Multi Pro 5700 - Toro

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Steering Circuit A single section gear pump is coupled to the piston (traction) pump. The gear pump supplies hydraulic flow to the steering control valve and the spray pump drive hydraulic motor. Pump hydraulic flow is delivered to the two circuits through a flow divider with the steering circuit having priority. The gear pump takes its suction from the hydraulic reservoir. Steering circuit pressure is limited by a relief valve located in the gear pump. The steering control valve includes a check valve that allows steering operation when the engine is not running. Steering wheel rotation with the engine off causes oil flow from the steering control gerotor. The check valve opens in this situation to allow oil flow from the steering control to the steering cylinder in a closed loop. Hydraulic flow and pressure to the steering control valve can be monitored at the outlet of the gear pump. With the steering wheel in the neutral position and the engine running, gear pump flow enters the steering control valve (port P) and goes through the steering control spool valve, by–passing the rotary meter (V1) and steering cylinder. Flow leaves the control valve (port T), to the oil cooler, and returns to the hydraulic oil reservoir. Left Turn When a left turn is made with the engine running, the turning of the steering wheel positions the spool valve so that flow goes through the top of the spool. Flow entering the steering control valve from the gear pump goes through the spool and is routed through the rotary meter (V1) and out the L port. Pressure extends the steering cylinder piston for a left turn. The rotary meter ensures that the oil flow to the cylinder is proportional to the amount of the turning on the steering wheel. Fluid leaving the cylinder flows back through the spool valve, then to the oil cooler and returns to the reservoir. The steering control valve returns to the neutral position when turning is completed. Right Turn When a right turn is made with the engine running, the turning of the steering wheel positions the spool valve so that flow goes through the bottom of the spool. Flow entering the steering control valve from the gear pump goes through the spool and is routed through rotary meter (V1) but goes out port R. Pressure contracts the steering cylinder piston for a right turn. The rotary meter ensures that the oil flow to the cylinder is proportional to the amount of the turning on the steering wheel. Fluid leaving the cylinder flows back through the spool valve, then to the oil cooler and returns to the reservoir. The steering control valve returns to the neutral position when turning is completed. STEERING CYLINDER STEERING CYLINDER STEERING CYLINDER NO PISTON MOVEMENT PISTON MOVEMENT PISTON MOVEMENT R L R L R L T P STEERING CONTROL T P STEERING CONTROL T P STEERING CONTROL NEUTRAL POSITION LEFT TURN RIGHT TURN Figure 9 Hydraulic System Page 4 – 10 Multi Pro 5700–D
Spray Pump Drive Circuit A single section gear pump is coupled directly to the piston (traction) pump. The gear pump supplies hydraulic flow to the steering control valve and the spray pump drive hydraulic motor. Gear pump hydraulic flow is delivered to the two circuits through a flow divider with the steering circuit having priority. The gear pump takes its suction from the hydraulic reservoir. Spray pump drive circuit pressure is limited by an adjustable relief valve located on the outside of the piston (traction) pump. Spray pump drive circuit hydraulic flow and pressure can be monitored at the outlet of the gear pump. Hydraulic flow control for the spray pump drive hydraulic motor is completed by the Pulse Width Modulated (PWM) Valve. The PWM Valve consists of an electric solenoid valve that allows the operator to adjust hydraulic flow to the spray pump motor. The spray pump on/off and application rate (increase/decrease) switches are used to adjust electrical current to the PWM Valve solenoid. With the engine running and the spray pump switch in the OFF position, the solenoid valve in the PWM Valve is not energized. All gear pump flow to the PWM Valve is directed out the EX port of the PWM Valve, to the oil cooler, and returns to the hydraulic oil reservoir. The spray pump hydraulic motor receives no hydraulic flow so the spray system pump is not rotated and no spray system flow is available. With the engine running and the spray pump switch in the ON position, the solenoid valve in the PWM Valve is energized. Based on available current (mA) from the spray pump application rate (increase/decrease) switch, the solenoid spool valve in the PWM Valve directs some gear pump flow out the CF port to the spray pump hydraulic motor. This hydraulic flow causes the motor to rotate the spray system pump for spray system operation. Gear pump hydraulic flow in excess of PWM solenoid spool valve setting is directed out the EX port of the PWM Valve, to the oil cooler, and returns to the hydraulic oil reservoir. The spray pump application rate (increase/decrease) switch allows the operator to adjust electrical current to the PWM Valve solenoid. Higher current (rate increase) to the PWM Valve solenoid increases hydraulic flow to the spray pump motor and results in a higher spray pump speed with more spray system output/pressure. Lower current (rate decrease) to the PWM Valve solenoid decreases hydraulic flow to the spray pump motor and results in a lower spray pump speed with less spray system output/pressure. NOTE: Correct operation of the PWM Valve depends on precision manufacturer’s assembly and adjustment. No disassembly or adjustment of the PWM Valve is recommended. Hydraulic System Multi Pro 5700–D Page 4 – 11 Hydraulic System
Page 1 and 2: PART NO. 04130SL (Rev. D) Service M
Page 3 and 4: Table Of Contents Chapter 1 - Safet
Page 5 and 6: Table Of Contents (Continued) Chapt
Page 7 and 8: Chapter 1 Safety Safety Table of Co
Page 9 and 10: Maintenance and Service 1. Before s
Page 11 and 12: Chapter 2 Product Records and Maint
Page 13 and 14: Torque Specifications Recommended f
Page 15 and 16: Standard Torque for Dry, Zinc Plate
Page 17 and 18: Maintenance Maintenance procedures
Page 19 and 20: Chapter 3 Kubota Diesel Engine Tabl
Page 21 and 22: Kubota Diesel Engine This page is i
Page 23 and 24: DANGER Because diesel fuel is highl
Page 25 and 26: Removal (Fig. 4) NOTE: For air clea
Page 27 and 28: Installation (Fig. 6 or 7) 1. Insta
Page 29 and 30: 6. Disconnect throttle cable from e
Page 31 and 32: CAUTION Exhaust system components m
Page 33 and 34: 15.Check engine oil level and adjus
Page 35 and 36: Chapter 4 Hydraulic System Table of
Page 37 and 38: Specifications Item Piston (Tractio
Page 39 and 40: SAE Straight Thread O -Ring Port -
Page 41 and 42: This page is intentionally blank. H
Page 43: Hydraulic Flow Circuits Traction Ci
Page 47 and 48: O -Ring Kit Toro Part Number: 16 -3
Page 49 and 50: Machine travels too far before stop
Page 51 and 52: Traction Circuit Charge Pressure Te
Page 53 and 54: Gear Pump Flow Test Output from the
Page 55 and 56: Steering Control Valve and Steering
Page 57 and 58: Wheel Motor Efficiency: Case Drain
