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4-33
Fault
Causes
Solutions
19. Abnormal
traveling
• The track is too tight or loose
• Re-adjust
• Reduced oil pump
performance
• Consult with dealers of the
manufacturer
• Crawler frame distorted
• Repair or replace
• Crushed stones or rocks in the
track chain
• Take the stone out and repair
• Oil leakage of the control valve
• Consult with dealers of the
manufacturer
• Reduced motor performance
• Consult with dealers of the
manufacturer
20. Abnormal
slewing
• Reduced oil pump
performance
• Consult with dealers of the
manufacturer
• Slewing motor damaged
• Consult with dealers of the
manufacturer
• Pilot valve out of work
• Consult with dealers of the
manufacturer
21.
Discontinuous
slewing
• Worn slewing gear
• Consult with dealers of the
manufacturer
• Slewing bearing or ball bearing
damaged
• Consult with dealers of the
manufacturer
• Lack of grease
• Consult with dealers of the
manufacturer
• Oil leakage of the control valve
• Consult with dealers of the
manufacturer
22. Air
conditioning
system noise
• Loose electrical connectors
causing abnormal clutch noise
• Insert the connector securely or
repair as necessary
• Loose belt
• Tighten appropriately, replace if
damaged
• Loose blower blades
• Reassemble securely
• The blower does not work
normally
• Repair or replace
• The fan does not work
normally
• Repair or replace
• Damaged compressor bearing
• Replace
• Damaged tensioner bearing
• Replace
23. Air
conditioner
cooling does
not work
• Electrical circuit failure
• Repair or replace
• Air conditioning switch failure
• Repair or replace
• No refrigerant
• Check for leakage, repair, and
refill refrigerant
• System blockage
• Clean or replace
• Belt loose or broken
• Adjust or replace
• Expansion valve failure
• Clean or replace
• The compressor operates
abnormally
• Repair or replace
• Pressure switch failure
• Replace
24. Unsteady
cooled air
• Poor circuit contact
• Maintenance
• Loose belt
• Adjust the belt tension
• Improper adjustment of air
• Re-adjust
Summary of Contents for U35
Page 5: ...1 1 1 Preface...
Page 15: ...2 1 2 Safety regulations...
Page 45: ...3 1 3 Introduction of components...
Page 70: ...4 1 4 Operation guide...
Page 90: ...4 21 6 After the engine shuts down reset the shutdown lever...
Page 104: ...5 1 5 Maintenance...
Page 147: ...6 1 6 Accessories guide...