JLG G12-55A Parts Manual User Manual
Illustrated parts manual
This manual is related to the following products:
Table of contents
Document Outline
- 3126020 G10-55A & G12-55A Parts Manual
- Effectivity Page
- Table of Contents
- Section 1 Frame & Attaching Parts
- Section 2 Boom
- Figure 2-1 First Boom Section
- Figure 2-2 Bearings, Pads, Spacers & Shims, (First Boom Section)
- Figure 2-3 Second Boom Section
- Figure 2-4 Bearings, Pads, Spacers & Shims, (Second Boom Section)
- Figure 2-5 Third Boom Section
- Figure 2-6 Bearings, Pads, Spacers & Shims, (Third Boom Section)
- Figure 2-7 Fourth Boom Section
- Figure 2-8 Bearings, Pads, Spacers & Shims, (Fourth Boom Section)
- Figure 2-9 Quick Switch Assembly
- Section 3 Attachments
- Figure 3-1 Tilt Carriage
- Figure 3-2 Buckets
- Figure 3-3 Side Tilt Carriage
- Figure 3-4 Truss Boom
- Figure 3-5 Truss Boom With Winch
- Figure 3-6 100 Degree Swing Carriage With Side Shift
- Figure 3-7 Sheet Material Handler
- Figure 3-8 100 Degree Drywall Swing Carriage Assembly
- Figure 3-9 Swing Carriage
- Figure 3-10 Personnel Platform
- Figure 3-11 Fork Mounted Platform
- Figure 3-12 Forks
- Figure 3-13 Fork Mounted Lifting Hook
- Figure 3-14 Grapple Bucket
- Figure 3-15 Fork Pin Lock Installation
- Figure 3-16 Dual Fork Positioning Carriage Assembly
- Figure 3-17 6 Ft Mast With 72 In Carriage
- Figure 3-18 8 Ft Standard Mast
- Figure 3-19 8 Ft Side Tilt Electric Mast
- Figure 3-20 50 in Side Shift Carriage
- Section 4 Engine & Attaching Parts
- Figure 4-1 Engine Assembly - John Deere
- Figure 4-2 Engine Assembly - Perkins
- Figure 4-3 Engine Assembly - Cummins
- Figure 4-4 John Deere Engine
- Figure 4-5 Perkins Engine
- Figure 4-6 Cummins Engine
- Figure 4-7 Fuel Tank & Lines
- Figure 4-8 Radiator Assembly - John Deere Engine
- Figure 4-9 Radiator Assembly - Perkins Engine
- Figure 4-10 Radiator Assembly - Cummins Engine
- Figure 4-11 Air Cleaner Installation - John Deere Engine
- Figure 4-12 Air Cleaner Installation - Perkins Engine
- Figure 4-13 Air Cleaner Installation - John Deere Engine
- Figure 4-14 Air Cleaner Installation - Perkins Engine
- Figure 4-15 Air Cleaner Installation - Cummins Engine
- Figure 4-16 Exhaust Installation - John Deere Engine
- Figure 4-17 Exhaust Installation - Perkins Engine
- Figure 4-18 Exhaust Installation - Cummins Engine
- Figure 4-19 ZF Transmission
- Figure 4-20 ZF Transmission - Converter & Input
- Figure 4-21 ZF Transmission - Gearbox Housing
- Figure 4-22 ZF Transmission - Forward Gear Group
- Figure 4-23 ZF Transmission - Reverse Gear Group
- Figure 4-24 ZF Transmission - 1st Shaft Group
- Figure 4-25 ZF Transmission - 2nd Shaft Group
- Figure 4-26 ZF Transmission - 3rd Shaft Group
- Figure 4-27 ZF Transmission - 4th Shaft Group
- Figure 4-28 ZF Transmission - Power Take-Off
- Figure 4-29 ZF Transmission - Control Unit & Pressure Regulator
- Figure 4-30 ZF Transmission - Gearshift System
- Figure 4-31 ZF Transmission - Oil Pump, Filter & Dipstick
- Figure 4-32 ZF Transmission - Transfer Box
- Section 5 Drive Train
- Figure 5-1 Front Axle Assembly
- Figure 5-2 Front Axle - Central Housing & Steering
- Figure 5-3 Front Axle - Differential
- Figure 5-4 Front Axle - Hub Reduction
- Figure 5-5 Front Axle - Brakes
- Figure 5-6 Rear Axle Assembly
- Figure 5-7 Rear Axle - Central Housing & Steering
- Figure 5-8 Rear Axle - Differential
- Figure 5-9 Rear Axle - Hub Reduction
- Figure 5-10 Rear Axle - Brakes
- Figure 5-11 Drive Shaft
- Figure 5-12 Tires & Rims
- Section 6 Cab
- Figure 6-1 Cab Assembly
- Figure 6-2 Cab
- Figure 6-3 Suspension Seat
- Figure 6-4 Instrument Panel
- Figure 6-5 Heating Components
- Figure 6-6 Open Cab Heater
- Figure 6-7 Air Conditioning - John Deere Engine
- Figure 6-8 Air Conditioning - Perkins Engine
- Figure 6-9 Air Conditioning - Cummins Engine
- Figure 6-10 Air Conditioning Components
- Section 7 Controls
- Section 8 Hydraulic Circuits
- Figure 8-1 Supply Circuit - John Deere Engine
- Figure 8-2 Supply Circuit - Perkins Engine
- Figure 8-3 Supply Circuit - Cummins Engine
- Figure 8-4 Dump Circuit - John Deere Engine
- Figure 8-5 Dump Circuit - Perkins Engine
- Figure 8-6 Dump Circuit - Cummins Engine
- Figure 8-7 Steer Select - John Deere Engine
- Figure 8-8 Steer Select - Perkins & Cummins Engine
