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169441
273
Revision D
Table 7.8
O-Ring Boss (ORB) Hydraulic Fittings
–
Non-Adjustable (continued)
SAE Dash Size
Thread Size (in.)
Torque Value
12
Nm
lbf·ft (*lbf·in)
-10
7/8
–
14
75
–
82
55
–
60
-12
1 1/16
–
12
120
–
132
88
–
97
-14
1 3/8
–
12
153
–
168
113
–
124
-16
1 5/16
–
12
176
–
193
130
–
142
-20
1 5/8
–
12
221
–
243
163
–
179
-24
1 7/8
–
12
270
–
298
199
–
220
-32
2 1/2
–
12
332
–
365
245
–
269
7.2.5
O-Ring Face Seal Hydraulic Fittings
The standard torque values are provided for O-ring face seal hydraulic fittings. If a procedure specifies a different torque
value for the same type and size of fitting found in this topic, refer to the value specified in the procedure instead.
Torque values are shown in the Table
1001376
Figure 7.9: Hydraulic Fitting
1.
Ensure that the sealing surfaces and the fitting threads are
free of burrs, nicks, scratches, and any foreign material.
1001377
A
B
C
D
E
Figure 7.10: Hydraulic Fitting
2.
Apply hydraulic system oil to O-ring (B).
3.
Align the tube or hose assembly so that the flat face of
sleeve (A) or (C) comes into full contact with O-ring (B).
4.
Thread tube or hose nut (D) until it is hand-tight. The nut
should turn freely until it bottoms out.
5.
Torque the fittings according to values in Table
NOTE:
If applicable, hold the hex flange on fitting body (E) to
prevent the rotation of the fitting body and the hose when
tightening fitting nut (D).
12.
Torque values shown are based on lubricated connections as in reassembly.
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