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5
SLEWING
TROUBLESHOOTING
4. Check the check valve of the slew brake valve
If foreign matter is caught in one of the check valves
(1), or if the valve is sticking, right or left slewing does
not work.
• If foreign matter is caught in one of the check valves,
the hydraulic oil returns from the check valve to the
tank.
5. The slew motor is faulty
“4. Disassembly and assembly, Slew motor”
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