Manitowoc Grove GMK 5200-1, Maintenance Manual

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Maintenance work on the superstructure
8.7 Main boom
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3.
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Maintenance manual 3 302 746 en 8 - 47
GMK5200-1
8.7 Main boom
8.7.1 Greasing the piston rod of the derricking cylinder
Grease, spare
parts and tools
– Brush.
•
Clean the uncovered end ( 1 ) of the piston
rod by removing old grease, dirt particles
and rust.
•
Grease the uncovered end, making sure the
grease coating is evenly distributed.
After every high-pressure cleaning operation
on the truck crane
•
Grease the piston rod.
H
You can hinder the formation of rust if you turn the main boom to the side
between maintenance intervals and completely lower it.
M 1
Designation GROVE part no.
Lubricant RHUS SW 2; 1 kg
(Apply the grease with a brush) 03325215
or
Spray on Berulub; 0.5 litres
(spray-on) 01929824
S
Risk of damage to the derricking cylinder's gasket due to rust.
Ensure that the uncovered end of the piston rod is always kept covered with
a layer of grease. In this way you can avoid rust which damages the seal in
the derricking cylinder head when fully lowered.