JLG E300A, E300AJ & E300AJP Articulating Lifts Service and Maintenance Manual (ANSI) – 3120772

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This service manual PDF download for the JLG E300A, E300AJ & E300AJP Electric Boom Lifts has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to fully at every opportunity.


JLG Lift E300A
JLG Lift E300AJ
JLG Lift E300AJP


Section 1. Specifications
1.1 Capacities
1.2 Operating specifications
1.3 Battery Charger
1.4 Drive System
1.5 Tires
1.6 Hydraulic Filter
1.7 Hydraulic Pump/Electric Motor Assembly
1.8 Dimensional Data
1.9 Function Speeds
1.10 Torque Specifications
1.11 Pressure Settings
1.12 Cylinder Specifications
1.13 Major Component Weights
1.14 Serial Number Locations
1.15 Hydraulic Oil
1.16 Lubrication

Section 2. General
2.1 Machine Preparation, Inspection, and Maintenance
2.2 Service and Guidelines
2.3 Lubrication and Information
2.4 Cylinder Drift Test
2.5 Pins and Composite Bearing Repair Guidelines
2.6 Welding on JLG Equipment

Section 3. Chassis & Turntable
3.1 Tires and Wheels
3.2 Drive Hub Part No. 2780236
3.3 Drive Hub (S/N 115723 to Present)
3.4 Drive Brake – Mico
3.5 Speed Sensor Adjustment
3.6 Positrac/Tilt module
3.7 Swing Bearing
3.8 Swing Motor
3.9 Helac Rotary actuator
3.10 Battery Maintenance and Charging

Section 4. Boom & Platform
4.1 Boom Maintenance
4.2 Wear Pads
4.3 Articulating Jib (AJ/AJP)
4.4 Tilt Indicator Switch Leveling
4.5 Footswitch Adjustment
4.6 Boom Limit Switches

Section 5. Hydraulics
5.1 Lubricating O-Rings in the Hydraulic System
5.2 Cylinders – Theory of Operation
5.3 Cylinder Checking Procedures
5.4 Cylinder Repair
5.5 Cylinder Removal And Installation
5.6 Lower Lift Cylinder Bleeding Procedure
5.7 Pressure Settings
5.8 Brake/Steer Valve Hydraulic filter replacement

Section 6. JLG Control System
6.1 JLG Control System Analyzer Kit Instructions

Section 7. Basic Electrical Information & Schematics
7.1 General
7.2 Multimeter Basics
7.3 Applying Silicone Dielectric Compound to Electrical Connections
7.4 AMP Connector
7.5 Deutsch Connectors


File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Part Number : 3120772
Total Pages : 174

This service manual / repair manual / workshop manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same manual your local dealer will use when doing a repair. This is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!

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JLG E300A, E300AJ & E300AJP Articulating Lifts Service and Maintenance Manual (ANSI) – 3120772.pdf

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