JLG Boom Lift 800S HC3, 860SJ HC3 Service & Maintenance Manual 3122344500 2025

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JLG Boom Lift 800S HC3, 860SJ HC3 Service & Maintenance Manual 3122344500 2025
Size: 66.76 MB
Format: PDF
Language: English
Brand: JLG
Type of Machine: Boom Lift
Type of Manual: Service & Maintenance Manual, Electrical and Hydraulic Diagrams
Model: JLG 800S HC3, 860SJ HC3 Boom Lift
Part Number: 3122344500
Publication Date: 2025
Number of Pages: 800 Pages

Contents:
Cover Page
Effectivity Page
Read This First

Modifications​

Safety

General​

1.1.1 Disclaimer​

1.1.2 Operation & Safety Manual​

Safety Information​

1.2.1 Safety Alert System and Signal Words​

Safety Hazards​

1.3.1 Personal Hazards​

1.3.2 Equipment Hazards​

1.3.3 General Hazards​

1.3.4 Operational Hazards​

Safety Decals​

Machine Verification​

General Machine Information and Specifications

Specifications​

2.1.1 Machine Specifications​

2.1.2 Machine Dimensional Data​

2.1.3 Engine Data​

2.1.4 Tires​

2.1.5 Critical Stability Weights​

2.1.6 Torque Requirements​

2.1.7 Pressure Settings​

2.1.8 Battery​

Machine Temperature Chart​

Serial Number Location​

Fluids and Lubrication​

2.4.1 General Information​

2.4.2 Hydraulic Oil​

2.4.3 Changing Hydraulic Oil​

2.4.4 Lubrication Specifications​

2.4.5 Fluids​

2.4.6 Capacities​

2.4.7 Lubrication Schedule​

Machine Characteristics​

2.5.1 Ground Control Keyswitch System​

2.5.2 Platform Control Enable System​

2.5.3 Main Boom End of Stroke Damping​

2.5.4 HRC Engine Emission Characteristics​

2.5.5 Diesel Particulate Filter (If Equipped)​

2.5.6 Drive System​

2.5.7 Drive Orientation System​

2.5.8 Function Speed Control System​

2.5.9 Oscillating Axle System​

2.5.10 Chassis Tilt Indicator System​

2.5.11 Platform Load Sensing System​

2.5.12 Transport Position Sensing System​

2.5.13 Beyond Transport - Drive Speed Cutback System​

2.5.14 Drive/Steer - Boom Function Interlock System​

Clearsky Smart Fleet (If Equipped)​

2.6.1 General​

2.6.2 ClearSky Smart Fleet™ — Access Control​

Maintenance and Inspection Schedules

Machine Preparation, Inspection, and Maintenance​

3.1.1 General​

3.1.2 Preparation, Inspection, and Maintenance​

3.1.3 Pre-Start Inspection​

3.1.4 Pre-Delivery Inspection and Frequent Inspection​

3.1.5 Annual Machine Inspection​

3.1.6 Preventive Maintenance​

Service and Guidelines​

3.2.1 General​

3.2.2 Safety and Workmanship​

3.2.3 Cleanliness​

3.2.4 Components Removal and Installation​

3.2.5 Component Disassembly and Reassembly​

3.2.6 Pressure-Fit Parts​

3.2.7 Bearings​

3.2.8 Gaskets​

3.2.9 Bolt Usage and Torque Application​

3.2.10 Hydraulic Lines and Electrical Wiring​

3.2.11 Hydraulic System​

3.2.12 Lubrication​

3.2.13 Battery​

3.2.14 Welding on JLG Equipment​

Preventive Maintenance and Inspection Schedule​

3.3.1 Daily​

3.3.2 First 50 Hours​

3.3.3 Every 150 Hours or 3 Months​

3.3.4 First 300 Hours or 6 Months​

3.3.5 First 300 Hours or 1 Year​

3.3.6 Every 600 Hours or 1 Year​

3.3.7 Every 1200 Hours or 1 Year​

3.3.8 Every 1000 Hours or 1 Year​

3.3.9 Every 1200 Hours or 2 Years​

Pins and Composite Bearing Repair Guidelines​

Tires and Wheels​

3.5.1 Tire Inflation​

3.5.2 Tire Damage​

