MacDon FD75 OM User Manual
Page 267
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 the threads, adjust
if necessary.
3.
Apply hydraulic system oil to the O-ring.
4.
Install fitting (C) into port until fitting is hand tight.
5.
Torque fitting (C) per value in chart.
Refer to
Table
6.12 O-Ring Boss (ORB) Hydraulic Fittings
.
6.
Check the final condition of the fitting.
Figure 6.13: Hydraulic Fitting
Table 6.12 O-Ring Boss (ORB) Hydraulic Fittings (Non-Adjustable)
Torque Value
5
SAE Dash Size
Thread Size (in.)
ft·lbf (*in·lbf)
N·m
-3
3/8-24
*106–115
12–13
-4
7/16–20
14–15
19–21
-5
1/2–20
15–24
21–33
-6
9/16–18
19–21
26–29
-8
3/4–16
34–37
46–50
-10
7/8–14
55–60
75–82
-12
1-1/16-12
88–97
120–132
-14
1-3/8-12
113–124
153–168
-16
1-5/16-12
130–142
176–193
-20
1-5/8-12
163–179
221–243
-24
1-7/8-12
199–220
270–298
5.
Torque values shown are based on lubricated connections as in reassembly.
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Revision A