MacDon FD75, Operator'S Manual

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542
Revision B
9.1.6 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 9.13: 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 9.12, page
542 .
6. Verify the final condition of the fitting.
Table 9.12 O-Ring Boss (ORB) Hydraulic Fittings
–
Non-Adjustable
SAE Dash Size
Thread Size (in.)
Torque Value 46
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
-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
9.1.7 O-Ring Face Seal Hydraulic Fittings
The standard torque values are provided for O-ring face seal hydraulic fittings. If a procedure specifies a different torque
value for the same type and size of fitting found in this topic, refer to the value specified in the procedure instead.
Torque values are shown in the Table 9.13, page 543 .
REFERENCE
46. Torque values shown are based on lubricated connections as in reassembly.