not used for primary structure & do not require specific
torque.
Summary of Contents for RTR 660
Page 6: ...Intentionally Blank Page vi Introduction R66 Maintenance Manual SEP 2012...
Page 18: ...Intentionally Blank Page xviii Introduction R66 Maintenance Manual SEP 2012...
Page 20: ...Intentionally Blank Page 1 ii Chapter 1 General R66 Maintenance Manual SEP 2012...
Page 30: ...Intentionally Blank Page 1 10 Chapter 1 General R66 Maintenance Manual SEP 2012...
Page 42: ...Intentionally Blank Page 5 ii Chapter 5 Inspection Schedule R66 Maintenance Manual SEP 2012...
Page 54: ...Intentionally Blank Page 5 12 Chapter 5 Inspection Schedule R66 Maintenance Manual SEP 2012...
Page 90: ...Intentionally Blank Page 5 44 Chapter 5 Inspection Schedule R66 Maintenance Manual 25 OCT 2010...
Page 108: ...FIGURE 7 1 JACKING Page 7 2 Chapter 7 Jacking and Hoisting R66 Maintenance Manual SEP 2012...
Page 110: ...FIGURE 7 2 HOISTING Page 7 4 Chapter 7 Jacking and Hoisting R66 Maintenance Manual SEP 2012...
Page 114: ...Intentionally Blank Page 8 ii Chapter 8 Weight and Balance R66 Maintenance Manual 25 OCT 2010...
Page 118: ...Intentionally Blank Page 8 4 Chapter 8 Weight and Balance R66 Maintenance Manual SEP 2012...
Page 130: ...Intentionally Blank Page 9 ii Chapter 9 Ground Handling R66 Maintenance Manual 25 OCT 2010...
Page 154: ...Intentionally Blank Page 12 ii Chapter 12 Servicing R66 Maintenance Manual SEP 2012...
Page 160: ...FIGURE 12 3 TAIL ROTOR GEARBOX Page 12 6 Chapter 12 Servicing R66 Maintenance Manual SEP 2012...
Page 164: ...FIGURE 12 4 HYDRAULIC SYSTEM Page 12 10 Chapter 12 Servicing R66 Maintenance Manual SEP 2012...
Page 174: ...Intentionally Blank Page 12 20 Chapter 12 Servicing R66 Maintenance Manual SEP 2012...
Page 176: ...Intentionally Blank Page 18 ii Chapter 18 Track and Balance R66 Maintenance Manual SEP 2012...
Page 191: ...Intentionally Blank 25 OCT 2010 R66 Maintenance Manual Chapter 18 Track and Balance Page 18 15...
Page 236: ...Intentionally Blank Page 21 ii Chapter 21 Environment Control R66 Maintenance Manual SEP 2012...
Page 238: ...FIGURE 21 1 NOSE VENT Page 21 2 Chapter 21 Environment Control R66 Maintenance Manual SEP 2012...
Page 250: ...Intentionally Blank Page 21 14 Chapter 21 Environment Control R66 Maintenance Manual SEP 2012...
Page 252: ...Intentionally Blank Page 25 ii Chapter 25 Furnishings R66 Maintenance Manual SEP 2012...
Page 264: ...Intentionally Blank Page 25 12 Chapter 25 Furnishings R66 Maintenance Manual 25 OCT 2010...
Page 266: ...Intentionally Blank Page 28 ii Chapter 28 Fuel System R66 Maintenance Manual 25 OCT 2010...
Page 276: ...FIGURE 28 4 FUEL VALVE Page 28 10 Chapter 28 Fuel System R66 Maintenance Manual 25 OCT 2010...
Page 280: ...Intentionally Blank Page 32 ii Chapter 32 Landing Gear R66 Maintenance Manual SEP 2012...
Page 306: ...Intentionally Blank Page 52 ii Chapter 52 Doors and Windows R66 Maintenance Manual 25 OCT 2010...
Page 311: ...Intentionally Blank 25 OCT 2010 R66 Maintenance Manual Chapter 52 Doors and Windows Page 52 5...
Page 315: ...Intentionally Blank 25 OCT 2010 R66 Maintenance Manual Chapter 52 Doors and Windows Page 52 9...
Page 320: ...Intentionally Blank Page 53 ii Chapter 53 Fuselage R66 Maintenance Manual 25 OCT 2010...
Page 326: ...FIGURE 53 2 LOWER FRAMES Page 53 6 Chapter 53 Fuselage R66 Maintenance Manual 25 OCT 2010...
