Manitowoc Published 05-26-17, Control # 238-02 2-21
MLC165-1 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
ORS Connection
NOTE ORS is the registered trade mark for a face-type
seal manufactured by Aeroquip Corporation.
1. Lubricate and install the O-ring into the adapter groove
(Figure 2-21
).
2. Lubricate the threads.
3. Tighten the nut to the torque value given in Table 2-5
.
Table 2-5 ORS Assembly Torque
Table 2-6 ORS Connection Repair
Nut
Adapter
O-Ring
Figure 2-21. ORS Connection
S105
Nut Size
Across Flats
in (mm)
Fitting
Size
Torque
In-Lb Nm
5/8 (15,9) -04 120 – 145 14 – 16
13/16 (20,7) -06 203 – 245 23 – 28
15/16 (23,8) -08 380 – 470 43 – 53
1-1/8 (28,6) -10 550 – 680 62 – 77
1-3/8 (34,9) -12 763 – 945 86 – 107
1-5/8 (41,3) -16 1110 – 1260 125 – 142
1-7/8 (47,6) -20 1500 – 1680 170 – 190
Causes Cures
Nut Loose Tighten to proper torque
O-ring cut Replace
O-ring wrong size Replace with proper size
Sealing surfaces gouged or
scratched
Repair if possible or
replace damaged parts
Sealing surfaces dirty Clean and lubricate