June 2021
Table of Contents
x GS
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-84 • GS
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-90 Part No. 1306587GT
Hydraulic Pump .................................................................................................. 75
6-1 Lift/Steer Pump .............................................................................................. 75
How to Remove the Lift/Steer Pump .............................................................. 75
6-2 Drive Pump .................................................................................................... 76
How to Remove the Drive Pump .................................................................... 76
How to Prime the Pump .................................................................................. 77
How to Adjust the Pump Neutral..................................................................... 78
Manifolds ............................................................................................................ 80
7-1 Function Manifold Components - Models with Outriggers ............................. 80
7-2 Function Manifold Components - Models without Outriggers ........................ 82
7-3 Traction Manifold Components ...................................................................... 84
7-4 Oscillate Manifold Components, GS-90 (option) ........................................... 86
7-5 Welder Manifold Components (option) .......................................................... 88
7-6 Valve Adjustments - Function Manifold ......................................................... 89
How to Adjust the System Relief Valve .......................................................... 89
How to Adjust the Steer Relief Valve .............................................................. 90
7-7 Valve Adjustments - Traction Manifold .......................................................... 91
How to Adjust the Charge Pressure Relief Valve ........................................... 91
7-8 Generator Manifold Components .................................................................. 92
7-9 Valve Adjustments - Generator Manifold ....................................................... 93
How to Adjust the Generator Voltage ............................................................. 93
7-10 Generator Relief Valve Manifold Components ............................................ 94
7-11 Valve Coils ................................................................................................... 95
Fuel and Hydraulic Tanks ................................................................................. 97
8-1 Fuel Tank ....................................................................................................... 97
8-2 Hydraulic Tank ............................................................................................... 98