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MAINTENANCE
High-Strength Bolt Connections (continued)
Check fastening and condition of control valve carrier (01),
main control valves (04 - 06) and hose support (02),
illustration Z20861
* SW = Wrench size
Reference
Bolt size
No.:
(17)
M12
(19)
M16
(20)
M16
(30)
M20
Check all mounting bolts (17, 19, 20 and 30) for correct tight-
ening torque.
Re-tighten loose mounting bolts and replace missing or dam-
aged bolts.
SW *
Grade
mm
mm
8.8
19
8.8
24
8.8
24
10.9
30
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
Tightening
Qty.
torque Nm
74
8
179
6
179
3
510
4
355
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