O-Ring Boss (Orb) Hydraulic Fittings (Non-Adjustable) - MacDon M1170 Operator's Manual

8.1.4 O-Ring Boss (ORB) Hydraulic Fittings (Non-Adjustable)

1. Inspect O-ring (A) and seat (B) for dirt or obvious defects.
2. Check that O-ring (A) is NOT on threads and adjust if
necessary.
3. Apply hydraulic system oil to O-ring.
4. Install fitting (C) into port until fitting is hand-tight.
5. Torque fitting (C) according to values in Table
422.
6. Check final condition of fitting.
Table 8.7 O-Ring Boss (ORB) Hydraulic Fittings (Non-Adjustable)
SAE Dash Size
-2
-3
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
-32
21. Torque values shown are based on lubricated connections as in reassembly.
214733
REFERENCE
8.7, page
Thread Size (in.)
5/16–24
3/8–24
7/16–20
1/2–20
9/16–18
3/4–16
7/8–14
1-1/16–12
1-3/8–12
1-5/16–12
1-5/8–12
1-7/8–12
2-1/2–12
422
C
Figure 8.8: Hydraulic Fitting
Torque Value
Nm
6–7
12–13
19–21
21–33
26–29
46–50
75–82
120–132
153–168
176–193
221–243
270–298
332–365
A
B
21
lbf·ft (*lbf·in)
*53–62
*106–115
14–15
15–24
19–21
34–37
55–60
88–97
113–124
130–142
163–179
199–220
245–269
Revision A