Service Manual

Groundsmaster 580--D
Page 4 -- 1
Table of Contents
Rev. G
Chapter 4
Hydraulic System
Table of Contents
NOTE: See Chapter 9 -- Foldout Diagrams for Hydraulic
Schematics
SPECIFICATIONS 2.............................
GENERAL INFORMATION 3.....................
Hydraulic Hoses 3.............................
Hydraulic Fitting Installation 3...................
Pushing or Towing 5...........................
Draining and Refilling System 5.................
HYDRAULIC FLOW DIAGRAMS 6................
Typical Circuits -- Engine Running 6..............
Typical Circuits -- Mowing 10....................
SPECIAL TOOLS 13............................
TROUBLESHOOTING 14........................
TESTING 23...................................
TEST NO. 1: Traction Circuit Working Pressure
and Relief Pressure 24........................
TEST NO. 2: Traction Circuit Charge Pressure 25.
TEST NO. 3: Steering Circuit Working Pressure
and Relief Pressure 26........................
TEST NO. 4: Lift Circuit Working Pressure and
Relief Pressure 27............................
TEST NO. 5: Counterbalance Pressure 28........
Diagnosing Cutting Performance Problems 28.3...
Deck Motor Internal Leakage Test 28.4...........
TEST NO. 6: Deck Drive Circuit Working
Pressure and Relief Pressure 29...............
ADJUSTMENTS 30.............................
Traction Control Neutral Adjustment 30...........
Traction Control Rod Adjustment 31..............
Cruise Control Adjustment 31...................
TRACTION DRIVE SYSTEM REPAIRS 32.........
Mow/Transport Solenoid Service 32..............
Variable Displacement Pump Removal and
Installation 33................................
Wheel Motor Removal and Installation 35.........
PTO SYSTEM REPAIRS 36......................
PTO Valve Block Service 36....................
PTO Valve Block Service (S/N 50001 and Up) 36.1
PTO Pump Removal and Installation 38..........
PTO Pump Repair (Models 30580 and 30581) 38.1
PTO Pump Repair (Models 30582 and 30583) 38.2
Deck Motor Removal and Installation 39..........
Deck Motor Repair 40..........................
Deck Motor Repair (P/N 94--4907) 40.1..........
Wing Deck Hose Replacement
(S/N 50001 and Up) 40.3.....................
Wing Deck Motor Hydraulic Hose Replacement 41.
AUXILARY (LIFT/COUNTERBALANCE) SYSTEM
REPAIRS 42..................................
Float/Traction Assist Manifold Block Service 42....
Steering/Auxiliary Pump Removal and
Installation 44................................
Steering/Auxiliary Pump Repair
(Models 30582 and 30583) 44.1...............
Steering/Auxiliary Pump Repair
(Models 30580 and 30581) 45.................
Front Lift Cylinder Removal and Installation 46....
Front Lift Cylinder Repair 46....................
Wing Lift Cylinder Removal and Installation 48
....
Wing
Lift Cylinder Repair 48....................
Lift Control Valve Removal and Installation 50.....
Lift Control Valve Repair 50.....................
STEERING SYSTEM REPAIRS 52................
Steering Cylinder Removal and Installation 52.....
Steering Cylinder Repair 52.....................
Steering Control Unit Removal and Installation 54..
Steering Control Unit Repair (Models 30580
and 30581) 54.1.............................
Steering Control Unit Repair (Models 30582
and 30583) 54.1.............................
HYDRAULIC RESERVOIR AND FILTER 55........
Flushing the Hydraulic System 55...............
Inspecting Reservoir Parts 56...................
SAUER/SUNDSTRAND (DANFOSS) M46--AXIALPIS-
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SAUER/SUNDSTRAND (DANFOSS) M46--AXIALPIS-
TON PUMPS AND MOTORS REPAIR MANUAL
VICKERS GEAR PUMP OVERHAUL MANUAL
HALDEX/BARNES G20 & G30 SERIES HYDRAULIC
GEAR PUMPS INSPECTION/SERVICING
EATON CHAR--LYNN STEERING CONTROL UNITS
REPAIR INFORMATION
EATON CHAR--LYNN 4000 COMPACT SERIES DISC
VALVE GEROLER MOTOR REPAIR INFORMATION