Troubleshooting Tools
Troubleshooting Tools at Your Fingertips
JLG's Online Express houses a multitude of self-service tools that enable you to quickly diagnose and resolve issues in order to get your machine efficiently back to the jobsite.
Create a free Online Express login to take advantage of these tools and more.
Knowledge Base
Fault Code Lookup
Search over 1,500 articles by fault code or symptom to find fault code descriptions, possible causes, troubleshooting steps, special tools required and helpful documents to get your machine back to work.
Technical Publications
Browse Manuals
Download schematics, forms and manuals (Parts, Operation, Service and Supplemental).
3D Schematics
Troubleshooting Hydraulics
View interactive 3-D renderings of your machine in Online Express to help you troubleshoot any hydraulic issues on your machine.