JLG E300A, E300AJ, E300AJP Boom Lift Service Manual
174 pages · Publication 3120772
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What's inside
From the manual's own table of contents: 250 sections, 300 entries. See sample pages (PDF, 648 KB)
General
Hydraulic System Safety
Maintenance13 topics
- Capacities
- Operating specifications
- Battery Charger
- Drive System
- Tires
- Hydraulic Filter
- Hydraulic Pump/Electric Motor Assembly
- Dimensional Data
- Function Speeds
- Torque Specifications
- Pressure Settings
- Cylinder Specifications
- Major Component Weights
Critical Stability Weights4 topics
- Serial Number Locations
- Hydraulic Oil
- Lubrication
- Machine Preparation, Inspection, and Maintenance
Preparation, Inspection, and Maintenance
Pre-Start Inspection
Pre-Delivery Inspection and Frequent Inspection
Annual Machine Inspection
Preventative Maintenance1 topic
- Service and Guidelines
Safety and Workmanship
Cleanliness
Components Removal and Installation
Component Disassembly and Reassembly
Pressure-Fit Parts
Bearings
Gaskets
Bolt Usage and Torque Application
Hydraulic Lines and Electrical Wiring
Hydraulic System
Lubrication
Battery
Lubrication and Servicing1 topic
- Lubrication and Information
Hydraulic Oil
Changing Hydraulic Oil
Show all 250 sections
Lubrication Specifications1 topic
- Cylinder Drift Test
Platform Drift
Cylinder Drift2 topics
- Pins and Composite Bearing Repair Guidelines
- Welding on JLG Equipment
SECTION NO. TITLE PAGE NO. Do the Following When Welding on JLG Equipment
Do NOT Do the Following When Welding on JLG Equipment1 topic
- Tires and Wheels
Tire Wear and Damage
Wheel and Tire Replacement
Wheel Installation
Disassembly
Disassembly of Cover
Disassembly of the first stage planetary assembly (7)
Disassembly of second stage planet gears (1)
Assembly of first stage planetary assembly (7)
Assembly of end cover unit (8)
Final Assembly
Initial Start-up And After Repairs
Oil Change Interval-Gear Drive1 topic
- Drive Hub (S/N 115723 to Present)
Roll and Leak Testing
Tightening and Torquing Bolts
Main Disassembly
Output Carrier Disassembly
Input Carrier Disassembly
Hub-Spindle Disassembly
Cover Disassembly
Input Carrier Assembly
Output Planet Gear Assembly
Output Carrier Assembly
Hub-Spindle Assembly
Cover Subassembly
Main Assembly1 topic
- Drive Brake - Mico
Assembly
Bleeding1 topic
- Speed Sensor Adjustment
Adjustment Procedure2 topics
- Positrac/Tilt module
- Swing Bearing
Turntable Bearing Mounting Bolt Condition Check
Wear Tolerance
Replacement of Swing Bearing
Swing Bearing Torque Value
Checking Worm Gear End Play
Adjusting End Play1 topic
- Swing Motor
Removal
Shaft Timing Procedure
Installation1 topic
- Helac Rotary actuator
Theory Of Operation
Tools Required for Assembly/Disassembly
Inspection1 topic
- SECTION NO. TITLE PAGE NO. Battery Maintenance and Charging
Battery Maintenance, Quarterly
Charging Sequence of Remote LED Card1 topic
- Boom Maintenance
Removal of the Boom Assembly
Disassembly of the Main Boom
Assembly of the Main Boom
Installation of the Boom Assembly6 topics
- Wear Pads
- Articulating Jib (AJ/AJP)
- Tilt Indicator Switch Leveling
- Footswitch Adjustment
- Boom Limit Switches
- Lubricating O-Rings in the Hydraulic System
Cup and Brush
Dip Method
Spray Method
Brush-on Method1 topic
- Cylinders - Theory of Operation
Systems Incorporating Double Acting Cylinders1 topic
- Cylinder Checking Procedures
Cylinder Without Counterbalance Valves (Steer and Master)
Cylinders With Single Counterbalance Valve (Upper Lift Cylinder)1 topic
- Cylinder Repair
Cleaning and Inspection1 topic
- Cylinder Removal And Installation
Upper (Main) Boom Lift Cylinder Removal
Upper (Main) Boom Lift Cylinder Installation
Lower Lift Cylinder Removal
Lower Lift Cylinder Installation
Upper Boom Telescope Cylinder Removal
Upper Boom Telescope Cylinder Installation1 topic
- Lower Lift Cylinder Bleeding Procedure
Main Relief at Pump
Upper Lift Down Relief
Lower Lift Down Relief
Swing Relief
Telescope In Relief
Platform Level Up Relief
Platform Level Down Relief
Steer Relief2 topics
- Brake/Steer Valve Hydraulic filter replacement
- JLG Control System Analyzer Kit Instructions
Introduction
To Connect the JLG Control System Analyzer
SECTION NO. TITLE PAGE NO. Using the Analyzer
Changing the Access Level of the Hand Held Analyzer
Adjusting Parameters Using the Hand Held Analyzer
Machine Setup
Machine Configuration Programming Information
Machine Personality Settings
Level Vehicle Description
Help Descriptions and Fault Flash Codes
Analyzer Diagnostics Menu Structure
System Self Test2 topics
- General
- Multimeter Basics
Grounding
Backprobing
Min/Max
Polarity