Fuel Tank Inspection​

Boom Inspection and Maintenance​

3.7.1 Wire Rope Tensioning Procedure​

3.7.2 Wire Rope​

3.7.3 Boom Cleanliness Guidelines​

3.7.4 Boom Wear Pad Inspection​

Hydraulic Filter Replacement​

3.8.1 Hydraulic Filter Removal​

3.8.2 Hydraulic Filter Installation​

Turntable Bearing Inspection​

3.9.1 Turntable Bearing Mounting Bolt Condition Check​

Engine General Inspection​

3.10.1 General Maintenance​

3.10.2 Checking Oil Level​

3.10.3 Changing Engine Oil​

3.10.4 Replacing the Oil Filter​

3.10.5 Replacing the Primary Fuel Filters​

3.10.6 Replacing the Fuel Pre-Filter​

3.10.7 Water in Fuel Sensing System (Optional)​

3.10.8 Draining Water​

3.10.9 Auxiliary Fuel Filter​

3.10.10 Clean Fuel Strainer for Deutz D2011LO40 (only)​

3.10.11 Spark Arrester Cleaning Instructions for Deutz D2011LO40 (only)​

3.10.12 Glow Plugs​

Bio Fuel In Deutz Engines​

3.11.1 General​

3.11.2 Bio Fuel​

3.11.3 Biological Contamination In Fuels​

Deutz EMR2​

Deutz EMR5​

Generator Inspection​

3.14.1 2500W Generator​

3.14.2 4000W Generator​

3.14.3 7500W Generator​

Testing, Calibrations and Special Procedures

Special Tools​

4.1.1 Multimeter Basics​

4.1.2 Threadlocking Compound​

4.1.3 Tools Catalog​

Testing Procedures​

4.2.1 Starter​

4.2.2 SkyGuard​

4.2.3 LSS Testing and Evaluation​

4.2.4 Troubleshooting​

Calibration Procedures​

4.3.1 JLG Analyzer​

4.3.2 Calibration Preparation​

4.3.3 Load Sensing System Calibration​

4.3.4 Tilt Sensor Calibration​

4.3.5 Boom Angle Calibration​

4.3.6 Calibrating the Load Sensor​

Special Procedures​

4.4.1 Drive Cutout Override Service Mode​

4.4.2 Fuel Tank Cleaning and Drying​

4.4.3 Cylinder Checking Procedure​

4.4.4 Cylinder Drift​

4.4.5 Hydraulic Circuits​

4.4.6 Lockout Cylinder Bleeding​

4.4.7 Oscillating Axle Lockout Test​

4.4.8 Free Wheeling Option​

Wheel Drive Hub​

4.5.1 Roll and Leak Test​

Swing Drive​

4.6.1 Roll, Leak and Brake Testing​

4.6.2 Tightening and Torquing Bolts​

System Software

Load Sensing System (LSS)​

5.1.1 Theory of Operation​

5.1.2 Load Sensing Gauge Removal/ Installation​

JLG Analyzer​

5.2.1 Introduction​

5.2.2 To Connect the JLG Control System Analyzer​

5.2.3 Using the Analyzer​

5.2.4 Changing the Access Level of the Hand Held Analyzer​

5.2.5 Adjusting Configuration Using the Hand Held Analyzer​

5.2.6 Machine Setup​

5.2.7 Level Vehicle Description​

5.2.8 Analyzer Software Versions P6.47​

Analyzer Software Accessibility​

5.3.1 Analyzer Diagnostics Menu Structure​

5.3.2 Machine Set-Up​

5.3.3 Personalities​

Function Test​

CANBUS Communications​

Service Mode​

5.6.1 Load Sensing System​

5.6.2 Drive Cutout Override​

Electronic Platform Leveling​

5.7.1 Description​

5.7.2 Normal Operation​

5.7.3 Platform Leveling Fault​

5.7.4 CAN Errors​

5.7.5 Replacing the Level Sensors​

5.7.6 Additional Platform and Jib Valves​

5.7.7 Platform Leveling Calibration Procedure​

ClearSky (CS550) Configuration and Troubleshooting​

5.8.1 ClearSky Smart FleetTM CS550 Configuration​

5.8.2 Troubleshooting​

Fault Codes

Fault Codes Introduction​

Engine Diagnostic​

6.2.1 Deutz TD2.9L4 (EMR4 or T4F) Engine​

6.2.2 Deutz TD2.9L4 (Stage V) Engine​

6.2.3 Deutz D2011LO40 Engine​

6.2.4 Ford Engine​

