Case CX31B Mini Excavator Service Manual

Case CX31B Mini Excavator Service Manual

$34.00

Manual Included:

• Service Manual: 931 Pages and 1051 Pages

Specifications:

• Brand: New Holland
• Model: CX31B
• Type: Mini Excavator
• Manuals: Service Manual
• Publication Numbers: S5PW0039E01 (Oct 2014) & S5PW0040E01 (Oct 2014)
• Language: English
• Format: PDF

SKU: 758144 Categories: ,

Table of Contents

  1. Specification
  2. Maintenance
  3. System
  4. Disassembly
  5. Troubleshooting
  6. Engine

Manual Extract: CAUSES OF FAILURE AND MEASURES

Symptom Causes Remedy
1. Engine is overloaded 1) Engine speed higher than the specified value
2) Pressure higher than the specified value
3) Seizure or damage of internal parts of the pump		 1) Adjust the pump as per the specified value
2) Adjust the pump as per the specified value
3) Repair/replace the pump
2.Pump oil level is
extremely low or the
delivery pressure
does not increase		 1) Reduction of engine speed
2) Failure of pump mounting coupling
3) Seizure or damage of internal parts of the pump		 1) Adjust the speed
2) Repair/replace the pump/coupling
3) Repair/replace the pump
3. Abnormal sound or
vibration occurs
(Cavitation
phenomenon)		 1) Low tank oil level
2) Air and water contamination in the hydraulic oil
3) Clogging on the suction strainer
4) Clogging on or throttling of the suction pipe
5) Damage of the caulking part of the piston shoe
6) Looseness of the pump mounting part
7) Coupling failure		 1) Supply the hydraulic oil to the specified  level
2) Retighten the bolts of the circuit,
especially those of the suction pipes
Replace the hydraulic oil contaminated with water
3) Clean/replace the suction strainer
4) Repair the suction pipe
5) Replace the cylinder barrel assembly
6) Fix the mounting part
7) Replace the coupling
4. Oil leakage occurs 1) Failure of the O-ring or packing
2) Looseness or tightening failure of the
plug
3) Oil leakage from the oil seal edge		 1) Replace the O-ring or packing
2) Retighten the plug with the specified torque
3) Repair/replace the oil seal or shaft

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