Scale
Voltage Measurement
Resistance Measurement
Continuity Measurement
Current Measurement2 topics
- Applying Silicone Dielectric Compound to Electrical Connections
- AMP Connector
Applying Silicone Dielectric Compound to AMP Connectors
Wedge Lock
Service - Voltage Reading1 topic
- Deutsch Connectors
DT/DTP Series Assembly
DT/DTP Series Disassembly
HD30/HDP20 Series Assembly
HD30/HDP20 Series Disassembly
Operator Maintenance & Lubrication Diagram
Torque Chart - (In/Lb - Ft/Lb). (For ASTM Fasteners)
Torque Chart (Metric Conversion) - (For ASTM Fasteners)
Torque Chart - (N, m) - (For Metric Class Fasteners)
Drive Hub
Main Disassembly Drawing 1
Main Disassembly Drawing 2
Output Carrier
Planet Gear
Input Carrier
Hub Spindle
Cover Assembly
Hub Assembly - Sheet 1 of 2
Cup Pressing Tool
Drive Brake
Speed Sensor Orientation. (E300)
Frame Mounted Electrical Components
Steering Components and Spindle
Drive Components
Swing Bearing Feeler Gauge Check
Swing Bearing Tolerance Measuring Point
Swing Bearing Tolerance Boom Placement
Swing Bearing Torquing Sequence
Seal Orientation
Notch Alignment
Timing Mark
Swing Motor
Swing Components
Rotary Actuator (Exploded View)
Rotary Actuator (Cutaway View)
Remote LED Card
Battery Installation
Battery Cable Connections
Boom Assembly
Tower Boom Assembly
Location of wear Pads
Platform Support Torque Values
Boom Limit Switches
Boom Positioning and Support, Cylinder Repair
Cylinder Barrel Support
Capscrew Removal
Cylinder Rod Support
Tapered Bushing Removal
Gar-Max Bearing installation
Jib Cylinder
Level Cylinder
Main Boom Lift Cylinder
Tower Boom Lift Cylinder
Master Cylinder
Steer Cylinder
Telescope Cylinder
Rod Seal Installation
Wiper Seal Installation
Installation of Head Seal Kit
Piston Seal Kit Installation
Tapered Bushing Installation
Seating the Tapered Bearing
Poly-Pak Piston Seal Installation
Rod Assembly Installation
Upper Boom Lift Cylinder Removal
Upper Telescope Cylinder Removal
Brake/Steer Valve Components
Control Valve Installation
Main Valve Components - Prior to S/N 0300063313
Main Valve Components - S/N 0300063313 to Present
HydraForce Cartridge Torque Value Chart
Control Module Location
Power Module
Analyzer Flow Chart - Sheet 1 of 2
Analyzer Flow Chart - Sheet 2 of 2
Voltage Measurement (DC)
Current Measurement (DC)
Connector Assembly Figure 1
AMP Connector
Connector Assembly Figure 2
Connector Assembly Figure 3
Connector Assembly Figure 4
Connector Disassembly
Connector Installation
DT/DTP Contact Installation
DT/DTP Contact Removal
HD/HDP Contact Installation
HD/HDP Locking Contacts Into Position
HD/HDP Contact Removal
HD/HDP Unlocking Contacts
Electrical Components - Sheet 1 of 2
Electrical Components - Sheet 2 of 2
Electrical Schematic - Sheet 1 of 2
Electrical Schematic - Sheet 2 of 2
Hydraulic Schematic - 300A - Sheet 1 of 2
Hydraulic Schematic - 300A - Sheet 2 of 2
Hydraulic Schematic - 300AJ - Sheet 1 of 2
Hydraulic Schematic - 300AJ - Sheet 2 of 2
Hydraulic Schematic - 300AJP - Sheet 2 of 2
Capacities
Operating Specifications - E300A
Operating Specifications - E300AJ
Operating Specifications - E300AJP
Battery Charger
Drive System
Tire Specifications
Hydraulic Filter
Hydraulic Pump/Electric Motor
Dimensional Data
Function Speeds
Torque Requirements
Pressure Settings - Prior to S/N 0300063313
Pressure Settings - S/N 0300063313 to Present
Cylinder Specifications
Major Component Weights
Mobil DTE 11M Specs
Mobilfluid 424 Specs
Mobil EAL 224H Specs
Inspection and Maintenance
Inspection and Preventive Maintenance Schedule
Wheel Torque Chart
Drive Brake Diagnosis
Cylinder Head and Tapered Bushing Torque Specifications
Holding Valve Torque Specifications
Machine Setup Descriptions
Personality Ranges/Defaults
JLG Control System Flash Codes
Diagnostics - Menu Descriptions
System Test Descriptions
System Test Messages
Inside this manual
Real pages from this service manual (174 pages). Open the sample pages (PDF, 646 KB)
- Specifications, page 13: SECTION 1 - SPECIFICATIONS
- Repair procedure, page 27: SECTION 2 - GENERAL
- Diagram, page 167: SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
- Color page, page 97: SECTION 5 - HYDRAULICS
- Color page, page 160: SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
This manual: Service Manual 3120772$69.77
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This is a service manual
Here's how it compares to the other manual types.
This manual
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 174 pages
Quantity one is the manual described above.
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Other editions and similar models
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