214713
213
Revision A
11.6.4
Flare-Type Hydraulic Fittings
1003430
A
C
D
B
E
Figure 11.17: Hydraulic Fitting
1.
Check flare (A) and flare seat (B) for defects that might
cause leakage.
2.
Align tube (C) with fitting (D) and thread nut (E) onto
fitting without lubrication until contact has been made
between flared surfaces.
3.
Torque fitting nut (E) to specified number of flats from
finger tight (FFFT) or to a given torque value in
Table
.
4.
Use two wrenches to prevent fitting (D) from rotating.
Place one wrench on fitting body (D), and tighten
nut (E) with other wrench to torque shown.
5.
Assess final condition of connection.
Table 11.11 Flare-Type Hydraulic Tube Fittings
SAE Dash Size
Thread Size (in.)
Torque Value
5
Flats from Finger Tight (FFFT)
Nm
lbf·ft
Tube
Swivel Nut or
Hose
-2
5/16
–
24
4
–
5
3
–
4
—
—
-3
3/8
–
24
7
–
8
5
–
6
—
—
-4
7/16
–
20
18
–
19
13
–
14
2-1/2
2
-5
1/2
–
20
19
–
21
14
–
15
2
2
-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
5.
Torque values shown are based on lubricated connections as in reassembly.
Содержание R116
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