1
5
arm
TroubleshooTing
5g1AX00
Arm
arm
Arm cylinder does not move
1
check the operation of
actuators other than of
the arm 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 arm cylinder.
Faulty
repair or inspect the arm cyl-
inder
1. check the operation of actuators other than of the
arm cylinder
Determine if only the arm cylinder is faulty by checking
the operation of actuators for the devices listed in the
table on the right.
if it is faulty, check the main relief valve and the hydrau-
lic 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 (arm block) from the control valve. Fit the
pressure gauge to the hose just disconnected.
• Operate the lever (arm) and measure the pressure.
• If the pressure is between 0 and 3.4 MPa (0 to 493
PSI) depending on the lever angle, the pilot valve is
normal.
lever to operate
Device to check
relief valve
Pump
left travel
r2
P2
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...