Troubleshooting
SY115C9/135C/155H Crawler Hydraulic Excavator
Troubleshooting
Safety, Operation and Maintenance Manual - Aug 2012
6-1
6 Troubleshooting
6.1 Troubleshooting Preparation.................................................................................... 6-3
6.1.1 Checks before troubleshooting ...................................................................... 6-3
6.1.2 Troubleshooting procedure ............................................................................ 6-4
6.1.3 Troubleshooting precautions .......................................................................... 6-6
6.1.4 Electrical circuits troubleshooting precautions ............................................... 6-9
6.1.5 Hydraulic components handling precautions ............................................... 6-10
6.2 Pseudo Failures ..................................................................................................... 6-12
6.3 Towing the Machine ............................................................................................... 6-13
6.4 Towing Hook for Light Loads ................................................................................. 6-15
6.5 Severe Operating Conditions................................................................................. 6-15
6.6 Engine Failures ...................................................................................................... 6-16
6.6.1 Engine troubleshooting table ....................................................................... 6-16
6.6.2 Coolant temperature high ............................................................................ 6-19
6.6.3 Engine oil pressure low ................................................................................ 6-20
6.6.4 When fuel exhausts ..................................................................................... 6-22
6.6.5 When engine rotates reversely ................................................................... 6-24
6.7 Failures of the Electrical System ........................................................................... 6-25
6.7.1 Electrical system troubleshooting table........................................................ 6-25
6.7.2 Failure codes ............................................................................................... 6-28
6.8 Battery .................................................................................................................. 6-30
6.8.1 Battery removal and installation ................................................................... 6-30
6.8.2 Battery charging ........................................................................................... 6-31
6.8.3 Jump-starting the engine ............................................................................. 6-32
6.8.3.1 Connecting the jumper cables ............................................................ 6-33
6.8.3.2 Starting the engine .............................................................................. 6-34