Ventrac 4520P - Page 91

Installing the Hydraulic Fittings (SAE Straight Thread
O-Ring Fittings) (continued)
Fitting Installation Torque Table
Fitting Dash Size Fitting Port Side
Thread Size (inch)
—threads per inch
Installation Torque
Into Steel Port
Installation Torque
Into Aluminum Port
4 7/16—20 21 to 25 N∙m (15 to
19 ft-lb)
13 to 15 N∙m (9 to 11
ft-lb)
5 1/2—20 25 to 29 N∙m (18 to
22 ft-lb)
15 to 20 N∙m (11 to
15 ft-lb)
6 9/16—18 47 to 56 N∙m (34 to
42 ft-lb)
28 to 35 N∙m (20 to
26 ft-lb)
8 3/4—16 79 to 97 N∙m (58 to
72 ft-lb)
48 to 58 N∙m (35 to
43 ft-lb)
10 7/8—14 135 to 164 N∙m (99
to 121 ft-lb)
82 to 100 N∙m (60 to
74 ft-lb)
12 1–1/16—12 182 to 222 N∙m (134
to 164 ft-lb)
110 to 134 N∙m (81
to 99 ft-lb)
14 1–3/16—12 217 to 265 N∙m (160
to 196 ft-lb)
131 to 160 N∙m (96
to 118 ft-lb)
16 1–5/16—12 274 to 336 N∙m (202
to 248 ft-lb)
165 to 202 N∙m (121
to 149 ft-lb)
20 1–5/8—12 335 to 410 N∙m (247
to 303 ft-lb)
202 to 248 N∙m (149
to 183 ft-lb)
Flats From Finger Tight (FFFT) Table
Size FFFT
4 (1/4 inch nominal hose or tubing) 1.00 ± 0.25
6 (3/8 inch) 1.50 ± 0.25
8 (1/2 inch) 1.50 ± 0.25
10 (5/8 inch) 1.50 ± 0.25
12 (3/4 inch) 1.50 ± 0.25
16 (1 inch) 1.50 ± 0.25
4520P Page 5–15 Hydraulic System: Hydraulic Hoses
09.40003Rev 00