Gehl RT175 Operator's Manual page 178

Hydraulic fittings with various seals (heavy application). All torque values are in Nm (lb.-ft.) unless marked otherwise.
Straight pipe fitting with thread and screwed plug (GE)
Thread
Sealing washer
M12X1.5 20 (15)
M14X1.5 35 (26)
M16X1.5 45 (33)
M18X1.5 55 (41)
M20X1.5 55 (41)
M22X1.5 65 (48)
M27X2.0 90 (66)
M33X2.0 150 (111)
M42X2.0 240 (177)
M48X2.0 290 (214)
G1/8A 35 (26)
G1/4A 45 (33)
G3/8A 65 (48)
G1/2A 90 (66)
G3/4A 150 (111)
G1A 240 (177)
G1 1/4A 290 (214)
918468/EP0313
Elastic seal O-ring
35 (26) 35 (26)
55 (41) 45 (33)
70 (52) 55 (41)
90 (66) 70 (52)
125 (92) 80 (59)
135 (100) 100 (74)
180 (133) 170 (125)
310 (229) 310 (229)
450 (332) 330 (243)
540 (398) 420 (310)
55 (41) 45 (33)
80 (59) 60 (44)
115 (85) 75 (55)
180 (133) 170 (125)
310 (229) 310 (229)
450 (332) 330 (243)
540 (398) 420 (310)
Non-return valve Identification aid out-
with elastic seal side Ø
35 (26) 12 mm (0.5 in.)
45 (33) 14 mm (0.6 in.)
55 (41) 16 mm (0.6 in.)
70 (52) 18 mm (0.7 in.)
100 (74) 20 mm (0.8 in.)
125 (92) 22 mm (0.9 in.)
135 (100) 27 mm (1.0 in.)
210 (155) 33 mm (1.3 in.)
360 (266) 42 mm (1.7 in.)
540 (398) 48 mm (1.9 in.)
45 (33) 13.16 mm (0.5 in.)
60 (44) 16.66 mm (0.7 in.)
100 (74) 20.96 mm (0.8 in.)
145 (107) 26.44 mm (1.0 in.)
260 (192) 33.25 mm (1.3 in.)
360 (266) 41.91 mm (1.7 in.)
540 (398) 47.80 mm (1.9 in.)
Printed in U.S.A.