Page 59 and 60: Adjustments Adjust Traction Pedal f
Page 61 and 62: Service and Repairs General Precaut
Page 63 and 64: Charge Hydraulic System NOTE: When
Page 65 and 66: Removal (Fig. 26) 1. Park machine o
Page 67 and 68: Hydraulic System This page is inten
Page 69 and 70: 3. Operate all hydraulic controls t
Page 71 and 72: Manual Servo Control Assembly 44 to
Page 75 and 76: Hydraulic System This page is inten
Page 79 and 80: Relief Valve Removal 1. Park machin
Page 83 and 84: Removal (Fig. 45) 1. Park the machi
Page 85 and 86: CAUTION The centering springs are u
Page 89 and 90: Disassembly (Fig. 52) 1. Remove oil
Page 95 and 96:
Chapter 5 Electrical System Table o
Page 97 and 98:
Special Tools Order these special t
Page 99 and 100:
Starting Problems (continued) Probl
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Component Testing For accurate resi
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Headlight Switch The headlight swit
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Brake Pedal Switch The brake pedal
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Indicator Lights High Temperature W
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Accessory Solenoid The accessory so
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Spray Pump, Agitation and Boom Cont
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Pulse Width Modulated (PWM) Valve S
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Relays The Multi Pro 5700-D uses th
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Fuel Stop Solenoid The fuel stop so
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Fuel Pump The fuel pump is attached
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Service and Repairs NOTE: See the K
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Cruise Control Coil Removal (Fig. 4
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Battery Service The battery is the
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H. Using the table below, determine
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Chapter 6 Spray System Table of Con
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General Information Precautions Con
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Spray System Operation The Multi Pr
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Erratic spray operation from booms.
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Pressure Dampener The pressure damp
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5. Remove lock nuts, flat washers,
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Disassembly (Fig. 9) IMPORTANT: Mak
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This page is intentionally blank. S
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IMPORTANT: Make sure to remove and
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IMPORTANT: Make sure to remove and
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4. If boom valve motor assembly is
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IMPORTANT: Boom valve motors may ha
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IMPORTANT: The agitation valve moto
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4. Remove rear housing cover from v
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Boom and Agitation Valve Motor Serv
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Disassembly (Fig. 30) IMPORTANT: Ma
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NOTE: If suction tube in tank devel
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Disassembly (Fig. 33) IMPORTANT: Ma
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Disassembly (Fig. 37.1) IMPORTANT:
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Turret Body Service Disassembly (Fi
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Disassembly (Fig. 38) 1. Park machi
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Assembly (Fig. 41) 1. If pivot brac
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Adjustment 1. Loosen end nut that s
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Disassembly (Fig. 47) 1. Remove fou
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Removal (Fig. 48) 1. Park machine o
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Actuator Oil Level Under normal con
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Chapter 7 Chassis Table of Contents
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Service and Repairs Tie Rod Ends Re
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Removal (Fig. 3) 1. Park machine on
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Disassembly (Fig. 4) 1. Park machin
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Disassembly (Fig. 5) 1. Park machin
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3. Chock front wheels and jack up r
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Brake Cables Removal 1. Remove brak
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Removal (Fig. 13) 1. Park machine o
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NOTE: The planetary wheel drive ass
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Table of Contents GENERAL INFORMATI
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Special Tools Diagnostic Display Th
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Sonic Boom System This page is inte
Page 205 and 206:
Sprayer Operation on Level Turf Dur
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Downward Slope in Turf Encountered
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Rise in Turf Encountered During spr
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Boom Level Changed by Operator Duri
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Manual Boom Operation During spraye
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Diagnostic Display The Sonic Boom S
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Verify Diagnostic Display Output Fu
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Problem One of the boom actuators w
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Relays The Sonic Boom System uses s
Page 223 and 224:
Sonic Sensor Two (2) identical soni
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Chapter 8 Electrical Diagrams Table
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R/BK IGNITION SWITCH OFF RUN START
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All relays and solenoids are shown
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PINK PINK GRAY GRAY GRAY GRAY VIOLE
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PINK PINK ORANGE RED RED/BLACK RED
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RED ORANGE GREEN/RED GREEN/RED PINK
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RED RED BROWN BROWN BROWN PINK PINK
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Rev. D Page 8 - 19 Multi Pro 5700--
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WHITE RED GREEN YELLOW GREEN YELLOW
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Rev. D Page 8 - 23 Multi Pro 5700--
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Multi Pro 5700 - Toro

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