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Groundsmaster 4100--D/4110--D Hydraulic SystemPage 4 -- 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 2............................
GENERAL INFORMAT ION 3.....................
Operator ’s Manual 3..........................
Check Hydraulic Fluid 3.......................
Relieving Hydraulic System Pressure 3..........
Towing Traction Unit 4.........................
Traction Circuit Component Failure 4............
Hydraulic Hoses 5............................
Hydraulic Hose and Tube Installation 6..........
Hydraulic Fitting Installation 7..................
HYDRAULIC SCHEMATIC 9.....................
HYDRAULIC FLOW DIAGRAMS 10...............
Traction Circuit: LOW Speed (Mow) 10..........
Traction Circuit: HI Speed (Transport) 12.........
Lower Cutting Deck 14........................
Raise Cutting Deck 16.........................
Mow Circuit 18...............................
Mow Circuit Cutting Deck Blade Braking 20......
Steering Circuit 22............................
Engine Cooling Fan Circuit 24..................
SPECIAL TOOLS 26............................
TROUBLESHOOTING 31........................
TESTING 38...................................
Traction Circuit Charge Pressure 40.............
Traction Circuit Relief Pressure 42..............
Counterbalance Pressure 44...................
Reverse Traction Circuit Reducing Valve (PR)
Pressure 46................................
Rear Traction Circuit Relief Valve (RV) Pressure 48
Piston (Traction) Pump Flow 50.................
Cutting Deck Circuit Pressure 52................
PTO Relief Pressure 54........................
Cutting Deck Motor Case Drain Leakage 56......
Lift/Lower Circuit Relief Pressure 58.............
Steering Circuit Relief Pressure 60..............
Steering Cylinder Internal Leakage 62...........
Engine Cooling Fan Circuit 64..................
Gear Pump Flow 66...........................
ADJUSTMENTS 68.............................
Adjust Control Manifold Relief Valves 68.........
SERVICE AND REPAIRS 69.....................
General Precautions for Removing and
Installing Hydraulic System Components 69....
Check Hydraulic Lines and Hoses 70............
Priming Hydraulic Pumps 70...................
Flush Hydraulic System 71.....................
Filtering Closed--Loop Traction Circuit 72........
Charge Hydraulic System 73...................
Hydraulic Reservoir 74........................
Radiator and Oil Cooler Assembly 76............
Gear Pump 78................................
Gear Pump Service 82........................
Piston
(Traction) Pump 84.....................
Piston (Traction) Pump Service 88..............
Rear Axle Motor 90...........................
Front Wheel Motors 92........................
Rear Axle and Front Wheel Motor Service 94.....
Rear Traction Manifold 96......................
Rear Traction Manifold Service 98..............
Control Manifold Cartridge Valve Service 99......
Combination Manifold 100.....................
Combination Manifold Service 102..............
Steering Control Valve 104.....................
Steering Control Valve Service 106..............
Steering Cylinder 108.........................
Steering Cylinder Service 110..................
Engine Cooling Fan Motor 112..................
Engine Cooling Fan Motor Service 116..........
Cutting Dec k Motor 119........................
Cutting Deck Motor Service (Sauer--Danfoss) 120.
Cutting Deck Motor Service (Casappa) 124.......
PTO Manifolds 126............................
PTO Manifold Service 128.....................
Cutting Deck Lift Cylinders 130.................
Wing Deck Lift Cylinders 132...................
Lift Cylinder Service 134.......................
SAUER--DANFOSS H1 CLOSED CIRCUIT AXIAL PIS-
TON PUMPS SERVICE MANUAL
SAUER--DANFOSS K and L FRAME VARIABLE MO-
TORS SERVICE MANUAL
EATON PARTS AND REPAIR INFORMATION: 5
SERIES STEERING CONTROL UNITS
Hydraulic
System