John Deere 85G Excavator Repair Technical Manual (TM12870)

John Deere 85G Excavator Repair Technical Manual (TM12870 15FEB19)

This official repair manual provides comprehensive service, troubleshooting, and maintenance procedures for the John Deere 85G Excavator. It includes hydraulic system repairs, engine overhauls, undercarriage servicing, and electrical system diagnostics to ensure reliable machine performance.

Model Covers:

85G Excavator (PIN: 1FF085GX__J017001- )

File Format: PDF

Size: 14.45 MB

No. of pages: 382

Language: English

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Table of Contents Overview:

General Information & Safety

• Recognizing safety information and following safety instructions
• Proper use of protective equipment
• Inspection and maintenance of ROPS
• Hazards related to high-pressure fluids and oils
• Exhaust filter ash handling and disposal
• Fire prevention and handling chemical products safely

Track System

• Track roller removal, installation, and pressure testing
• Track chain repair and replacement of broken parts
• Track adjuster and recoil spring servicing
• Front idler and sprocket maintenance

Axles and Suspension Systems

• Travel gear case removal, disassembly, and servicing
• Travel motor and park brake diagnostics

Engine & Cooling System

• Engine removal, installation, and servicing
• Cooling package, radiator, and oil cooler maintenance
• Diesel Particulate Filter (DPF) removal and cleaning
• Fuel filter and water separator servicing

Hydraulic System

• Hydraulic pump removal, disassembly, and start-up procedures
• Control valve, solenoid valve, and pilot system maintenance
• Hydraulic cylinder bleeding and calibration
• Hydraulic component failure cleanup procedures

Operator’s Station

• Cab removal, installation, and windshield servicing
• Seat and seat belt maintenance
• Heating and air conditioning system troubleshooting
• Air conditioning refrigerant recovery and charging

Blade & Excavator Attachments

• Blade removal, installation, and hydraulic servicing
• Bucket, arm, and boom frame inspections
• Hydraulic system failure cleanup procedures

Swing & Rotation System

• Swing bearing, gear case, and motor servicing
• Hydraulic center joint and crossover relief valve adjustments

This John Deere 85G Excavator Repair Technical Manual is an essential resource for technicians, mechanics, and excavator owners, providing detailed repair instructions, diagnostics, and maintenance procedures for peak machine performance.