TROUBLESHOOTING
BOOM SWING
1
5
BOOM SWING
5G3AX00
BOOM SWING
Swing cylinder does not move.
1. Check the operation of actuators other than of the
swing cylinder.
Determine if only the boom swing cylinder 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. Troubleshooting, Overall machine, All sys-
tems working, but insufficient force”
2. Check the spool operation.
• Spool stroke: 7 mm (0.3. in.)
• If the spool is sticking, try to take it out.
If it can’t be taken out or is scratched, replace the
housing block.
Note that the faulty spool operation could be
caused by the loosened bolt used for the return
spring.
1
Check the operation of
actuators other than of
the swing cylinder.
Normal
2
Check the spool opera-
tion.
Faulty
Repair or replace the housing
block.
Normal
3
Check the linkage.
Faulty
Adjust, repair or replace.
Normal
4
Check the anti-cavitation
valve.
Faulty
Repair or replace the anti-
cavitation valve.
Normal
5
Check the swing cylin-
der.
Faulty
Repair or replace the swing
cylinder.
Lever to operate
Device to check
Relief valve
Pump
Right travel
R2
P2
5G3AF01Z
5G3AX001
Summary of Contents for TB215R
Page 1: ...CC8E005 WETB215R_A XI Seral No 215000003...
Page 3: ...SAFETY 1...
Page 13: ...SERVICE DATA 2...
Page 16: ...SERVICE DATA DIMENSIONAL DRAWING 3 2 DIMENSIONAL DRAWING 2A0AX001 Operating range 2A0AX02...
Page 53: ...SERVICE DATA WIRE HARNESS DIAGRAM 2 2 WIRE HARNESS DIAGRAM 2H0AX00 Body harness 03342 68000...
Page 54: ...SERVICE DATA WIRE HARNESS DIAGRAM 3 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 55: ...SERVICE DATA WIRE HARNESS DIAGRAM 4 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 56: ...SERVICE DATA WIRE HARNESS DIAGRAM 5 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 57: ...SERVICE DATA WIRE HARNESS DIAGRAM 6 2 WIRE HARNESS DIAGRAM 2H0AX00...
Page 58: ...FUNCTION 3...
Page 88: ...DISASSEMBLY AND ASSEMBLY 4...
Page 125: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 6 4 OPERATING DEVICE 4F0AX00 Hydraulic piping...
Page 230: ......
Page 232: ...TROUBLESHOOTING 5...
Page 287: ...Other 6...