5-20
5
SLEWING
TROUBLESHOOTING
1. Is the time needed for slewing within specifica-
tions?
“2. Service data, Performance criteria”
2. Check the pilot valve
“5-16”
3. Check the spool operation
“5-16”
4. Check the slew pressure
“5-16”
5. Check the check valve of the slew brake valve
“5-18”
6. Inspect the slew drive reduction gears
“4. Disassembly and assembly, Slew motor”
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