Name: Genie GTH-844
Brand: Genie
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Service and Repair Manual

Serial Number Range

GTH-844

from GTH0813-16606 to

GTH0816-

21572

from GTH0816E-

10000 to

GTH0816E-

10699

from GTH08E-

10700

This manual includes:

Repair procedures

Fault Codes

Electrical and

Hydraulic Schematics

For detailed maintenance

procedures, refer to the

appropriate Maintenance

Manual for your

machine.

Part No. 1272854

Rev A2

April 2017

Default Chapter2
- Find a Manual for this Model2
- April4
- Serial Number Legend4
Safety Rules5
- April6
- Table of Contents7
Specifications13
- Machine Specifications13
- Performance Specifications14
- Hydraulic Oil Specifications15
- Hydraulic Component Specifications18
- Manifold Component Specifications19
- Air Conditioner Refrigerant Specifications19
- DEF Storage Specifications20
- Deutz TCD3.6 L4 Engine Specifications21
- Deutz TCD3.6 L4 T4F Engine Specifications22
- Perkins 1104D-E44TA Engine Specifications23
- Perkins 854E-E34TA Engine Specifications24
- Dana VDT12000 Transmission Specifications25
- Carraro 26.27M Drive Axle Specifications25
- Hydraulic Hose and Fitting Torque Specifications26
- Torque Procedure27
Repair Procedures29
- Introduction29
Boom Components31
- Boom Proximity Switch31
  - How to Test a Proximity Switch31
  - How to Adjust the Boom Angle Proximity Switch32
- Boom32
- Boom Lift Cylinder40
- Boom Extension Cylinder41
- Fork Level Cylinder41
- Hydraulic Hoses42
  - How to Adjust the Fork Level Cylinder And/Or Auxiliary Hose42
  - How to Replace the Fork Level Cylinder And/Or Auxiliary Hoses43
Operator's Compartment45
- Machine Controls47
Fuel and Hydraulic Tanks51
Engines53
- How to Repair the Perkins 1104D-E44TA Engine53
- How to Repair the Perkins 854E-34TA Engine53
- How to Repair the Deutz TCD3.6 Engine53
- Engine Fault Codes54
Transmission55
Hydraulic Pump55
- How to Test the Function Pump55
- How to Remove the Function Pump56
- How to Install the Function57
- How to Prime the Function Pump57
- How to Adjust the Function Pump Standby Pressure58
- April58
- How to Adjust the Function Pump Pressure Compensator59
Manifolds60
- Primary Function Manifold Components - Models with Single Joystick60
- Primary Function Manifold Components - Models with Dual Joysticks64
- Secondary Function Manifold Components66
- Auxiliary Manifold (Option) and Brake Manifold Components68
- Valve Adjustments - Secondary Function Manifold69
- Valve Coils73
Axle75
- Axles75
Fault Codes76
- Introduction76
- Section 4 Fault Codes76
Diagnostic Display77
Deutz TCD3.6 Engine Fault Codes78
Perkins 1104 Engine Fault Codes102
Schematics104
- Introduction104
- Section 5 Schematics104
- Fuse Panel Layout (to 20629)105
- Fuse Panel Layout (from 20630 to 21535)106
- Deutz TCD3.6 T4F Module (from 21536, 16E-10000)107
- Electrical Component & Wire Color Abbreviation Legend108
- Telematics Connector Pin Legend111
- Electrical Symbol Legend113
- Hydraulic Symbols Legend114
Electrical Schematics - Harness Maps115
- April115
- Harness Map - Control System Power Single Joystick (to 15-20661)116
- Harness Map - Control System Ground Single Joystick (to 15-20661)117
- Harness Map - Control System Power Single Joystick (from 15-20662 to 21535)120
- Harness Map - Control System Ground Single Joystick (from 15-20662 to 21535)121
- Harness Map - Control System Power Single Joystick (from 15-21536, 16E-10000)124
- Harness Map - Control System Ground Single Joystick (from 15-21536, 16E-10000)125
- Harness Map - Control System Power Dual Joystick (to 15-20661)128
- Harness Map - Control System Ground Dual Joystick (to 15-20661)129
- Harness Map - Control System Power Dual Joystick (from 15-20662 to 21535)132
- Harness Map - Control System Ground Dual Joystick (from 15-20662 to 21535)133
- Harness Map - Control System Power Dual Joystick (from 15-21536, 16E-10000)136
- Harness Map - Control System Ground Dual Joystick (from 15-21536, 16E-10000)137
- Harness Map - Deutz TCD3.6 T3_T4I Engine Battery Power and Ground140
- Harness Map - Deutz TCD3.6 T4F Engine Battery Power and Ground141
- Harness Map - Perkins 1104D Engine Battery Power and Ground144
- Harness Map - Perkins 854E T4I Engine Battery Power and Ground145
- Harness Map - Perkins 854E T4I Engine Battery Power and Ground148
- Harness Map - Options Auxiliary Hydraulics, Beacon and 3Rd Gear Lockout149
- Harness Map - Options Work Lights (to 15-21456)152
- Harness Map - Options Work Lights (from 15-21457, 16E-10000)153
- Harness Map - Options Road Lights (to 15-20456)156
- Harness Map - Options Road Lights (from 15-21457, 16E-10000)157
- Harness Map - Options Enclosed Cab with Heater160
- Harness Map - Options Enclosed Cab with HVAC161
Electrical Schematics163
- Electrical Schematic - View 1 (to 15-20661)164
- Electrical Schematic - View 2 (to 15-20661)165
- Electrical Schematic - View 1 (from 15-20662 to 21456)168
- Electrical Schematic - View 2 (from 15-20662 to 21456)169
- Electrical Schematic - View 1 (from 15-21457 to 21535)172
- Electrical Schematic - View 2 (from 21457 to 21535)173
- Electrical Schematic - View 1 (from 15-21536, 16E-10000)176
- Electrical Schematic - View 2 (from 21536, 16E-10000)177
Hydraulic Schematics179
- Hydraulic Schematic - Single Joystick (to 19528)180
- Hydraulic Schematic - Single Joystick (from 19529, 16E-10000)181
- Hydraulic Schematic - Dual Joystick (to 19528)184
- Hydraulic Schematic - Dual Joystick (from 19529, 16E-10000)185

Maximum Lift Height	44 ft
Power Source	Diesel
Maximum Lift Capacity	8, 000 lbs
Lift Capacity	8, 000 lbs (3, 629 kg)
Machine Width	6.5 ft

Genie GTH-844 Service And Repair Manual

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