John Deere 850DLC Excavator Repair Technical Manual (TM10011)

John Deere 850DLC Excavator Repair Technical Manual (TM10011 30AUG15)

This repair manual delivers in-depth technical procedures, hydraulic schematics, engine overhaul instructions, and advanced diagnostics for the John Deere 850DLC Excavator. Designed for heavy-duty technicians, it includes full teardown, assembly, and testing procedures for all core systems.

Model Covers:

John Deere 850DLC Excavator

Note: All service instructions are grouped by function and system to aid field-level diagnosis, structural repair, and hydraulic system validation. Includes metric/inch torque values and fabricated tool references.

File Format: PDF

Size: 20.94 MB

No. of pages: 723

Language: English

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

📑 Included Sections:

General Information

• Safety guidelines, pre-operation inspections, emergency procedures
• Torque specs for inch/metric bolts, O-ring seal fittings, 4-bolt flange connections
• Connector service recommendations: flare, cone, boss, and face seal configurations

Tracks and Undercarriage

• Track roller assembly, pressure tests, and carrier roller diagnostics
• Chain disassembly, sprocket installation, idler service, adjusters and springs

Travel Systems

• Travel motor and brake disassembly, crossover valve service
• Axle shaft servicing, gearbox teardown, speed selector valve diagnostics

Engine and Cylinder Components

• Full engine removal, crankshaft rebuild, piston inspections and EGR systems
• Fuel pump, fuel rail, oil pump and cooling system breakdown with testing
• Turbocharger assembly and flywheel housing servicing

Engine Auxiliary Systems

• Cooling fan, oil cooler, radiator, intercooler and fuel filter setup
• Thermostat housing, air intake diagnostics and fuel tank removal

Dampener and Splitter Drives

• Flex coupling and pump drive gear systems with teardown guides

Frame and Structural Systems

• Frame welding repair procedures and chassis weight removal/installation

Operator’s Station

• Cab disassembly, seat rebuild, console cover removal
• HVAC component testing, R134a recovery and system charging steps

Excavator Attachments and Hydraulics

• Boom, arm, bucket and counterweight cylinders diagnostics and reassembly
• Main control valve overhaul, pilot system analysis and pressure release procedure
• Sensor manifolds, signal valves, solenoid circuits and start-up calibration

Swing System

• Swing motor, gearbox teardown, bearing seal installation and center joint service

Dealer Fabricated Tools

• Custom lift brackets, nut wrenches, holding bars and pump supports

For complete service information, also see:

JDLink (MTG) Technical Manual .......... TM114519
850DLC Excavator Diagnostic .......... TM10009
Super Caddy Oil Cleanup Procedure .......... CTM310
JDG10274 Ultrasonic Undercarriage Measurement Gauge .......... CTM10001

This John Deere 850DLC Excavator Manual is critical for heavy equipment technicians handling structural restoration, hydraulic repairs, and powertrain diagnostics on high-performance excavation systems.