Rev A2, April 2017
Serial Number Range:
from GTH0813-16606 to GTH0816-21572
from GTH0816E-10000 to GTH0816E-10699
from GTH08E-10700
Content:
INTRODUCTION
Important Information 
Find a Manual for this Model 
Serial Number Legend 
Section 1. SAFETY RULES
General Safety Rules 
Section 2. SPECIFICATIONS
Machine Specifications
Performance Specifications
Hydraulic Oil Specifications
Hydraulic Component Specifications
Manifold Component Specifications
Air Conditioner Refrigerant Specifications 
DEF Storage Specifications 
Deutz TCD3.6 L4 Engine Specifications 
Deutz TCD3.6 L4 T4F Engine Specifications
Perkins 1104D-E44TA Engine Specifications 
Perkins 854E-E34TA Engine Specifications 
Dana VDT12000 Transmission Specifications
Carraro 26.27M Drive Axle Specifications 
Hydraulic Hose and Fitting Torque Specifications 
Torque Procedure 
Section 3. REPAIR PROCEDURES
Introduction
Boom Components 
1-1 Boom Proximity Switch 
How to Test a Proximity Switch
How to Adjust the Boom Angle Proximity Switch
1-2 Boom
How to Replace the Boom Wear Pads 
How to Remove the Lifting Fork Frame 
How to Replace the Retraction Chain
How to Replace the Extension Chains
How to Remove the Boom 
How to Disassemble the Boom 
1-3 Boom Lift Cylinder 
1-4 Boom Extension Cylinder 
1-5 Fork Level Cylinder 
1-6 Hydraulic Hoses 
How to Adjust the Fork Level Cylinder and/or Auxiliary Hose
How to Replace the Fork Level Cylinder and/or Auxiliary Hoses
Operators Compartment 
2-1 Operators Compartment
2-2 Machine Controls 
How to Remove the Steering Column
How to Remove the Steering Wheel 
How to Remove the Steer Orbitral 
How to Remove the Joystick - Models with Single Joystick
How to Remove the Joystick - Models with Dual Joysticks 
How to Remove the Brake Pedal Assembly 
How to Remove the Gauge Cluster Assembly
Fuel and Hydraulic Tanks
3-1 Fuel and Hydraulic Tanks
Engines
4-1 Engines
How to Repair the Perkins 1104D-E44TA Engine 
How to Repair the Perkins 854E-34TA Engine
How to Repair the Deutz TCD3.6 Engine 
4-2 Engine Fault Codes
Transmission 
5-1 Transmission 
Hydraulic Pump 
6-1 Hydraulic Pump 
How to Test the Function Pump
How to Remove the Function Pump 
How to Install the Function
How to Prime the Function Pump 
How to Adjust the Function Pump Standby Pressure
How to Adjust the Function Pump Pressure Compensator 
Manifolds
7-1 Primary Function Manifold Components - Models with Single Joystick 
7-2 Primary Function Manifold Components - Models with Dual Joysticks 
7-3 Secondary Function Manifold Components 
7-4 Auxiliary Manifold (option) and Brake Manifold Components 
7-5 Valve Adjustments - Secondary Function Manifold 
How to Set the Steer System Pressure 
How to Set the Parking Brake System Pressure 
How to Set the Differential Lock/Joystick System Pressure 
How to Set the Rear Lock-up System Pressure 
7-6 Valve Coils 
Axle 
8-1 Axles
Section 4. FAULT CODES
Introduction
Diagnostic Display 
Diagnostic Display
Deutz TCD3.6 Engine Fault Codes
Perkins 1104 Engine Fault Codes
Section 5. SCHEMATICS
Introduction
Fuse Panel Layout (to 20629) 
Fuse Panel Layout (from 20630 to 21535)
Deutz TCD3.6 T4F Module (from 21536, 16E-10000) 
Electrical Component & Wire Color Abbreviation Legend 
Telematics Connector Pin Legend 
Electrical Symbol Legend
Hydraulic Symbols Legend
Electrical Schematics - Harness Maps
Harness Map - Control System Power Single Joystick (to 15-20661) 
Harness Map - Control System Ground Single Joystick (to 15-20661)
Harness Map - Control System Power Single Joystick (from 15-20662 to 21535) 
Harness Map - Control System Ground Single Joystick (from 15-20662 to 21535) 
Harness Map - Control System Power Single Joystick (from 15-21536, 16E-10000) 
Harness Map - Control System Ground Single Joystick (from 15-21536, 16E-10000) 
