215651
278
Revision B
Table 9.10
Flare-Type Hydraulic Tube Fittings (continued)
SAE Dash Size
Thread Size (in.)
Torque Value
81
Flats from Finger Tight (FFFT)
Nm
lbf·ft
Tube
Swivel Nut or
Hose
-6
9/16
–
18
30
–
33
22
–
24
2
1 1/2
-8
3/4
–
16
57
–
63
42
–
46
2
1 1/2
-10
7/8
–
14
81
–
89
60
–
66
1 1/2
1 1/2
-12
1 1/16
–
12
113
–
124
83
–
91
1 1/2
1 1/4
-14
1 3/16
–
12
136
–
149
100
–
110
1 1/2
1 1/4
-16
1 5/16
–
12
160
–
176
118
–
130
1 1/2
1
-20
1 5/8
–
12
228
–
250
168
–
184
1
1
-24
1 7/8
–
12
264
–
291
195
–
215
1
1
-32
2 1/2
–
12
359
–
395
265
–
291
1
1
-40
3
–
12
—
—
1
1
9.1.5
O-Ring Boss Hydraulic Fittings
–
Adjustable
The standard torque values are provided for adjustable hydraulic fittings. If a procedure specifies a different torque value
for the same type and size of fitting found in this topic, use the value specified in the procedure instead.
$
%
&
'
Figure 9.11: Hydraulic Fitting
1.
Inspect O-ring (A) and seat (B) for dirt or obvious defects.
2.
Back off lock nut (C) as far as possible. Ensure that
washer (D) is loose and is pushed toward lock nut (C) as far
as possible.
3.
Check that O-ring (A) is
NOT
on the threads. Adjust O-
ring (A) if necessary.
4.
Apply hydraulic system oil to O-ring (A).
81. Torque values shown are based on lubricated connections as in reassembly.
