John Deere 850 900HC 950 and 1050 Tractors INDEX:

SECTION 10 – GENERAL
Specifications and Special Tools
Group 00 –
Group 05 –
Predelivery, Delivery, and After-Sale
Serwces—850 and 950 Tractors
Group 06 –
Predelivery, Delivery, and After-Sale
Services—1050 Tractor
Group IO –
Tune-Up
Group 15 –
Lubricaton
Group 20 –
Separation
SECTION 20 – ENGINE REPAIR
Specifications and Special Tods
Group 00 –
Group 05 –
Cylinder Head, Valves, and Cam-
shaft—850 and 950 Tractors
Group 06 –
Cylinder Head, Valves, and Cam-
shaft—1050 Tractor
Group IO
– Cylinder Blocki Liners, Pistons and
Rods
Group 15 –
Crankshaft. Main Bearings, and Fly-
wheel
Group 20 –
Lubrication System
Group 25
– Cooling System—850 and 950 Trac-
torst
Group 26 –
Cooling System—850, 950, and
1050 Tractors”
SECTION 30 – FUEL AND AIR REPAIR
Group 00
Specifications and Special Tools
Group 05
– 850 and 950 Air Intake System
Group 06
– 1050 Air Intake System
Group 10
– Diesel Fuel System
Group 15
– 850 and 950 Control Lhkage*
Group 16 –
850, 950, and 1050 Control Linkage”
SECTION 40 –
ELECTRICAL REPAIR
Group 00
– Specifications and Special Tools
Group 05
– General Information
Group IO –
Charging System
Group 15 –
Starting Circuit
Group 20 –
Lighting and Accessory Circuits
SECTION 50
– POWER TRAIN REPAIR
– Specifications and Special Tools
Group OO

SECTION 50—POWER TRAIN REPAIR—Continued
Engine and Clutch Lhkage 850 (16001- 950 (20001- ) and 1050
Tractor
Siding Gear Transmission 850 ( -16000) and 950 ( -20000) Tractors
Sliding Gear Transmission 850
(16001- 950 (20001- ) and 1050Tractor
15 – PTO ( -16000) and 950( -20000) Tractors
16 – PTO 850 (16001 j, 950 (20001- )and1050 Tractor
20 – Differential 850 ( -16000) and 950 ( -20000) Tractors
21 – Differential 850 (16001- 950
(20001- ) and 1050 Tractor
Final Drive—850-950 Tractors
26 – Final Drive—1050 Tractor
Drop Housings and Drives—900HC Tractor
Mechanical Front-Wheel Drive
SECTION 60 – STEERING/BRAKES REPAIR
– Specifications and Special Tools
Group 05 –
Steering
Group 10 –
Power Steering
Group 15
– Brakes
SECTION 70 – HYDRAULIC REPAIR
Group 00
Specifications and Special Tools
Group 05
Hydraulic Purnp and Oil Filters
Group 10 –
850/950 Rockshaft and Implement
Hitches
Group 15 –
Rockshaft and implement
Hitches
Group 20 –
Selective Control Valve
SECTION 80 – MISCELLANEOUS REPAIR
– Specifications and Special Tools
– Front Axle Assembly
Group 10 – Wheels

SECTION 260 – STEERING/BRAKES OPERATION
AND TESTS
Group 00 – Specifications and Special Tools
Group 05 – Steering
Group IO – Power Steering
Group 15 – Brakes
SECTION 270 – HYDRAULIC OPERATION AND
TESTS
Specifications and Special Tools
Hydraulic System Operation
Hydrau(ic System Tests and Diagnosis
Hydraulic Pump
850/950 Rockshaft and Implement
Hitches
1050 Rockshaft and Impiernent
Hitches
Selective Control Valve

SECTION 90 – OPERATOR STATION REPAIR
Specifications and Special Tools
SECTION 220 – ENGINE OPERATION AND TESTS
Group 00 – Specifications and Special Tools
Group 05 – System Operation
Group 10 System Tests and Diagnosis
SECTION 230 – FUEL/AIR OPERATION AND TEST
Specifications and Special Tools
850 and 950 Air Intake System
– 1050 Air Intake System
Diesel Fuel System
Speed Control Linkage—850 and
950 Tractors*
Speed Control Linkage—850, 950, and 1050 Tractors* *
SECTION 240 – ELECTRICAL OPERATION AND TESTS
Specifications and Special Tools
General Information and Diagrams
Charging System Diagnosis
Starting Circuit Diagnosis
Lighting and Accessory Circuits