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Table 6.8 O-Ring Boss (ORB) Hydraulic Fittings – Adjustable and Non-Adjustable
SAE Dash Size
-2
-3
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
-32
6.4.4 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.
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
245.
6. Verify the final condition of the fitting.
Table 6.9 O-Ring Boss (ORB) Hydraulic Fittings – Adjustable and Non-Adjustable
SAE Dash Size
-2
-3
-4
-5
7.
Torque values shown are based on lubricated connections as in reassembly.
262177
REFERENCE
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 3/16–12
1 5/16–12
1 5/8–12
1 7/8–12
2 1/2–12
6.9, page
Thread Size (in.)
5/16–24
3/8–24
7/16–20
1/2–20
245
Torque Value
Nm
10–11
18–20
29–32
32–35
40–44
70–77
115–127
183–201
237–261
271–298
339–373
414–455
509–560
C
Figure 6.10: Hydraulic Fitting
Torque Value
Nm
10–11
18–20
29–32
32–35
7
lbf·ft (*lbf·in)
*89–97
*159–177
21–24
24–26
30–32
52–57
85–94
135–148
175–193
200–220
250–275
305–336
375–413
A
B
7
lbf·ft (*lbf·in)
*89–97
*159–177
21–24
24–26
Revision A
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