JLG Lift 50HT Service & Specifications Manual (3120288) – PDF DOWNLOAD

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JLG Lift 50HT Service & Specifications Manual (3120288) – PDF DOWNLOAD

TABLE OF CONTENTS:

JLG Lift 50HT Service & Specifications Manual (3120288) – PDF DOWNLOAD

SUBJECT – SECTION, PARAGRAPH PAGE NO.
LIST OF ILLUSTRATIONS AND TABLES…………………………………… ii
SECTION 1 – SPECIF ICATIONS
1-1. Capacities…. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2. Component Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3. Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-4. Torque Requirements ………………………………………….. 1-2
1-5. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-6. Pressure Settings ……………………………………………… 1-4
1-7. Cylinder Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1-8.
Boom Tape …………………………………………………… · 1-5
1-9. Major Component Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
SECTION 2 – PROCEDURES
2-1. Boom Chains…………………………………………………. 2-1
2-2. Wear Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-3. Drift Test…………………… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-4. Tilt Alarm Switch Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-5. Cylinder Repair……………………………………………….. 2-5
2-6. Telescope Cylinder Removal and Installation………………………. 2-7
2-7. Throttle Checks and Adjustments LSG-423 ………………………… 2-9
2-8. Throttle Checks and Adjustments F3 L-912 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2-9. Pressure Setting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2-10. Racine Proportional Air G ap Adjustment………………………….. 2-22
2-11. Swing Bearing………………………………………………… 2-23
2-12. Drive Hub Timing……………………………………………… 2-27
2-13. Controllers …………………………………………………… · 2-27
2-14. Spark Arrestor Mufflers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
2-15. Preventive Maintenance and Inspection Schedule . . . . . . . . . . . . . . . . . . . . . . . 2-28
SECTION 3 – TROUBLESHOOTING
3-1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2. Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-3. Hydraulic Circuit Checks……………………………………….. 3-1
LIST OF ILLUSTRATIONS AND TABLES
TITLE
Lubrication Chart …………………………………… .
Torque Chart ………………………………………. .
Typical 3 Section Boom Assembly …………………….. .
Precision Governor Adjustments (LSG-423) …………….. .
Adeco Actuator Adjustment (F3L-912) …………………. .
Racine Proportional Valve Pressure Setting …………….. .
Racine Proportional Valve Pilot Pressure Setting ………… .
Vickers Proportional Valve Pressure Setting …………….. .
Solenoid Valve Pressure Settings (w/o Steering Wheel) …… .
Pressure and Flow Settings (with Steering Wheel) ……….. .
Racine Proportional Air Gap …………………………. .
Swing Bearing Tolerance Boom Placement …………….. .
Swing Bearing Tolerance Measuring Point ……………… .
Swing Bearing Tolerance Torquing Sequence …………… .
Drive Hub Carrier Timing ……………………………. .
Platform Assembly Troubleshooting ………………..•….
Boom Assembly Troubleshooting ……………………… .
Turntable Assembly Troubleshooting ………………….. .
Chassis Assembly Troubleshooting ……………………. .
Hydraulic Systems Troubleshooting …………………… .
Electrical Systems Troubleshooting …………………….

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PLEASE NOTE:

• This is the SAME exact manual used by your dealers to fix your vehicle.
• The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
• Any queries / doubts regarding your purchase, please feel free to contact [email protected]

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