- Figure 8-9 Service/Park Brake - John Deere Engine
- Figure 8-10 Service/Park Brake - Perkins & Cummins Engine
- Figure 8-11 Boom Joystick - John Deere Engine
- Figure 8-12 Boom Joystick - Perkins & Cummins Engine
- Figure 8-13 Sway Controller - John Deere Engine
- Figure 8-14 Sway Controller - Perkins Engine
- Figure 8-15 Sway Controller - Cummins Engine
- Figure 8-16 Auxiliary Controller - John Deere Engine
- Figure 8-17 Auxiliary Controller - Perkins & Cummins Engine
- Figure 8-18 Outrigger Controller - John Deere Engine
- Figure 8-19 Outrigger Controller - Perkins & Cummins Engine
- Figure 8-20 Lift Cylinder - John Deere Engine
- Figure 8-21 Lift Cylinder - Perkins & Cummins Engine
- Figure 8-22 Crowd Cylinder - John Deere Engine
- Figure 8-23 Crowd Cylinder - Perkins & Cummins Engine
- Figure 8-24 Tilt & Tilt Compensating Cylinders - John Deere Engine
- Figure 8-25 Tilt & Tilt Compensating Cylinders - Perkins & Cummins Engine
- Figure 8-26 Auxiliary Function - John Deere Engine
- Figure 8-27 Auxiliary Function - Perkins & Cummins Engine
- Figure 8-28 Boom Hydraulics Assembly
- Figure 8-28 Boom Hydraulics Assembly
- Figure 8-28 Boom Hydraulics Assembly
- Figure 8-29 Sway Cylinder - John Deere Engine
- Figure 8-30 Sway Cylinder - Perkins Engine
- Figure 8-31 Sway Cylinder - Cummins Engine
- Figure 8-32 Outrigger Cylinders - John Deere Engine
- Figure 8-33 Outrigger Cylinders - Perkins Engine
- Figure 8-34 Outrigger Cylinders - Cummins Engine
- Section 9 Hydraulic Components
- Figure 9-1 Lift Cylinder
- Figure 9-2 Crowd Cylinder
- Figure 9-3 Tilt Cylinder
- Figure 9-4 Compensating Cylinder
- Figure 9-5 Sway Cylinder
- Figure 9-6 Stabilizer Cylinder
- Figure 9-7 Outrigger Cylinder Assembly
- Figure 9-8 Main Control Valve
- Figure 9-9 Hydraulic Pump
- Figure 9-10 Hydraulic Pump - Cummins Engine
- Figure 9-11 Hydraulic Tank Assembly - John Deere Engine
- Figure 9-12 Hydraulic Tank Assembly - Perkins Engine
- Figure 9-13 Hydraulic Tank Assembly - Cummins Engine
- Figure 9-14 Brake Valve
- Figure 9-15 Hydraulic Manifold
- Figure 9-16 Steer Select Valve - John Deere Engine
- Figure 9-17 Steer Select Valve - Perkins & Cummins Engine
- Figure 9-18 180 Degree Swing Carriage Cylinder
- Figure 9-19 Grapple Bucket Cylinder
- Figure 9-20 Side Tilt Carriage Cylinder
- Figure 9-21 72” 90 Degree Swing Carriage Cylinder
- Figure 9-22 50 in Side Shift Carriage Cylinder
- Section 10 Electrical
- Figure 10-1 Battery & Cables - John Deere & Perkins Engine
- Figure 10-2 Battery & Cables - Cummins Engine
- Figure 10-3 Engine Harness - John Deere Engine
- Figure 10-4 Engine Harness - Perkins Engine
- Figure 10-5 Engine Harness - Cummins Engine
- Figure 10-6 Vec Grid Htr Pwr Harness- Cummins Engine
- Figure 10-7 Chassis Harness - John Deere Engine
- Figure 10-8 Chassis Harness - Perkins & Cummins Engine
- Figure 10-9 Dash Harness
- Figure 10-10 Transmission Relay Harness - John Deere Engine
- Figure 10-11 Transmission Relay Harness - Perkins Engine
- Figure 10-12 Enclosed Cab Harness
- Figure 10-13 VEC Options Harness - John Deere Engine
- Figure 10-14 VEC Options Harness - Perkins Engine
- Figure 10-15 Auxiliary Electrics
- Figure 10-16 Power Distribution Box Installation
- Figure 10-17 Cab Work Light Harness
- Figure 10-18 Auxiliary Electric Harness
- Figure 10-19 A/C Harness
- Section 11 Decals
- Section 12 Options
- Figure 12-1 Work Light Package
- Figure 12-2 Cold Start Installation - John Deere Engine
- Figure 12-3 Block Heater Assembly - John Deere Engine
- Figure 12-4 Block Heater Assembly - Perkins Engine
- Figure 12-5 Fender Installation
- Figure 12-6 Fuel/Water Separator Installation - John Deere
- Figure 12-7 Winch Installation
- Figure 12-8 Truss Boom Winch
- Figure 12-9 Winch Motor
- Figure 12-10 Sway Cylinder Valve
- Figure 12-11 Sway Cylinder
- Figure 12-12 Road Lights Installation
- Figure 12-13 Pintle Hook Installation
- Figure 12-14 Swing Cylinder
- Figure 12-15 Top Cab Glass Shield
- Figure 12-16 Front Cab Glass Shield
- Figure 12-17 Boom Work Light Harness
- Figure 12-18 Work Light Cab Harness
- Figure 12-19 Road Light & Frame Harness
- Figure 12-20 Road Light & Cab Harness
- Figure 12-21 Winch
- Figure 12-22 Arctic Package - Perkins Engine
- Figure 12-23 Arctic Package - Cummins Engine
- Recommended Spare Parts
- Part Number Index