SUNWARD SWE20F 2019 - Page 91

89
Slewing platform don’t
slew, slew slowly, or slew
not smoothly.
1．Correspond
ing pilot valve
malfunction
2．
Hydraulic motor
malfunction
3．
Slewing retarder
malfunction
4．
Slewing bearing
malfunction
5．
Need to add lubricant
grease into the slewing
bearing.
1．Repair
2．Consult with your dealer
3．Consult with your dealer
4．Repair
5．Add lubricant grease