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Greensmaster 3150 Hydraulic SystemPage 4 -- 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 2............................
GENERAL INFORMATION 3.....................
Operator’s Manual 3...........................
Check Hydraulic System Fluid 3.................
Towing Traction Unit 4.........................
Hydraulic Hoses 4.............................
Hydraulic Hose and Tube Installation (O--Ring
Face Seal Fitting) 5..........................
Hydraulic Fitting Installation (SAE Straight Thread
O--Ring Fitting into Component Port) 6.........
HYDRAULIC SCHEMATIC 8.....................
HYDRAULIC FLOW DIAGRAMS 10...............
Traction Forward and Reverse 10................
Raise and Lower Cutting Units 12................
Mow and Backlap 14...........................
Right and Left Turn 16.........................
SPECIAL TOOLS 18............................
TROUBLESHOOTING 21........................
General Hydraulic System Problems 21..........
Traction Circuit Problems 22...................
Mow Circuit Pr oblems 23......................
Lift/Lower Circuit Problems 24..................
Steering Circuit Problems 25...................
TESTING 26...................................
Precautions for Hydraulic Testing 26.............
Charge Relief Valve Pressure Test 28............
Wheel Motor Efficiency Test 30..................
Piston (Traction) Pump Flow Test 32.............
Gear Pump (Rear Section) Flow Test 34..........
Implement Relief Valve Pressure Te st 36.........
Lower Cutting Units Relief Valve (R2)
Pressure Test 38.............................
Gear Pump (Front Section) Flow Test 40.........
Mow Circuit Relief Valve (S1R1) Pressure Test 42.
Reel Motor Case Drain Flow Test 44.............
Steering Control Valve Test 46..................
ADJUSTMENTS 49.............................
Adjust Manifold Relief Valves (R2) 49............
SERVICE AND REPAIRS 50.....................
General Precautions fo r Removing and
Installing Hydraulic System Components 50.....
Flush Hydraulic System 51......................
Filtering Closed--Loop Traction Circuit 52.........
Hydraulic System Start--up 53...................
Gear Pump 54................................
Gear Pump Service 56.........................
Piston (Traction) Pump 60......................
Piston (Traction) Pump Service 64...............
Piston Pump Crush Ring Replacement 66........
Front Wheel Motors 68.........................
Rear Wheel Motor (Optional 3WD) 70............
Wh
eel Motor Service 72........................
Cutting Reel Motors 74.........................
Cutting Reel Motor Service 78...................
Front Lift Cylinders 82..........................
Center Lift Cylinder 84.........................
Lift Cylinder Service 86.........................
Hydraulic Manifold 88..........................
Hydraulic Manifold Service 90...................
Steering Control Valve 94.......................
Steering Control Valve Service 96...............
Steering Cylinder 98...........................
Steering Cylinder Service 100...................
Leak Detector 102.............................
Hydraulic Reservoir 106........................
EATON, MEDIUM DUTY PISTON PUMP, REPAIR
INFORMATION, MODEL 70160 VARIABLE DIS-
PLACEMENT PISTON PUMP
PARKER TORQMOTOR
TM
SERVICE PROCEDURE
(TC, TB, TE, TJ, TF, TG, TH and TL SERIES)
SAUER/DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Hydraulic
System