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1
5
BuckeT
TroubleshooTing
5g2AX00
buckeT
BuckeT
Bucket cylinder does not move or lacks force
1
check the operation of
actuators other than of
the bucket cylinder
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
Test by replacing the port
relief valve
Problem solved
The port relief valve is
faulty
repair or replace the port re-
lief valve
No change
5
check the bucket cylin-
der.
Faulty
repair or replace the bucket
cylinder
1. check the operation of actuators other than of the
bucket cylinder
Determine if only the bucket cylinder is faulty by check-
ing 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 systems
working, but insufficient force”
2. check the pilot valve
Disconnect the hose connecting the pilot valve and the
control valve (bucket block) from the control valve. Fit
the pressure gauge to the hose just disconnected.
• Operate the lever (bucket) and measure the pres
-
sure.
• If the pressure is between 0 and 3.4 MPa (0 to 493
PSI) depending on the lever angle, the pilot valve is
normal.
3. check the spool operation
Disconnect the bucket hose connected to the pipe at
the boom foot, then install a pressure gauge in the dis
-
connected hose.
• Operate the lever (bucket) and measure the pres
-
sure.
• If the measured value is within the specifications, the
spool is normal.
Supply pressure: 21.0 MPa (3046 PSI)
lever to operate
Device to check
relief valve
Pump
Right travel
r1
P1
Содержание TB215R
Страница 1: ...CC8E005 WETB215R_A XI Seral No 215000003...
Страница 3: ...SAFETY 1...
Страница 13: ...SERVICE DATA 2...
Страница 16: ...SERVICE DATA DIMENSIONAL DRAWING 3 2 DIMENSIONAL DRAWING 2A0AX001 Operating range 2A0AX02...
Страница 45: ...SERVICE DATA HYDRAULIC CIRCUIT DIAGRAM 1 2 HYDRAULIC CIRCUIT DIAGRAM 2F0AX001 HYDRAULIC CIRCUIT DIAGRAM...
Страница 51: ...SERVICE DATA ELECTRICAL CIRCUIT DIAGRAM 2 2 ELECTRICAL CIRCUIT DIAGRAM 2G0AX00 Electrical Schematic Diagram...
Страница 52: ...SERVICE DATA WIRE HARNESS DIAGRAM 1 2 WIRE HARNESS DIAGRAM 2H0AX00 WIRE HARNESS DIAGRAM Wiring diagram...
Страница 53: ...SERVICE DATA WIRE HARNESS DIAGRAM 2 2 WIRE HARNESS DIAGRAM 2H0AX00 Body harness 03342 68000...
Страница 54: ...SERVICE DATA WIRE HARNESS DIAGRAM 3 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 55: ...SERVICE DATA WIRE HARNESS DIAGRAM 4 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 56: ...SERVICE DATA WIRE HARNESS DIAGRAM 5 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 57: ...SERVICE DATA WIRE HARNESS DIAGRAM 6 2 WIRE HARNESS DIAGRAM 2H0AX00...
Страница 58: ...FUNCTION 3...
Страница 88: ...DISASSEMBLY AND ASSEMBLY 4...
Страница 90: ...DISASSEMBLY AND ASSEMBLY SERVICE STANDARDS 2 4 SERVICE STANDARDS 4A0AX00 Clearance for pin and bushing...
Страница 118: ...DISASSEMBLY AND ASSEMBLY UPPER FRAME 6 4 UPPER FRAME 4E0AX00 CANOPY Construction 1 Canopy 2 Roof...
Страница 120: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 1 4 OPERATING DEVICE 4F0AX00 OPERATING DEVICE Control levers Construction...
Страница 125: ...DISASSEMBLY AND ASSEMBLY OPERATING DEVICE 6 4 OPERATING DEVICE 4F0AX00 Hydraulic piping...
Страница 127: ...DISASSEMBLY AND ASSEMBLY ATTACHMENTS 1 4 ATTACHMENTS 4G0AX001 ATTACHMENTS Hoe attachment Construction...
Страница 130: ...DISASSEMBLY AND ASSEMBLY ATTACHMENTS 4 4 ATTACHMENTS 4G0AX001 34 Blade 35 Blade cylinder 36 Pin 37 Plate R 38 Plate L...
Страница 230: ......
Страница 232: ...TROUBLESHOOTING 5...
Страница 287: ...Other 6...