Manitowoc Published 05-03-17, Control # 228-03 2-11
16000 SERVICE/MAINTENANCE MANUAL HYDRAULIC SYSTEM
ORS Connection
NOTE: ORS is the registered trade mark for a face-type
seal manufactured by Aeroquip Corporation.
To maintain an ORS fitting, use the following procedure:
1. Lubricate and install the o-ring in the adapter groove
(Figure 2-9
).
2. Lubricate the threads.
3. Tighten the nut to the torque value given in Table 2-4
.
Table 2-4
ORS Assembly Torque
Table 2-5
ORS Fitting Troubleshooting
Nut
Adapter
O-Ring
FIGURE 2-9
S105
Nut Size
inch
across flats
Fitting
Size
Torque
Nm In-Lb
5/8 -04 120 to 145 14 to 16
13/16 -06 203 to 245 23 to 28
15/16 -08 380 to 470 43 to 53
1-1/8 -10 550 to 680 62 to 77
1-3/8 -12 763 to 945 86 to 107
1-5/8 -16 1110 to 1260 125 to 142
1-7/8 -20 1500 to 1680 170 to 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.
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