Slewing Bearing; Checking The Screws - Manitowoc Grove GMK 5200-1 Maintenance Manual

8.5
8.5.1
Tools
Prerequisites
Safety
instructions
S
Maintenance manual
GMK5200-1

Slewing bearing

Checking the screws

•
Comply also with the
– Torque wrench.
– Auxiliary tools for the torque wrench;
– No counterweight has been rigged;
– The crane must be rigged with an outrigger span of at least 8.95 x 7.80 m
(29.4 x 25.6 ft) and be level;
– In addition, the tyres on the 3
improve the freedom of movement under the slewing bearing.
– The main boom must be fully retracted and raised to 75°;
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.
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.
à
Run-in regulations , p. 4 - 1.
à
à
à
Operating manual .
rd th
and 4
3 302 746 en
Maintenance work on the superstructure
8.5 Slewing bearing
p. 8 - 23.
Operating manual .
axle lines must be removed to
à
M 3
Operating
s
8 - 21