From cylinder repair to drive torque hub rebuilds to pressure settings for both two and four wheel steer machines, the JLG 25RTS, 33RTS, 40RTS service manual PDF walks the hydraulic, drive, brake, and electrical systems on these Sizzor Lifts end to end, 84 pages of factory procedure under OEM number 3120826. Hydraulic schematics trace oil flow from the piston pump through the lift circuit, while wiring diagrams map platform and chassis electrics for tracking down dead controls. Nearly a quarter of the book is troubleshooting, split across platform assembly, chassis, and electrical faults. Set the lift up relief on your 25RTS to 90 bar (1300 psi), then fit a 25 micron nominal element when the hydraulic filter comes due. A lift parked at half height earns nothing. Every hour spent hunting a relief pressure keeps it parked; this bookmarked, text-searchable PDF puts the figure in front of you and gets the platform lifting again.
What's Inside This JLG 25RTS, 33RTS, 40RTS Manual
| System | Pages | Key Topics |
|---|
| Introduction - Maintenance Safety Precautions | 3-8 | General, Hydraulic System Safety, Maintenance |
| Specifications | 9-16 | Capacities, Component Data, Performance Data, Lubrication, Pressure Settings, Serial Number Locations, Limit Switches, Cylinder Specifications |
| General Servicing and Maintenance Guidelines | 17-20 | Safety and Workmanship, Cleanliness, Component Removal and Installation, Hydraulic System Theory, Relief Valves |
| Cylinder Procedures | 21-27 | Cylinder Checking Procedures, Lift Cylinder Removal and Installation, Cylinder Repair, Disassembly and Assembly |
| Switch and Throttle Adjustments | 28-33 | Tilt Alarm Switch, Limit Switch Adjustment, Drive Pump Start-Up, Throttle Checks and Adjustments (Ford and Deutz), Automatic Choke Adjustment |
| Hydraulic Component Start-Up and Pressure Settings | 34-38 | Hydraulic Component Start-Up, Pressure Setting Procedures (2 W/S and 4 W/S), Oscillating Axle Lockout Cylinder Bleeding |
| Drive System Components | 39-56 | Lockout Cylinder Check, Piston Drive Motor, Drive Torque Hub (2WD/4WD), Drive Torque Hub/Brake (4WD Front) |
| Brake and Fuel Systems | 57-64 | Drive Brake (2WD/2WS), Dual Fuel/Lpg System, Freewheeling Feature, Preventive Maintenance and Inspection Schedule |
| Troubleshooting | 65-84 | Troubleshooting Information, Platform Assembly Troubleshooting, Chassis Troubleshooting, Electrical System Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Piston Hydraulic Pump displacement | 45.9 cm3 (2.8 in.3) | p. 20 |
| Gear Hydraulic Pump displacement | 10.5 cm3 (0.6 in.3) | p. 20 |
| Drive Motor displacement | 6.3 cm3 (2.48 in.3) | p. 9 |
| Hydraulic Filter rating | 25 Microns Nominal | p. 9 |
| Lift Up Relief Pressure | 90 bar (1300 psi) | p. 12 |
| Leveling Jacks Valve Relief Pressure | 90 bar (1300 psi) | p. 12 |
| Sun - 7/8 hex M20 x 1.5 thds holding valve torque | 30 - 35 ft lb (41 - 48 Nm) | p. 26 |
| Sun - 1-1/8 hex 1 - 14 UNS thds holding valve torque | 45 - 50 ft lb (61 - 68 Nm) | p. 26 |
| Hydraulic Oil Tank Capacity | 64.4 liters | p. 9 |
| Fuel Tank Capacity | 56.8 liters | p. 9 |
| Gasoline Engine Crankcase Capacity (w/filter) | 3.2 liters | p. 9 |
| Diesel Engine Crankcase Capacity (w/filter) | 6.5 liters | p. 9 |
