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5.3. DRIFTING OF BOOM OR OUTRIGGERS
FAULT
REMEDY
13. Boom drifts slowly downward
The “load regulation valve”, i.e. the pressure
activated check valve, is leaking.
Remove and clean the valve.
Check the condition of the o-rings.
Install the valve carefully – the correct tightening
torque is 60 Nm.
If necessary, replace the valve.
14. Telescopic movement retracts slowly
Load regulation valve is leaking.
For remedy, refer to item 13. (Load holding valve)