Straight off JLG's own press: document 3120816 is the 86-page JLG CM25RT, CM33RT, CM40RT Service and Maintenance Manual, here as a PDF covering all three sizzor lift models. Electrical diagrams close out the book, drawn separately for battery-powered, gasoline, and Deutz diesel machines, so a dead limit switch stops being a mystery. Troubleshooting tables for the platform elevation system, chassis, and electrical circuits fill the last third, and the torque hub procedures walk you through disassembly, roll testing, and leak testing. Swap the hydraulic filter element every 250 hours, spec it at 25 microns nominal, and fill the tank to 64.4 liters; the capacities chapter holds the rest. Guess a pressure setting wrong and you buy a pump. Bookmarked and searchable by keyword, this file lives wherever your lift does: shop bench, service truck, or rental yard.
What's Inside This JLG CM25RT, CM33RT, CM40RT Manual
| System | Pages | Key Topics |
|---|
| List of Illustrations | 6 | Serial Number Locations, Drive Motor, Electrical Diagrams |
| Specifications | 7-14 | Capacities, Component Data, Performance Data, Torque Requirements, Lubrication, Pressure Settings, Serial Number Locations, Limit Switches |
| General Maintenance Guidelines | 15-17 | Safety and Workmanship, Cleanliness, Component Removal and Installation, Hydraulic System Maintenance, Lubrication |
| Cylinder Theory and Repair | 18-22 | Cylinder Theory of Operation, Valve Theory, Cylinder Checking Procedures, Cylinder Removal and Installation, Cylinder Repair, Tilt Alarm Switch |
| Pressure Setting Procedures | 23-27 | Battery Powered Machine Pressure Settings, Gasoline/Diesel Engine Pressure Settings, Drive Pump Start-Up, Throttle Checks and Adjustments |
| Drive System and Axle Maintenance | 28-35 | Throttle Checks (Deutz), Oscillating Axle Lockout Cylinder Bleeding, Piston Drive Motor Disassembly, Battery Powered Drive Motor Maintenance |
| Torque Hub and Brake Procedures | 36-48 | Drive Torque Hub Disassembly, Roll Test, Leak Test, Drive Torque Hub/Brake 4WD Front, Drive Brake 2WD/4WD Rear |
| Fuel Systems and Maintenance Schedules | 49-52 | Dual Fuel/Lpg System, Freewheeling Feature, Preventive Maintenance and Inspection Schedule |
| Troubleshooting | 53-86 | General, Platform Elevation System Troubleshooting, Chassis Troubleshooting, Electrical System Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Hydraulic Filter - Nominal Micron Rating | 25 Microns | p. 7 |
| Hydraulic Filter Element Replacement Interval | 250 hours | p. 11 |
| Hydraulic Oil Tank Capacity | 64.4 liters | p. 7 |
| Fuel Tank Capacity | 56.8 liters | p. 7 |
| Gasoline Engine Oil Capacity (w/filter) | 3.2 liters | p. 7 |
| Diesel Engine Oil Capacity (w/filter) | 6.5 liters | p. 7 |
| CM25RT |
| Platform Capacity (CM25RT) | 900 kg | p. 7 |
| CM33RT |
| Platform Capacity (CM33RT) | 680 kg | p. 7 |
| CM40RT |
| Platform Capacity (CM40RT) | 450 kg | p. 7 |
