Hydraulic
System
Rev. F
Reelmaster 6500-D/6700-D Hydraulic SystemPage 4 - 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 2.............................
GENERAL INFORMATION 3.....................
Hydraulic Hoses 3.............................
Hydraulic Fitting Installation 3...................
Pushing or Towing Traction Unit 5................
Check Hydraulic Fluid 5........................
HYDRAULIC SCHEMATICS 6....................
RM 6500-D 2WD (Model 03806)
Serial Numbers 210000101 To 210999999 6.....
Serial Numbers 220000101 To 260000499 7.....
Serial Numbers 260000500 To 270999999 8.....
Serial Numbers Above 280000000 9............
RM 6500-D 4WD (Model 03807)
Serial Numbers 210000101 To 210999999 10....
Serial Numbers 220000101 To 260000499 11....
Serial Numbers 260000500 To 270999999 12....
Serial Numbers Above 280000000 12.1.........
RM 6700-D 4WD (Model 03808)
Serial Numbers 210000101 To 210999999 12.2..
Serial Numbers 220000101 To 260000499 12.3..
Serial Numbers 260000500 To 270999999 12.4..
Serial Numbers Above 280000000 13...........
HYDRAULIC FLOW DIAGRAMS 14...............
Traction Circuit 14.............................
Lower Cutting Units 16.........................
Raise Cutting Units 18..........................
Mow and Backlap 20...........................
Right and Left Turns 22.........................
SPECIAL TOOLS 24............................
TROUBLESHOOTING 26........................
TESTING 36...................................
Before Performing Hydraulic Tests 36............
Test No. 1: Traction Circuit Charge Pressure 37....
Test No. 2: Traction Circuit Pressure 38...........
Test No. 3: Cutting Unit Drive Circuit Pressure 39..
Test No. 4: Gear Pump Section P3 Flow and
Relief Valve Pressure 40......................
Test No. 5: Gear Pump Section P1 & P2 Flow 41...
Test No. 6: Reel Drive Motor Cross-over
Relief Pressure 42............................
Test No. 7: Reel Drive Motor Efficiency 44.........
ADJUSTMENTS 46.............................
Adjust Manifold Relief Valve (R1 and R2) 46.......
Adjust Traction Drive for Neutral 47..............
Adjust Cutting Unit Drop Rates (Serial Numbers
Below 280000000) 48.......................
Adjust Cutting Unit Drop Rates (Serial Numbers
Above 280000000) 48.......................
SERVICE AND REPAIRS 49.....................
General Precautions for Removing and
Installing Hydraulic System Components 49.....
Check Hydraulic Lines and Hoses 50.............
Flush Hydraulic System 50......................
Charge Hydraulic System 51....................
Change Hydraulic Fluid 52
......................
Replace Hydraulic Oil Filter 53..................
Piston Pump (Traction Pump) 54.................
Disassembly 55..............................
Assembly 56.................................
Servo Control 58..............................
Disassembly and Assembly 58.................
Neutral Lockout Switch Disassembly 59.........
Neutral Lockout Switch Assembly 59............
Gear Pump 60................................
Disassembly 61..............................
Assembly 62.................................
Wheel Motor 64...............................
4WD Rear Axle Motor 66.......................
Reel Motor (Barnes) 68.........................
Removal and Installation 68...................
Adjusting Valve (Cross-over Relief Valve)
Service 69.................................
Disassembly 69..............................
Assembly 70.................................
Reel Motor (Bosch) 70.........................
Hydraulic Control Manifolds 72..................
Reel Manifold Removal and Installation 72.......
Lift Manifold Removal and Installation 73........
Hydraulic Control Manifold Service 74............
Reel Manifold (Serial No. Below 260000500) 74..
Reel Manifold (Serial No. Above 260000500) 75..
Lift Manifold (Serial No. Below 280000000) 76...
Lift Manifold (RM--6500--D Machines With
Serial No. Above 280000000) 76.1...........
Lift Manifold (RM--6700--D Machines With
Serial No. Above 280000000) 76.2...........
Solenoid Operated, Logic and Relief Cartridge
Valves 77..................................
Rotary Cartridge Valves 77....................
Mow/Backlap Spools 79.......................
Lift Cylinders 80...............................
Lift Cylinder Service 82.........................
Steering Cylinder (2WD) 84.....................
Steering Cylinder (4WD) 86.....................
Power Steering 88.............................
Steering Valve 89..............................
Steering Valve Service 90.......................
Solenoid Valve SV10 and SV11 Service
(RM 6700-D Only) 93.........................
Hydraulic Reservoir 94.........................
Hydraulic Oil Cooler 96.........................
