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V-19
TROUBLESHOOTING
LIFT ARMS
3. Inspect movement of the spool.
a. Disconnect one of the hoses connected to the
lift arm section of the control valve.
b. Fit a pressure gauge to the lift arm section.
c. Engage the lever to operate the lift arms and
measure the pressure.
• The lift arms are working properly if the pres-
sure is within the specified values.
4. Perform replacement test for the port relief
valves.
Replace the port relief valve for the bucket with
a working one and see if the lift arm cylinders
then operate properly. If they do, the port relief
valve for the lift arms may be judged to be at
fault.
5. Inspect the arm float solenoid valve.
Foreign particles working their way onto the
surface of the valve sheet or the locking of the
poppet in a fixed position causes the pressure
normally fed to the cylinders to escape to the
tank circuits, thus causing the lift arms to fail to
work entirely.
6. Inspect the lift arm cylinders.
a. Disconnect the hoses connected to the lift
arm section of the control valve.
b. Connect the hoses to the bucket section.
c. Try moving the lift arm cylinders. The cylin-
ders may be judged to be at fault if they fail to
move here.
Always be sure to lower the lift arms and
bring the bucket down and into contact
with the ground before beginning the above
procedure.
T7E008
B1
A1
T7E009
T7E010
Summary of Contents for TL150
Page 1: ...TL150 Track Loader BOOK No CT7E901 WORKSHOP MANUAL Serial No 21500004...
Page 4: ...0 4...
Page 5: ...I 1 I GENERAL...
Page 18: ...I 14 GENERAL...
Page 19: ...II 1 II SPECIFICATIONS...
Page 44: ...III 1 III MACHINE CONFIGURATION...
Page 94: ...III 51 MACHINE CONFIGURATION ELECTRICAL SYSTEM ELECTRICAL SYSTEM ELECTRICAL WIRING DIAGRAM...
Page 122: ...III 79...
Page 146: ...MACHINE CONFIGURATION III 103...
Page 147: ...IV 1 IV HYDRAULIC UNITS...
Page 152: ...IV 6 HYDRAULIC UNITS HST PUMP 1 Plug 2 Plug 3 Plug 4 Screw 5 Seal Nut 6 Plug Pump Assembly 4 4...
Page 189: ...IV 43 HYDRAULIC UNITS GEAR PUMP INSPECTION AND ADJUSTMENT IV 36 38 TROUBLESHOOTING IV 39...
Page 230: ...IV 84 HYDRAULIC UNITS PILOT VALVE INSPECTION AND ADJUSTMENT IV 79 TROUBLESHOOTING IV 80...
Page 261: ...IV 115 HYDRAULIC UNITS TRAVEL MOTOR DISASSEMBLY AND ASSEMBLY Special tools...
Page 263: ...IV 117 HYDRAULIC UNITS TRAVEL MOTOR...
Page 282: ...IV 136 HYDRAULIC UNITS TRAVEL MOTOR...
Page 283: ...V 1 V TROUBLESHOOTING...