Maintenance work on the superstructure
8.5 Slewing bearing
09.03.2018
Maintenance manual 3 302 746 en 8 - 21
GMK5200-1
8.5 Slewing bearing
8.5.1 Checking the screws
• Comply also with the à Run-in regulations, p. 4 - 1.
Tools – Torque wrench.
– Auxiliary tools for the torque wrench; à p. 8 - 23.
Prerequisites – No counterweight has been rigged; à Operating manual.
– The crane must be rigged with an outrigger span of at least 8.95 x 7.80 m
(29.4x25.6ft) and be level;
à Operating manual.
– In addition, the tyres on the 3
rd
and 4
th
axle lines must be removed to
improve the freedom of movement under the slewing bearing.
– The main boom must be fully retracted and raised to 75°; à Operating
manual
.
– The current load must not exceed 1 t (2,200 lbs) – where necessary
unreeve the hook block.
– The slewing range 360° around the truck crane must be secured.
– The engine must be switched off and secured against unauthorised use;
à p. 2 - 3.
Safety
instructions
s
S
Risk of damage to the screws on the slewing bearing.
All screws were tightened at the factory with a certain torque, and this
should be checked during maintenance. Only slight tightening of the
screws is permissible, if required.
You may not slacken the screws and re-tighten them, or completely
unscrew and then reuse them.
If the superstructure has to be removed from the carrier, only a completely
new set of screws may be used to reinstall the superstructure. Only original
screws should be used, which were manufactured according to the factory
specifications.
To Next Page
Loading...
