November 2016
Table of Contents
viii GS-2669 DC • GS-3369 DC • GS-4069 DC Part No. 1272220GT
Ground Controls ................................................................................................. 32
4-1 Software Revision Level ................................................................................. 33
4-2 Machine Setup ............................................................................................... 34
4-3 Auxiliary Platform Lowering ............................................................................ 35
4-4 Level Sensor - Models without Outriggers ..................................................... 35
4-5 Level Sensor - Models with Outriggers .......................................................... 38
4-6 Service Override Mode ................................................................................... 40
Hydraulic Pump .................................................................................................. 42
5-1 Hydraulic Pump .............................................................................................. 42
How to Test the Hydraulic Pump ..................................................................... 42
How to Remove the Hydraulic Pump .............................................................. 42
How to Calibrate the Hydraulic Pump ............................................................. 43
Manifolds ............................................................................................................. 45
6-1 Function Manifold Components...................................................................... 45
6-1a Function Manifold Components ................................................................... 46
6-2 Valve Adjustments - Function Manifold .......................................................... 49
How to Adjust the System Relief Valve ........................................................... 49
How to Adjust the Oscillate Relief Valve ......................................................... 51
How to Adjust the Steer Relief Valve .............................................................. 53
How to Adjust the Platform Up Relief Valve - Models with Platform Overload55
How to Adjust the Platform Up Relief Valve - Models without Platform Overload
................................................................................................................. 65
6-3 Outrigger Manifold Components .................................................................... 67
6-4 Valve Coils...................................................................................................... 68
Hydraulic Tank .................................................................................................... 70
7-1 Hydraulic Tank ............................................................................................... 70