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MAINTENANCE
High-Strength Bolt Connections (continued)
Roof-mounted service crane
Check condition and fastening of crane base and crane
Legend for illust. Z 22635
(1)
Crane base
(2)
Slew crane
(3)
Outrigger
(4)
Electric chain hoist or hydraulic rope winch
(5)
Safety hook
(6)
Electric -.hydraulic power unit
Reference No.:
(7)
(8)
(9)
(10)
* SW Wrench size
Re-tighten loose mounting bolts and replace missing bolts.
Replace self locking nuts which have lost their clamping
torque.
REMARK
For more information concerning crane maintenance refer to
the separate Instruction Manual "MKG CRANE HMK 60 Ta1" filed
in volume 2 binder.
Bolt size
Grade
mm
M24
10.9
M20
10.9
M20
10.9
M12
8.8
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
SW *
Tightening torque
mm
Nm
36
880
30
510
30
510
19
74
Qty.
8
10
2
16
461
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