Harness Map - Control System Power Dual Joystick (to 15-20661) 
Harness Map - Control System Ground Dual Joystick (to 15-20661) 
Harness Map - Control System Power Dual Joystick (from 15-20662 to 21535) 
Harness Map - Control System Ground Dual Joystick (from 15-20662 to 21535) 
Harness Map - Control System Power Dual Joystick (from 15-21536, 16E-10000) 
Harness Map - Control System Ground Dual Joystick (from 15-21536, 16E-10000)
Harness Map - Deutz TCD3.6 T3_T4i Engine Battery Power and Ground
Harness Map - Deutz TCD3.6 T4F Engine Battery Power and Ground 
Harness Map - Perkins 1104D Engine Battery Power and Ground 
Harness Map - Perkins 854E T4i Engine Battery Power and Ground 
Harness Map - Perkins 854E T4i Engine Battery Power and Ground 
Harness Map - Options Auxiliary Hydraulics, Beacon and 3rd Gear Lockout
Harness Map - Options Work Lights (to 15-21456)
Harness Map - Options Work Lights (from 15-21457, 16E-10000)
Harness Map - Options Road Lights (to 15-20456) 
Harness Map - Options Road Lights (from 15-21457, 16E-10000)
Harness Map - Options Enclosed Cab with Heater
Harness Map - Options Enclosed Cab with HVAC
Electrical Schematics
Electrical Schematic - View 1 (to 15-20661) 
Electrical Schematic - View 2 (to 15-20661) 
Electrical Schematic - View 1 (from 15-20662 to 21456) 
Electrical Schematic - View 2 (from 15-20662 to 21456)
Electrical Schematic - View 1 (from 15-21457 to 21535)
Electrical Schematic - View 2 (from 21457 to 21535) 
Electrical Schematic - View 1 (from 15-21536, 16E-10000) 
Electrical Schematic - View 2 (from 21536, 16E-10000) 
Hydraulic Schematics 
Hydraulic Schematic - Single Joystick (to 19528) 
Hydraulic Schematic - Single Joystick (from 19529, 16E-10000) 
Hydraulic Schematic - Dual Joystick (to 19528)
Hydraulic Schematic - Dual Joystick (from 19529, 16E-10000)
             
            
            
                Rev A2, April 2017
Serial Number Range:
from GTH0813-16606 to GTH0816-21572
from GTH0816E-10000 to GTH0816E-10699
from GTH08E-10700
Content:
INTRODUCTION
Important Information 
Find a Manual for this Model 
Serial Number Legend 
Section 1. SAFETY RULES
General Safety Rules 
Section 2. SPECIFICATIONS
Machine Specifications
Performance Specifications
Hydraulic Oil Specifications
Hydraulic Component Specifications
Manifold Component Specifications
Air Conditioner Refrigerant Specifications 
DEF Storage Specifications 
Deutz TCD3.6 L4 Engine Specifications 
Deutz TCD3.6 L4 T4F Engine Specifications
Perkins 1104D-E44TA Engine Specifications 
Perkins 854E-E34TA Engine Specifications 
Dana VDT12000 Transmission Specifications
Carraro 26.27M Drive Axle Specifications 
Hydraulic Hose and Fitting Torque Specifications 
Torque Procedure 
Section 3. REPAIR PROCEDURES
Introduction
Boom Components 
1-1 Boom Proximity Switch 
How to Test a Proximity Switch
How to Adjust the Boom Angle Proximity Switch
1-2 Boom
How to Replace the Boom Wear Pads 
How to Remove the Lifting Fork Frame 
How to Replace the Retraction Chain
How to Replace the Extension Chains
How to Remove the Boom 
How to Disassemble the Boom 
1-3 Boom Lift Cylinder 
1-4 Boom Extension Cylinder 
1-5 Fork Level Cylinder 
1-6 Hydraulic Hoses 
How to Adjust the Fork Level Cylinder and/or Auxiliary Hose
How to Replace the Fork Level Cylinder and/or Auxiliary Hoses
Operators Compartment 
2-1 Operators Compartment
2-2 Machine Controls 
How to Remove the Steering Column
How to Remove the Steering Wheel 
How to Remove the Steer Orbitral 
How to Remove the Joystick - Models with Single Joystick
How to Remove the Joystick - Models with Dual Joysticks 
How to Remove the Brake Pedal Assembly 
How to Remove the Gauge Cluster Assembly
Fuel and Hydraulic Tanks
3-1 Fuel and Hydraulic Tanks
