John Deere 550LC Excavator Repair Technical Manual (TM1808)

John Deere 550LC Excavator Repair Technical Manual (TM1808 28JUL05)

This OEM repair manual delivers detailed service procedures, torque specifications, hydraulic schematics, and component-level overhaul instructions for the John Deere 550LC Excavator. Designed for use in professional service environments, the manual covers all critical subsystems including undercarriage, powertrain, hydraulics, electrical, and operator station components.

Model Covers:

John Deere 550LC Excavator

File Format: PDF

Size: 10.60 MB

No. of pages: 672

Language: English

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

📑 Primary Technical Sections:

General Information & Safety

• Service area preparation, hazard mitigation, and fluid handling protocols
• Torque charts (metric and inch series), seal fitting service standards
• Lubrication and fuel specifications, assembly instructions

Undercarriage & Tracks

• Track system service: rollers, sprockets, chains, idlers, track adjuster and recoil spring
• Wear measurement procedures, seal inspection, and track frame extension mechanics

Propel & Drive Systems

• Propel gearbox R&I, assembly procedures, bearing and seal replacement
• Motor crossover valves, speed selector, counterbalance, and rotary manifold service

Engine (Cummins N14)

• Engine R&I, valve clearance adjustments, crankcase ventilation checks
• Starting motor service, cooling fans, belts, radiator, and air cleaner servicing

Hydraulic System

• Main, pilot, dig, swing, and propel control valve disassembly and pressure calibration
• Pump displacement solenoid, angle sensor, flow regulators, and shut-off valve service
• Cylinder overhaul procedures (boom, arm, bucket, counterweight)

Electrical System & Controllers

• Wiring diagrams, connector servicing (DEUTSCH™, Weather Pack™), fuse replacement
• EC, PVC, monitor, and console controller removal and testing
• Battery system diagnostics and alternator/regulator servicing

Cab, Operator Station & HVAC

• Cab R&I, seat system and seat belt servicing, window and door component replacement
• Air conditioning (R134a) recovery, evacuation, recharging, and component rebuilds

Swing System

• Swing gearbox and motor disassembly, brake testing, relief/makeup valve servicing
• Swing bearing R&I and seal installation, upperstructure mount inspection

Attachments & Frame Structures

• Boom and arm R&I, bushing and pin inspection, counterweight installation (manual/hydraulic)
• Cutting edge and bucket tooth replacement, wear item service, weld zone instructions

For complete service information, also see:

550LC Excavator Operation and Tests .......... TM1807
Alternators and Starting Motors .......... CTM77
Undercarriage Appraisal Manual .......... SP326

This John Deere 550LC Repair Technical Manual is the definitive OEM reference for mechanical service, rebuilds, and hydraulic system calibration for heavy-duty excavators in field or shop environments.