5o-ring boss (orb) hydraulic fittings, Table 2.10 flare-type hydraulic tube fittings, O-ring boss (orb) hydraulic fittings – MacDon HC10 for D-Series User Manual
Page 29
Table 2.10 Flare-Type Hydraulic Tube Fittings
Torque Value
1
Flats From Finger
Tight (FFFT)
SAE No.
Tube Size
O.D. (in.)
Thread
Size (in.)
Nut Size
Across
Flats (in.)
ft·lbf
N·m
Flats
Turns
3
3/16
3/8
7/16
6
8
1
1/6
4
1/4
7/16
9/16
9
12
1
1/6
5
5/16
1/2
5/8
12
16
1
1/6
6
3/8
9/16
11/16
18
24
1
1/6
8
1/2
3/4
7/8
34
46
1
1/6
10
5/8
7/8
1
46
62
1
1/6
12
3/4
1-1/16
1-1/4
75
102
3/4
1/8
14
7/8
1-3/8
1-3/8
90
122
3/4
1/8
16
1
1-5/16
1-1/2
105
142
3/4
1/8
2.1.5
O-Ring Boss (ORB) Hydraulic Fittings
1.
Inspect O-ring (D) and seat (F)for dirt or obvious
defects.
2.
On angle fittings, back off the lock nut (B) until washer
(C) bottoms out at top of groove (E) in fitting (A).
3.
Hand-tighten fitting until back up washer (C) or washer
face (if straight fitting) bottoms on part face (G) and
O-ring is seated.
4.
Position angle fittings by unscrewing NO MORE THAN
one turn.
5.
Tighten straight fittings to torque shown.
6.
Tighten angle fittings to torque shown in table
O-Ring Boss (ORB) Hydraulic Fittings (Adjustable),
page 22
, while holding body of fitting with a wrench.
Figure 2.6
A - Fitting
B - Lock Nut
C - Washer
D - O-Ring
E - Groove
F - Seat
1.
Torque values shown are based on lubricated connections as in reassembly.
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21
Rev. D