John Deere 6120 6220 6320 6420 6120L 6220L 6320L 6420L 6520L Tractors Diagnosis and Tests Manual

This diagnostic and test manual for the John Deere 6120 6220 6320 6420 6120L 6220L 6320L 6420L 6520L Tractors Diagnosis and Tests is aimed at experienced technicians. It focuses on finding faults through diagnosis, analysis and testing rather than general maintenance.

The document is 2,199 pages long and is referenced as TM4733 (September 2006).

What's inside

• Section 210 — General Information (Safety Information)
• Section 211 — Diagnostic Trouble Codes: ATC, BCU, BIF, ECU, EPC, JDL, PLC, PRF, SFA, SIC, SSU, TCU, TEC, TEI, UIC
• Section 212 — Observable Symptoms: Engine, Electrical System, SyncroPlus Transmission, Power Reverser Transmission, AutoPowr/IVT Transmission, PowrQuad/PowrQuad Plus/AutoQuad Transmissions, Drive Systems, Steering and Brakes, Hydraulic System, Miscellaneous, Operator's Station
• Section 213 — System Diagnostics (Electronics)

Models covered

• 6120
• 6220
• 6320
• 6420
• 6120L
• 6220L
• 6320L
• 6420L
• 6520L

User help

1. Make sure it matches your machine. Look up your model and serial number and compare them with the coverage above. Not sure? Send us those details and we will help you check before you buy.
2. Get the file. This is a digital PDF download. Nothing is shipped, so you can start using it as soon as you have the file.
3. Open it anywhere. Use any current PDF reader (Adobe Acrobat Reader, your browser, or a phone or tablet app). Save a copy to your computer and to a backup drive.
4. Find things quickly. Use the contents pages and your reader's search (Ctrl+F or Cmd+F) to jump to a component, fault code or specification. Print only the pages you need for the workshop.
5. Start with the symptom. Use the diagnostic and test procedures to isolate the fault first, then repair only what testing points to.
6. Safety first. Work on machinery, fuel and electrical systems carries real risk. Follow the document's safety notes, use suitable tools and supports, and comply with local rules. If a job is beyond your experience, use a qualified technician.

John Deere and all model names are trademarks of their respective owners and are used here only to identify compatibility. This store is an independent seller and is not affiliated with or endorsed by John Deere. For informational and maintenance use.