Machine Fault Codes​

6.3.1 General​

6.3.2 ClearSky Smart Fleet DTC Fault Codes​

ClearSky CS550 Troubleshooting Procedures​

Hydraulics

General Information and Safety​

Theories of Operation​

7.2.1 Cylinders​

7.2.2 Valves​

Hydraulic Components​

7.3.1 Start-up After Overhaul or Replacement of Components​

7.3.2 Set Up of the Function Pump​

7.3.3 Adjustments Made at the Main Valve Block​

7.3.4 Adjustments Made at the Platform Valve Assembly​

Torque Values​

7.4.1 Valve Torque Specifications​

Standard Hydraulic Diagram- Boom And Turntable​

7.5.1 For 800S HC3 (with tow bar)​

7.5.2 For 860SJ HC3 (without tow bar)​

7.5.3 For 860SJ HC3 (with tow bar)​

Hydraulic Diagram - Chassis​

7.6.1 Oscillating Axle​

7.6.2 4WD (without arctic package)​

7.6.3 4WD, 2WS For Deutz Engine​

7.6.4 4WD, 2WS (with Tow bar) For Deutz Engine​

Electricals

General Information​

8.1.1 Applying Silicone Dielectric Compound to Electrical Connections​

8.1.2 Dielectric Grease Application​

Electrical Connectors​

8.2.1 Deutsch Connectors​

Electrical Component Terminology​

Harness Layouts​

Board Layouts​

8.5.1 Ground Control Module Pin Connections​

8.5.2 Platform Control Module Pin Connections​

AMP Connector​

8.6.1 Assembly​

8.6.2 Disassembly​

8.6.3 Wedge Lock​

8.6.4 Service - Voltage Reading​

Telematics Gateway​

8.7.1 Telematics-Ready (TCU) Plug​

Removal and Installation

Wheel and Tire​

Chassis/Frame Assembly​

9.2.1 Axle and Drive Assemblies Troubleshooting​

9.2.2 Drive Hub and Motor​

9.2.3 Spindle Assembly​

9.2.4 Axle Assembly​

Boom​

9.3.1 Boom Components Terminology​

9.3.2 Troubleshooting​

9.3.3 Main Boom Powertrack​

9.3.4 Main Boom Assembly​

9.3.5 Boom Sensors​

9.3.6 JIB​

Platform​

9.4.1 Platform Support​

9.4.2 Bolt-On External Fall Arrest​

Engine​

9.5.1 Component Terminology​

9.5.2 Engine Serial Number​

9.5.3 Engine Replacement​

9.5.4 Surge Tank (Deutz TD2.9L4 (T4F, Stage V, China III and IV))​

9.5.5 Pump Coupling Kit​

9.5.6 Air Filter Assembly​

9.5.7 Radiator Assembly​

9.5.8 Thermostat​

9.5.9 Coolant Temperature Sensor​

9.5.10 Relay Assembly​

9.5.11 Starter​

9.5.12 Alternator​

9.5.13 Fuel Tank​

9.5.14 Pre-Fuel Filter and Fuel Pump​

9.5.15 Ford 2.5L Engine Fuel System Repair​

Transmission​

Hydraulic Cylinders​

9.7.1 Main Lift Cylinder​

9.7.2 Telescope Cylinder/Boom Cable​

9.7.3 Rotator and Level Cylinder​

9.7.4 Steer Cylinder​

Hydraulic Valves​

9.8.1 Platform Control Valve​

9.8.2 Main Control Valve​

Hydraulic Pumps​

9.9.1 Variable Pump Assembly​

9.9.2 Hydrostatic Pump Assembly​

Electrical Components​

9.10.1 Battery​

Turntable​

9.11.1 Swing Bearing​

9.11.2 Counterweight​

9.11.3 Rotary Coupling​

Generator Pulley (task)​

9.12.1 7500W and 4000W - Deutz TD2.9L4 (T4F and Stage V Engines)​

9.12.2 2500W - Ford​

9.12.3 2500W - Deutz D2011LO40​

9.12.4 7500W Skypower - Deutz D2011LO40​

9.12.5 7500W Skypower - Ford DF​

9.12.6 4000W - Deutz D2011LO40​

9.12.7 2500W - Deutz TD2.9L4​

ClearSky® LED Motion / Amber Beacon (CS550) (if equipped)​

9.13.1 ClearSky® LED Motion / Amber Beacon (CS550) (if equipped)​

Disassembly and Assembly

Drive Assembly​

10.1.1 Drive Hub​

10.1.2 Drive Brake​

10.1.3 Drive Motor​

Boom and Jib Assembly​

10.2.1 Main Boom​

