D. Force Forming Gearshaft Assembly Retainer Rings ............................................................ 507
5. Torque Requirements .................................................................................................................. 509
A. General Torque Requirements..............................................................................................509
B. Procedure -Preparing and Installing Fasteners (Standard Shop Practice)..........................511
C. Guideline -Assembly Torque Values (Nuts, Bolts, Screws, Studs, and Inserts).................. 515
D. Procedure -Preparing and Installing Fluid and Gasketed Fittings, and Special Metal and Conical Seals for Tubing and Hose Fittings. ......................................................................... 518
E. Procedure -Preparing and Installing O-rings on Fittings ...................................................... 525
F. Procedure -Preparing and Installing Universal Fittings........................................................526
G. Procedure -Preparing and Installing Bulkhead Fittings........................................................527
6. Lockwire Installation and Techniques..........................................................................................528
A. General..................................................................................................................................528
B. Lockwiring Examples.............................................................................................................528
7. Cotter Pins and Key Washers......................................................................................................530
A. Cotter Pin Installation ............................................................................................................ 530
B. Cotter Key Installation ........................................................................................................... 531
8. Marman Clamps........................................................................................................................... 532
A. Marman Clamp (Coupling) Installation..................................................................................532
Assembly
Page TC-1 Apr 1/05
20-00-02/70-00-01
TABLE PAGE
Table 501. Recommended Lubricants.............................................................................................. 502
Table 502. Standard Torque Values for Flared Tubing Fittings Used with Conical Seals ............... 506
Table 503. Approved Anti-seize Lubricants ...................................................................................... 509
Table 504. Appropriate Rotation for Final Torque ............................................................................ 512
Table 505. Bolts and Nuts with Metal-to-Metal Faying Surfaces......................................................513
Table 506. Minimum Torque in Inch-Pounds....................................................................................514
Table 507. Examples - 77,500 psi Thread Root Stress.................................................................... 516
Table 508. Examples - 62,000 psi Thread Root Stress.................................................................... 516
Table 509. Examples - 41,875 psi Thread Root Stress.................................................................... 517
Table 510. Flared Tubing and Hose Fittings Tightening Specifications ........................................... 520
Table 511. Gasketed Fittings in Low Temperature Alloys - EZ33A-T5 ............................................ 521
Table 512. Gasketed Fittings in Low Temperature Alloys - AZ91G-T6............................................522
Table 513. Dynamic Beam Seal Tubing and Fittings........................................................................ 523
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