1
Is the time needed for
Within specs
Normal
Slow
2 Check the pilot valve
Faulty
Repair or replace the pilot
valve
Normal
Check the spool opera-
tion
Faulty
block
Normal
4 Check the slew pressure
Adjust the slew relief valve
pressure
Adjust to set pressure
Normal
Repair or replace the relief
valve
5 Check the slew motor
Faulty
Repair or replace the slew
motor
Normal
Replace
1. Is the time needed for slewing within specifica-
tions?
2. Check the pilot valve
3. Check the spool operation
-
eration”
4. Check the slew pressure
-
sure”
5. Check the slew motor
“4. Disassembly and assembly, Slew motor”