TM 5-3895-379-23-2
0284
GENERAL TORQUE VALUES - Continued
37 Degree Flare and 30 Degree Cone Seat Connectors Service Recommendations - Continued
Table 6. Straight Fitting or Special Nut Torque Values - Continued.
Thread Size
lb-ft
Nm
3/4 - 16 UNF
34
46
7/8 - 14 UNF
46
62
1-1/16 - 12 UN
75
102
1-3/16 - 12 UN
90
122
1-5/16 - 12 UN
105
142
1-5/8 - 12 UN
140
190
1-7/8 - 12 UN
160
217
Torque tolerance is 10% unless otherwise specified.
O-Ring Boss Fittings Service Recommendations
1.
Inspect fitting (Figure 14, Item 1) and O-ring boss sealing surfaces and O-ring (Figure 14, Item 2). They must
be free of dirt, scratches, nicks, or burrs. O-ring must be free of dirt, cuts, cracks, swelling or flatten condition.
1
2
4
6
5
2
3
3
M1329SWR
Figure 14. O-Ring Boss Straight and Adjustable Fittings.
2.
Back the stud end (Figure 14, Item 3) hex nut (Figure 14, Item 4) off as far as possible. Push backup washer
(Figure 14, Item 5) towards the nut to fully expose the turn down section of stud end. Washer must fit turned
down section and not be too loose.
3.
Wrap electrical tape over threads to protect O-ring. Slide O-ring over the tape into turned down section. Remove
tape. Apply appropriate lubricant to the threads of stud end, turned down section, and O-ring.
4.
Turn fitting into the boss by hand until face of nut or backup washer squeezes O-ring into the seat and contacts
face of boss. Loosen an adjustable fitting (Figure 14, Item 6) no more than one turn for alignment.
5.
Tighten straight fitting or hex nut to the torque value given. Hold body of adjustable fitting using a second
wrench when tightening hex nut.
03/15/2011Rel(1.8)root(torquewp)wpno(M00222)