5o-ring boss (orb) hydraulic fittings, Table 8.10 flare-type hydraulic tube fittings, O-ring boss (orb) hydraulic fittings – MacDon R85 Rotary Disc 16 Foot Pull-Type User Manual
Page 142
Table 8.10 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
8.3.5 O-Ring Boss (ORB) Hydraulic Fittings
1. Inspect O-ring and seat for dirt or obvious defects.
2. On angle fittings, back off the lock nut until washer (A)
bottoms out at top of groove (B) in fitting.
3. Hand-tighten fitting until back up washer (A) or washer
face (if straight fitting) bottoms on part face (C) 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 the following
table, while holding body of fitting with a wrench.
Figure 8.9
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.
169456
132
Rev. D