MacDon D65 Operator's Manual page 298

1. Ensure that the sealing surfaces and the fitting threads are
free of burrs, nicks, scratches, and any foreign material.
2. Apply hydraulic system oil to O-ring (B).
3. Align the tube or hose assembly so that the flat face of
sleeve (A) or (C) comes into full contact with O-ring (B).
4. Thread tube or hose nut (D) until it is hand-tight. The nut
should turn freely until it bottoms out.
5. Torque the fittings according to values in Table
278.
NOTE:
If applicable, hold the hex flange on fitting body (E) to
prevent the rotation of the fitting body and the hose when
tightening fitting nut (D).
6. Use three wrenches when assembling unions or joining two
hoses together.
7. Verify the final condition of the fitting.
Table 8.14 O-Ring Face Seal (ORFS) Hydraulic Fittings
SAE Dash Size
-3
-4
-5
-6
-8
-10
-12
-14
-16
60. Torque values and angles shown are based on lubricated connection as in reassembly.
61. O-ring face seal type end not defined for this tube size.
214327
8.14, page
Thread Size (in.) Tube O.D. (in.)
Note 61
9/16
Note 61
11/16
13/16
1
1 3/16
Note 61
1 7/16
REFERENCE
Figure 8.14: Hydraulic Fitting
A
B
Figure 8.15: Hydraulic Fitting
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
1
278
D
E
60
Torque Value
Nm
–
25–28 18–21
–
40–44 29–32
55–61 41–45
80–88 59–65
115–127 85–94
–
150–165 111–122
C
lbf·ft
–
–
–
Revision B