10.2.2 JIB (860SJ HC3 Only)​

10.2.3 Helac Rotary Actuator​

Hydraulic Cylinders​

10.3.1 Axle Lockout Cylinder​

10.3.2 Jib Lift Cylinder (860SJ HC3)​

10.3.3 Main Boom Lift Cylinder (800S HC3)​

10.3.4 Main Boom Lift Cylinder (860SJ HC3)​

10.3.5 Platform Level Cylinder (800S HC3)​

10.3.6 Platform Level Cylinder (860SJ HC3)​

10.3.7 Steer Cylinder​

10.3.8 Telescope Cylinder​

Turntable​

10.4.1 Swing Drive​

10.4.2 Swing Motor​

10.4.3 Procedure for Setting Swing Gear Backlash​

10.4.4 Rotary Coupling​

10.4.5 Rotary Coupling Seal Kit​

Generator Disassembly and Assembly​

10.5.1 7500W Generator​

10.5.2 4000W Generator​

Powertrack Maintenance (task)​

10.6.1 One Piece Bracket Maintenance​

10.6.2 Two Piece Bracket Maintenance​

10.6.3 Snap Rings and Screws​

Torque/Connection Information

Hydraulic Fittings​

11.1.1 Tapered Thread Types​

11.1.2 Straight Thread Types, Tube and Hose Connections​

11.1.3 Straight Thread Types, Port Connections​

11.1.4 Flange Connection Types​

11.1.5 Tightening Methods​

11.1.6 Assembly and Torque Specifications​

11.1.7 General Tube Type Fitting Assembly Instructions​

11.1.8 Assembly Instructions for American Standard Pipe Thread Tapered Connections.​

11.1.9 Assembly Instructions for British Standard Pipe Thread Tapered Connections​

11.1.10 Assembly Instructions for 37° (JIC) Flare Fittings​

11.1.11 Assembly Instructions for 45° SAE Flare Fittings​

11.1.12 Assembly Instructions for O-Ring Face Seal (ORFS) Fittings​

11.1.13 Assembly Instructions for DIN 24° Flare Bite Type Fittings (MBTL and MBTS)​

11.1.14 Assembly Instructions for Bulkhead (BH) Fittings​

11.1.15 Assembly Instructions for O-Ring Boss (ORB) Fittings​

11.1.16 Assembly Instructions for Adjustable Port End Metric Fittings​

11.1.17 Assembly Instructions for Metric ISO 6149 (MPP) Port Assembly Stud Ends​

11.1.18 Assembly instructions for Adjustable Port End (BSPP) Fittings​

11.1.19 Assembly Instructions for Flange Connections: (FL61 and FL62)​

11.1.20 Double Wrench Method​

11.1.21 FFWR and TFFT Methods​

11.1.22 Adjustable Stud End Assembly​

11.1.23 O-ring Installation (Replacement)​

Torque Charts​

11.2.1 SAE Fastener Torque Chart​

11.2.2 Metric Fastener Torque Chart​

Schematics

Hydraulic Schematics​

Electrical Schematics​

Deutz EMR2 Schematics​

12.3.1 Vehicle Side Connection Diagram​

12.3.2 Engine Side Connection Diagram - Sheet 1 of 2​

12.3.3 Engine Side Connection Diagram - Sheet 2 of 2​

12.3.4 Engine Plug Pin​

12.3.5 Vehicle Plug Pin Identification​

Deutz EMR5 Schematics​

12.4.1 Power Harness​

12.4.2 Exhaust After Treatment Harness​

12.4.3 Equipment Harness - Sheet 1 of 5​

12.4.4 Equipment Harness - Sheet 2 of 5​

12.4.5 Equipment Harness - Sheet 3 of 5​

12.4.6 Equipment Harness - Sheet 4 of 5​

12.4.7 Equipment Harness - Sheet 5 of 5​

12.4.8 Engine Plug Pin Identification​

12.4.9 Vehicle Plug Pin Identification​

7500W Generator Schematic​

12.5.1 Troubleshooting Circuit Diagram​

12.5.2 Generator and Controller Circuit Diagram​

12.5.3 Power Board PC1 Circuit Diagram​

12.5.4 Power Board PC2 Electrical Circuit Diagram​

12.5.5 Lead Connection List​

4000W Generator Schematic​

12.6.1 Generator and Controller Circuit Diagram​

12.6.2 Lead Connection List​