Frame rails to platform console, this JLG 40ic, 45ic parts catalog PDF (OEM 3120853) breaks both lifts down assembly by assembly across 157 pages: steering and drive installations, turntable and swing components, boom, platforms, cylinders, hydraulics, electrical, and decals. Exploded views pair every callout with a factory part number, and the part number index at the back lets you work backward from a number scribbled on a core tag. Hydraulic diagrams (including manual ascent), the standard electrical diagram with harness installations, and a recommended service parts stock list round out the book. When the ground control station kills power, order the correct breaker the first time: 30 Amp on one circuit, 15 Amp on the other, both listed by part number. A wrong seal kit parks a lift for a week. Search the text layer or jump the bookmarks, confirm your number, and put the machine back in the air.
What's Inside This JLG 40ic, 45ic Parts Manual
| System | Pages | Key Topics |
|---|
| Frame | 7-48 | Steering Installations, Tire and Wheel Drive Installations, Drive Hub Assembly, Drive Motor Assembly, Drive Brake Assembly, Valves, Battery and Tilt Indicator Installations |
| Turntable | 49-68 | Mounted Components Installation, Control Valve Assembly, Swing Drive and Turntable Bearing Installations, Swing Motor Assembly, Swing Bearing Assembly |
| Boom | 69-76 | Limit Switches Installations, Main Boom Components Assembly |
| Platforms | 77-90 | Platform Components Installation, Rotator Motor/Pump/Tank Assembly, Platform Console Assembly, Controller Assembly - Drive/Steer |
| Cylinder | 91-114 | Upper Lift Cylinder Assemblies, Mid Lift Cylinder Assemblies, Lower Lift Cylinder Assemblies, Master Cylinder Assembly, Platform Rotator Cylinder Assembly, Slave Cylinder Assembly |
| Hydraulic | 115-124 | Diagram - Manual Ascent, Diagram List |
| Electrical | 125-138 | Diagrams and Diagram List, Diagram - Standard, Harness Installations |
| Decals | 139-142 | Installation |
| Recommended Service Parts Stock | 143-148 | Models Lifts Standard Parts, Models Lifts Variable Parts |
| Special Options | 149-150 | List |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Hose, Vapor length | 30.5cm | p. 35 |
| Hose, Water length | 41cm | p. 35 |
| Breaker, Circuit - 30 Amp | 30 Amp | p. 63 |
| Breaker, Circuit - 15 Amp | 15 Amp | p. 63 |
| Diode 6 Amp | 6 Amp | p. 126 |
| Relay - 75 Amp Spst (Glow Plug Relay) | 75 Amp | p. 136 |
| Resistor - 6.8 Ohms 1/4 Watt | 6.8 Ohms | p. 134 |
| Resistor 20 Ohm 12 Watt | 20 Ohm | p. 135 |
| Orifice - 1.5mm | 1.5mm | p. 27 |
| Orifice - 2mm | 2mm | p. 27 |
| Alternator - 40 Amp | 40 Amp | p. 39 |
| Breaker, Circuit - 5 Amp | 5 Amp | p. 63 |
