Introduction
This technical service manual provides detailed instructions for the repair, service, and rebuilding of John Deere 850, 900HC, 950, and 1050 Tractors. It includes illustrations and exploded views of service procedures, electrical systems, and hydraulic systems to assist technicians and owners in maintaining their equipment.
Refer to this manual for accurate and safe maintenance practices. Always prioritize safety and use appropriate tools and protective equipment when performing any service procedures.
Initial Setup and Preparation
Before beginning any service or repair, ensure the tractor is parked on a level surface, the engine is off, and the parking brake is engaged. Disconnect the battery to prevent accidental starting or electrical shorts, unless specific procedures require power.
Safety First: Always wear appropriate personal protective equipment (PPE) including safety glasses, gloves, and sturdy footwear. Refer to the safety section of this manual for detailed precautions.
Image: Cover of the John Deere 950 Tractor Technical Service Repair Manual. This image shows the front cover of the manual, indicating its purpose for service and repair of the John Deere 950 tractor.
Operating Procedures (Overview)
While this manual primarily focuses on service and repair, a basic understanding of the tractor's operation is essential for effective maintenance. Always consult the operator's manual for detailed operating instructions before using the tractor.
- Pre-Operation Checks: Verify fluid levels (engine oil, coolant, hydraulic fluid), tire pressure, and general condition of the tractor before each use.
- Starting the Engine: Follow the manufacturer's recommended starting procedure, typically involving engaging the clutch, ensuring the transmission is in neutral, and turning the ignition.
- Controls: Familiarize yourself with the location and function of all controls, including throttle, gear selector, PTO engagement, and hydraulic levers.
Maintenance Schedule and Procedures
Regular maintenance is crucial for the longevity and optimal performance of your John Deere tractor. This section outlines general maintenance tasks and refers to specific chapters within the manual for detailed procedures.
Routine Checks (Daily/Weekly)
- Check engine oil level.
- Inspect coolant level.
- Verify hydraulic fluid level.
- Check tire pressure and condition.
- Clean air filter (as needed).
- Inspect lights and safety devices.
Scheduled Service (Hours/Annually)
Refer to the specific service intervals provided in the manual for tasks such as:
- Engine oil and filter replacement.
- Fuel filter replacement.
- Hydraulic system filter replacement.
- Transmission fluid check/change.
- Greasing pivot points.
- Brake adjustment.
Detailed instructions for each maintenance task, including required tools and torque specifications, are provided in the respective sections of this manual.
Troubleshooting Common Issues
This section provides a guide to diagnosing and resolving common operational problems. For complex issues, always consult a qualified technician or refer to the detailed diagnostic charts within the manual.
| Symptom | Possible Cause | Action |
|---|---|---|
| Engine fails to start | Low battery, fuel issue, starter motor fault | Check battery charge, verify fuel supply, inspect starter connections. |
| Loss of hydraulic power | Low hydraulic fluid, clogged filter, pump malfunction | Check fluid level, replace filter, inspect pump for damage. |
| Overheating engine | Low coolant, clogged radiator, faulty thermostat | Check coolant level, clean radiator fins, test thermostat. |
For detailed diagnostic procedures and repair steps, refer to the specific troubleshooting chapters in this manual.
Technical Specifications
This manual covers the following John Deere Tractor models:
- John Deere 850 Tractor
- John Deere 900HC Tractor
- John Deere 950 Tractor
- John Deere 1050 Tractor
Specific technical data, such as engine displacement, horsepower, fluid capacities, and torque specifications, are detailed within the relevant sections for each system (e.g., Engine, Transmission, Hydraulics, Electrical).
Manual Details:
- Pages: 818
- Language: English
- Publication Date: January 1, 1986
- Publisher: RePub
- ISBN-10: 1649270712
- ISBN-13: 978-1649270719
