Takeuchi TB 250 - No Slewing Is Possible

5-15
5
SLEWING
TROUBLESHOOTING
SLEWING
No slewing is possible
1
Check the operation of
actuators other than of
the slew motor
Normal
2 Check the pilot valve
Faulty
Repair or replace the pilot
valve
Normal
3
Check the spool opera-
tion
Faulty
Repair or replace the housing
block
Normal
4 Check the slew pressure
Pressure too low
Adjust the pressure of the
slew relief valve
Adjust to the set pressure
Normal
Pressure does not rise
Repair or replace the relief
valve
5 Check the slew motor
Faulty
Repair or replace the slew
motor
Normal
Slew bearing is faulty Replace
1. Check the operation of actuators other than of the
slew motor
Determine if only the slew motor is faulty by checking
the operation of actuators for the devices listed in the
table on the right. If one of them is faulty, check the
main relief valve and the hydraulic pump (main).
“5-5”
Lever to operate
Device to check
Relief valve Pump
Blade R3 P3