Driving modes and rigging for on-road driving
6.4 Rigging the main boom
Operating manual 3 302 709 en 6 - 29
GMK5150L
12.01.2018
6.4.6 Switching the pressure relief on/off
Pressure relief prevents the derricking cylinder from extending when the
engine runs, after the main boom has been removed.
When removing
• Switch the pressure relief on before pulling the derricking cylinder head
axle.
When installing
• Only switch off the pressure relief after fitting the derricking cylinder head
axle.
• Remove the lock (2).
– (A) – Switching on
• Switch over valve I – lever (1) upwards.
– (B) – Switching off
• Switch over valve I – lever (1) horizontal
and pointing outward.
• Secure the lever with the lock (2) and
remove the key.
H
When the pressure relief is switched on, the main boom cannot be raised.
G
Risk of accident from falling boom
Check to see whether the main boom is in the boom rest before switching
off the pressure relief.
This prevents the raised main boom from dropping down.
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