MacDon D50 - O-Ring Boss Hydraulic Fittings - Non-Adjustable

169441 272 Revision D
Table 7.7 O-Ring Boss (ORB) Hydraulic Fittings – Adjustable (continued)
SAE Dash Size
Thread Size (in.)
Torque Value
11
Nm
lbf·ft (*lbf·in)
-4
7/16–20
19–21 14–15
-5
1/2–20
21–33 15–24
-6
9/16–18
26–29 19–21
-8
3/4–16
46–50 34–37
-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
7.2.4 O-Ring Boss Hydraulic Fittings – Non-Adjustable
The standard torque values for non-adjustable hydraulic fittings are provided. 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.
1004663
A
B
C
Figure 7.8: Hydraulic Fitting
1. Inspect O-ring (A) and seat (B) for dirt or defects.
2. Ensure that O-ring (A) is NOT on the threads. Adjust
O-ring (A) if necessary.
3. Apply hydraulic system oil to the O-ring.
4. Install fitting (C) into the port until the fitting is hand-tight.
5. Torque fitting (C) according to values in Table 7.8, page
272.
6. Verify the final condition of the fitting.
Table 7.8 O-Ring Boss (ORB) Hydraulic Fittings – Non-Adjustable
SAE Dash Size
Thread Size (in.)
Torque Value
11
Nm
lbf·ft (*lbf·in)
-2
5/16–24
6–7 *53–62
-3
3/8–24
12–13 *106–115
-4
7/16–20
19–21 14–15
-5
1/2–20
21–33 15–24
-6
9/16–18
26–29 19–21
-8
3/4–16
46–50 34–37
REFERENCE
11. Torque values shown are based on lubricated connections as in reassembly.