Indledning
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.
Indledende opsætning og klargøring
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.
Sikkerhed først: 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.
- Kontrol før operation: Verify fluid levels (engine oil, coolant, hydraulic fluid), tire pressure, and general condition of the tractor before each use.
- Start af motor: Follow the manufacturer's recommended starting procedure, typically involving engaging the clutch, ensuring the transmission is in neutral, and turning the ignition.
- Kontrolelementer: Familiarize yourself with the location and function of all controls, including throttle, gear selector, PTO engagement, and hydraulic levers.
Vedligeholdelsesplan og procedurer
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)
- Kontroller motoroliestanden.
- Inspect coolant level.
- Verify hydraulic fluid level.
- Tjek dæktryk og tilstand.
- 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.
- Udskiftning af brændstoffilter.
- Hydraulic system filter replacement.
- Transmission fluid check/change.
- Greasing pivot points.
- Bremse justering.
Detailed instructions for each maintenance task, including required tools and torque specifications, are provided in the respective sections of this manual.
Fejlfinding af almindelige problemer
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 | Mulig årsag | Handling |
|---|---|---|
| Motoren starter ikke | Lavt batteri, brændstofproblem, fejl i startmotoren | Check battery charge, verify fuel supply, inspect starter connections. |
| Tab af hydraulisk kraft | Low hydraulic fluid, clogged filter, pump malfunction | Kontroller væskeniveauet, udskift filteret, og inspicer pumpen for skader. |
| Overophedning af motor | Lav kølevæske, tilstoppet radiator, defekt termostat | Kontroller kølevæskeniveauet, rengør kølerribberne, test termostaten. |
For detailed diagnostic procedures and repair steps, refer to the specific troubleshooting chapters in this manual.
Tekniske specifikationer
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:
- Sider: 818
- Sprog: engelsk
- Udgivelsesdato: 1. januar 1986
- Forlægger: Genudgiv
- ISBN-10: 1649270712
- ISBN-13: 978-1649270719





