Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . 4
Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Hydraulic Fitting Installation . . . . . . . . . . . . . . . . . . . 4
Towing Traction Unit . . . . . . . . . . . . . . . . . . . . . . . . . 6
Check Hydraulic Fluid . . . . . . . . . . . . . . . . . . . . . . . 6
HYDRAULIC SCHEMATIC . . . . . . . . . . . . . . . . . . . . . 7
HYDRAULIC FLOW DIAGRAMS . . . . . . . . . . . . . . . . 8
Traction Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Lift Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mow Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hydraulic Pressure Test Kit . . . . . . . . . . . . . . . . . . 14
Hydraulic Tester (Pressure and Flow) . . . . . . . . . 14
Hydraulic Test Fitting Kit . . . . . . . . . . . . . . . . . . . . . 15
Measuring Container . . . . . . . . . . . . . . . . . . . . . . . 15
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 16
TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Test No. 1: Traction Circuit Working Pressure . . 20
Test No. 2: Mow Circuit Working Pressure . . . . . 22
Test No. 3: Traction Pump Flow . . . . . . . . . . . . . . 24
Test No. 4: Charge Pump Flow and
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . 40
General Precautions for Removing and Installing
Hydraulic System Components . . . . . . . . . . . . . 40
Check Hydraulic Lines and Hoses . . . . . . . . . . . . 40
Flush Hydraulic System . . . . . . . . . . . . . . . . . . . . . 41
Hydraulic System Start--up . . . . . . . . . . . . . . . . . . 42
Hydraulic Pump Drive Belt . . . . . . . . . . . . . . . . . . . 43
Traction/Charge Pump . . . . . . . . . . . . . . . . . . . . . . 44
Traction/Charge Pump Service . . . . . . . . . . . . . . . 48
Reel Gear Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Reel Gear Pump Service (Barnes) . . . . . . . . . . . . 50
Reel Gear Pump Service (Casappa) . . . . . . . . 51.1
Wheel Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Wheel Motor Service . . . . . . . . . . . . . . . . . . . . . . . 54
Cutting Reel Motor . . . . . . . . . . . . . . . . . . . . . . . . . 55
Cutting Reel Motor Service (Serial Number
Below 290000000) . . . . . . . . . . . . . . . . . . . . . . . . 56
Cutting Reel Motor Service (Serial Number
Above 290000000) . . . . . . . . . . . . . . . . . . . . . 57.1
Hydraulic Manifold . . . . . . . . . . . . . . . . . . . . . . . . . 58
Hydraulic Manifold Service (Serial Number
Below 290000000) . . . . . . . . . . . . . . . . . . . . . . . . 60
Hydraulic Manifold Service (Serial Number
Above 290000000) . . . . . . . . . . . . . . . . . . . . . 63.1
3 Wheel Drive Selector Valve . . . . . . . . . . . . . . . . 64
3 Wheel Drive Selector Valve Service . . . . . . . . . 66
Front Lift Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Front Lift Cylinder Service . . . . . . . . . . . . . . . . . . . 70
Rear Lift Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Rear Lift Cylinder Service . . . . . . . . . . . . . . . . . . . 74
Control and Lift Relief Valves . . . . . . . . . . . . . . . . 76
Hydraulic Reservoir . . . . . . . . . . . . . . . . . . . . . . . . 79
Oil Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
EATON MEDIUM DUTY PISTON PUMP REPAIR IN-
FORMATION MODEL 70160 VARIABLE DISPLACE-
MENT PISTON PUMP
TM
ROSSTORQMOTOR MG,MF,ME,ANDMJSERIES
SERVICE PROCEDURE
Lift Relief Pressure . . . . . . . . . . . . . . . . . . . . . . . 26
Test No. 5: Charge Pump Relief Pressure . . . . . 28
Test No. 6: Reel Gear Pump Flow . . . . . . . . . . . . 30
Test No. 7: Manifold Relief Valve Pressure . . . . . 32
Test No. 8: Cross--over Relief Pressures . . . . . . 34
Test No. 9: Reel Motor Case Drain . . . . . . . . . . . . 36
Test No. 10: Wheel Motor Case Drain . . . . . . . . . 38
Reelmaster 2000--D
Page 4 -- 1 Rev. A
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Tags | Toro Reelmaster 2000-D |
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| Document Type | Service Manual |
| Language | English |
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| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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