Case 2050M Operator's Manual page 163

Torque data for O-ring face seal fittings
Nominal Nominal tube OD
SAE dash
size
-4
-6
-8
-10
-12
-16
-20
-24
The values shown for O-ring boss ends are intended for steel fittings (with or without washers) with a cadmium and
chromate or a zinc and a chromate coating, assembled into a steel or grey iron housing.
6.350 mm
(0.250 in)
9.520 mm
(0.375 in)
12.700 mm
(0.500 in)
15.880 mm
(0.625 in)
19.050 mm
(0.750 in)
25.400 mm
(1.000 in)
31.750 mm
(1.250 in)
38.100 mm
(1.500 in)
7 - MAINTENANCE
O-ring Face Seal (ORFS)
Thread size
9/16-18
11/16-16
13/16-16
1-14
1-3/16-12
1-7/16-12
1-11/16-12
2-12
7-7
Torque values
23 - 26 N·m
(17 - 19 lb ft)
34 - 40 N·m
(25 - 30 lb ft)
52 - 57 N·m
(38 - 42 lb ft)
81 - 90 N·m
(60 - 66 lb ft)
117 - 128 N·m
(86 - 94 lb ft)
152 - 174 N·m
(112 - 128 lb ft)
179 - 201 N·m
(132 - 148 lb ft)
213 - 235 N·m
(157 - 173 lb ft)