Engines
4-1 Engines
How to Repair the Perkins 1104D-E44TA Engine 
How to Repair the Perkins 854E-34TA Engine
How to Repair the Deutz TCD3.6 Engine 
4-2 Engine Fault Codes
Transmission 
5-1 Transmission 
Hydraulic Pump 
6-1 Hydraulic Pump 
How to Test the Function Pump
How to Remove the Function Pump 
How to Install the Function
How to Prime the Function Pump 
How to Adjust the Function Pump Standby Pressure
How to Adjust the Function Pump Pressure Compensator 
Manifolds
7-1 Primary Function Manifold Components - Models with Single Joystick 
7-2 Primary Function Manifold Components - Models with Dual Joysticks 
7-3 Secondary Function Manifold Components 
7-4 Auxiliary Manifold (option) and Brake Manifold Components 
7-5 Valve Adjustments - Secondary Function Manifold 
How to Set the Steer System Pressure 
How to Set the Parking Brake System Pressure 
How to Set the Differential Lock/Joystick System Pressure 
How to Set the Rear Lock-up System Pressure 
7-6 Valve Coils 
Axle 
8-1 Axles
Section 4. FAULT CODES
Introduction
Diagnostic Display 
Diagnostic Display
Deutz TCD3.6 Engine Fault Codes
Perkins 1104 Engine Fault Codes
Section 5. SCHEMATICS
Introduction
Fuse Panel Layout (to 20629) 
Fuse Panel Layout (from 20630 to 21535)
Deutz TCD3.6 T4F Module (from 21536, 16E-10000) 
Electrical Component & Wire Color Abbreviation Legend 
Telematics Connector Pin Legend 
Electrical Symbol Legend
Hydraulic Symbols Legend
Electrical Schematics - Harness Maps
Harness Map - Control System Power Single Joystick (to 15-20661) 
Harness Map - Control System Ground Single Joystick (to 15-20661)
Harness Map - Control System Power Single Joystick (from 15-20662 to 21535) 
Harness Map - Control System Ground Single Joystick (from 15-20662 to 21535) 
Harness Map - Control System Power Single Joystick (from 15-21536, 16E-10000) 
Harness Map - Control System Ground Single Joystick (from 15-21536, 16E-10000) 
Harness Map - Control System Power Dual Joystick (to 15-20661) 
Harness Map - Control System Ground Dual Joystick (to 15-20661) 
Harness Map - Control System Power Dual Joystick (from 15-20662 to 21535) 
Harness Map - Control System Ground Dual Joystick (from 15-20662 to 21535) 
Harness Map - Control System Power Dual Joystick (from 15-21536, 16E-10000) 
Harness Map - Control System Ground Dual Joystick (from 15-21536, 16E-10000)
Harness Map - Deutz TCD3.6 T3_T4i Engine Battery Power and Ground
Harness Map - Deutz TCD3.6 T4F Engine Battery Power and Ground 
Harness Map - Perkins 1104D Engine Battery Power and Ground 
Harness Map - Perkins 854E T4i Engine Battery Power and Ground 
Harness Map - Perkins 854E T4i Engine Battery Power and Ground 
Harness Map - Options Auxiliary Hydraulics, Beacon and 3rd Gear Lockout
Harness Map - Options Work Lights (to 15-21456)
Harness Map - Options Work Lights (from 15-21457, 16E-10000)
Harness Map - Options Road Lights (to 15-20456) 
Harness Map - Options Road Lights (from 15-21457, 16E-10000)
Harness Map - Options Enclosed Cab with Heater
Harness Map - Options Enclosed Cab with HVAC
Electrical Schematics
Electrical Schematic - View 1 (to 15-20661) 
Electrical Schematic - View 2 (to 15-20661) 
Electrical Schematic - View 1 (from 15-20662 to 21456) 
Electrical Schematic - View 2 (from 15-20662 to 21456)
Electrical Schematic - View 1 (from 15-21457 to 21535)
Electrical Schematic - View 2 (from 21457 to 21535) 
Electrical Schematic - View 1 (from 15-21536, 16E-10000) 
Electrical Schematic - View 2 (from 21536, 16E-10000) 
Hydraulic Schematics 
Hydraulic Schematic - Single Joystick (to 19528) 
Hydraulic Schematic - Single Joystick (from 19529, 16E-10000) 
Hydraulic Schematic - Dual Joystick (to 19528)
Hydraulic Schematic - Dual Joystick (from 19529, 16E-10000)