Ors Connection - Manitowoc 999 Service And Maintenance Manual

999 SERVICE/MAINTENANCE MANUAL

ORS Connection

• Lubricate and install
(Figure 2-5).
• Lubricate threads.
• Tighten nut to torque value given in
S105
Nut
O-Ring
Table 2-4. ORS Assembly Torque
Nut Size
Fitting
inch across
Size
flats
5/8 -04
13/16 -06
15/16 -08
1-1/8 -10
1-3/8 -12
1-5/8 -16
1-7/8 -20
Manitowoc
O-ring in adapter groove
Table 2-4..
Adapter
FIGURE 2-5
Torque
In-Lb N•m
120 – 145 14 – 16
203 – 245 23 – 28
380 – 470 43 – 53
550 – 680 62 – 77
763 – 945 86 – 107
1110 – 1260 125 – 142
1500 – 1680 170 – 190
Published 05-16-17, Control # 233-03
Table 2-5. ORS Leakage
Causes
Nut Loose.
O-ring cut.
O-ring wrong size.
Sealing surfaces gouged
or scratched.
Sealing surfaces dirty.
HYDRAULIC SYSTEM
Cures
Tighten to proper torque.
Replace.
Replace with proper size.
Repair if possible or replace
damaged parts.
Clean and lubricate.
2-9
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