Page 344: ...Intentionally Blank Page 62 ii Chapter 62 Main Rotor R66 Maintenance Manual 25 OCT 2010...
Page 357: ...Intentionally Blank 25 OCT 2010 R66 Maintenance Manual Chapter 62 Main Rotor Page 62 13...
Page 388: ...Intentionally Blank Page 64 ii Chapter 64 Tail Rotor R66 Maintenance Manual 25 OCT 2010...
Page 402: ...Intentionally Blank Page 64 14 Chapter 64 Tail Rotor R66 Maintenance Manual 25 OCT 2010...
Page 418: ...Intentionally Blank Page 67 ii Chapter 67 Flight Controls R66 Maintenance Manual MAR 2012...
Page 446: ...Intentionally Blank Page 71 ii Chapter 71 Powerplant R66 Maintenance Manual SEP 2012...
Page 448: ...Page 71 2 Chapter 71 Powerplant R66 Maintenance Manual SEP 2012 FIGURE 71 1 ENGINE RIGHT SIDE...
Page 450: ...Page 71 4 Chapter 71 Powerplant R66 Maintenance Manual SEP 2012 FIGURE 71 2 ENGINE LEFT SIDE...
Page 456: ...FIGURE 71 3 INDUCTION Page 71 10 Chapter 71 Powerplant R66 Maintenance Manual SEP 2012...
Page 459: ...Intentionally Blank SEP 2012 R66 Maintenance Manual Chapter 71 Powerplant Page 71 13...
Page 460: ...FIGURE 71 4 EXHAUST Page 71 14 Chapter 71 Powerplant R66 Maintenance Manual SEP 2012...
Page 464: ...Intentionally Blank Page 71 18 Chapter 71 Powerplant R66 Maintenance Manual SEP 2012...
Page 468: ...Intentionally Blank Page 75 2 Chapter 75 Engine Air Systems R66 Maintenance Manual 25 OCT 2010...
Page 470: ...Intentionally Blank Page 76 ii Chapter 76 Engine Controls R66 Maintenance Manual 25 OCT 2010...
Page 478: ...Intentionally Blank Page 76 8 Chapter 76 Engine Controls R66 Maintenance Manual 25 OCT 2010...
Page 480: ...Intentionally Blank Page 79 ii Chapter 79 Engine Oil System R66 Maintenance Manual SEP 2012...
Page 490: ...Intentionally Blank Page 95 ii Chapter 95 Instrument System R66 Maintenance Manual 25 OCT 2010...
Page 498: ...Intentionally Blank Page 95 8 Chapter 95 Instrument System R66 Maintenance Manual 25 OCT 2010...
Page 500: ...Intentionally Blank Page 96 ii Chapter 96 Electrical System R66 Maintenance Manual SEP 2012...
Page 512: ...Intentionally Blank Page 96 12 Chapter 96 Electrical System R66 Maintenance Manual SEP 2012...
Page 514: ...Intentionally Blank Page 98 ii Chapter 98 Wiring Diagrams R66 Maintenance Manual SEP 2012...
Page 518: ...Page 98 4 Chapter 98 Wiring Diagrams R66 Maintenance Manual SEP 2012 Intentionally Blank...
Page 520: ...Intentionally Blank Page 98 6 Chapter 98 Wiring Diagrams R66 Maintenance Manual SEP 2012...
Page 522: ...Page 98 8 Chapter 98 Wiring Diagrams R66 Maintenance Manual SEP 2012 Intentionally Blank...
Page 524: ...Intentionally Blank Page 98 10 Chapter 98 Wiring Diagrams R66 Maintenance Manual SEP 2012...
Page 526: ...Intentionally Blank Page 98 12 Chapter 98 Wiring Diagrams R66 Maintenance Manual SEP 2012...
Page 528: ...Intentionally Blank Page 99 ii Chapter 99 Special Tools R66 Maintenance Manual 25 OCT 2010...
Page 532: ...FIGURE 99 2 SPECIAL TOOLS Page 99 4 Chapter 99 Special Tools R66 Maintenance Manual SEP 2012...
Page 534: ...Page 99 6 Chapter 99 Special Tools R66 Maintenance Manual SEP 2012 FIGURE 99 3 SPECIAL TOOLS...
Page 536: ...Intentionally Blank Page 100 ii Chapter 100 Revision Log R66 Maintenance Manual SEP 2012...