Michco sc8000 Service Manual
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Michco sc8000 Service Manual

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  • Page 1 We do not create the contents of the information contained in this docu- ment. Should you have detailed questions pertaining to the information contained in this document, you may contact Michco, or the manufac- turer which provided the original information in this electronic deliver- able.

  • Page 2: Service Manual

    • 56108124 SC8000 1300 LPG • 56108110 SC8000 48 LPG • 56108120 SC8000 62 D • 56108125 SC8000 1300 D • 56108111 SC8000 48 LPG ECOFLEX • 56108121 SC8000 62 D ECOFLEX • 56108126 SC8000 1600 LPG • 56108112 SC8000 48 D •...

  • Page 3: Table Of Contents

    Maintenance Every 150 Hours Maintenance Every 400 Hours Maintenance Every 800 to 1000 Hours Maintenance Every 2000 Hours Lubrication Points PM Check List - SC8000 General Machine Overview Major Machine Components Control Panel Switches Control Panel Indicators Liquid Crystal Display (LCD)
  • Page 4 Service Manual – SC8000 Contents Component Locations Control Board (Driver Box) Connectors J1 Main Control Board Connectors J2 Main Control Board Connectors J3 Main Control Board Connectors Control Board (Driver Box) Programming Options Foot Pedal Neutral Position and Deadband Adjustment...
  • Page 5 Service Manual – SC8000 Contents Engine Stops Running - Run InhibitActive Diesel Engine Will Not Run at High Speed or Turbo Speed Troubleshooting the Kubota Engine Speed Governing System Specifications Engine Specifications Connector Callout – Relay PCB Special Tools Engine System, LPG...
  • Page 6 Service Manual – SC8000 Contents Recovery System Functional Description System Overview Recovery System Wiring Diagram Electrical Circuit Description Recovery System Hydraulic Diagram Component Locations Recovery Tank Daily Maintenance Troubleshooting Removal and Installation Recovery Tank Specifications Special Tools Scrub System, Cylindrical...
  • Page 7 Service Manual – SC8000 Contents Extended Scrub System Right Side Scrub Brush Wash Hose DustGuard Spray Nozzles ™ Solution System Wiring Diagram Circuit Descriptions Component Locations Maintenance and Adjustments To Clean the Solution Filter Screen To Clean the Extended Scrub System Strainer To Clean the Solution Delivery Trough To Clean the DustGuard™...
  • Page 8 Service Manual – SC8000 Contents Dual Sweep Maintenance and Adjustments To Adjust the Side Broom Lift Actuator Motor Troubleshooting General Troubleshooting Main Scrub and Side Sweep/Scrub On Specifications Wheel System, Non-traction Functional Description Maintenance and Adjustments Brake Tension Adjustment Troubleshooting...

  • Page 9: General Information

    Service Manual Purpose and Application This Service Manual a technical resource designed to aid service personnel in maintaining and repairing the SC8000 Sweeper/Scrubbers to ensure optimum performance and long service life. Please read it thoroughly before servicing your machine. Revision History...

  • Page 10: Engine Manufacturers' Technical Manuals

    Service Manual – SC8000 General Information – OM56091080 (Slovakian, Czech, Polish, Hungarian) – OM56091081 (English, Turkish, Bulgarian, Romanian) These manuals can be found on the following Nilfisk-Advance’s electronic supported databases: • Nilfisk-Advance Dealer Customer Zone • Advance website: www.advance-us.com • Nilfisk website: www.nilfisk.com...
  • Page 11 Kit, p/n 56504450, and a Diagnostic Communication Cable and software, p/n 56305647 (Used on other model GM Engines as well as Kubota LPG in the SC8000. Kubota engine requires updated GCP display software. Engine service kit, p/n 56109084 LPG test kit, p/n 56504450...

  • Page 12: Conventions

    Service Manual – SC8000 General Information Conventions All references to right, left, front and rear in this manual are as seen from the Operator’s seat position. Parts and Service Repairs should be performed by an Authorized Nilfisk-Advance Service Center that employs factory-trained service personnel and maintains an inventory of Nilfisk-Advance original replacement parts and accessories.

  • Page 13: Cautions And Warning Symbols

    Service Manual – SC8000 General Information Cautions and Warning Symbols Nilfisk-Advance uses the symbols below to signal potentially dangerous conditions. Read this information carefully and take the necessary steps to protect personnel and property. Danger! Is used to warn of immediate hazards that will cause severe personal injury or death.
  • Page 14 Service Manual – SC8000 General Information Caution! Do not pressure-wash the operator control panel, electrical components or the engine compartment area. Caution! Be sure to follow these safety precautions to avoid situations that could cause personal injury, damage to property or equipment damage.

  • Page 15: Jacking The Machine

    Service Manual – SC8000 General Information Jacking the Machine Warning! Never work under a machine without safety stands or blocks to support the machine. When jacking the machine, do so at the designated Tie Down/Jacking Locations shown below. Transporting the Machine...

  • Page 16: Towing The Machine

    Service Manual – SC8000 General Information Towing the Machine Caution! The machine’s hydrostatic drive propulsion system pump is manufactured with a tow valve. This valve allows the hydraulic traction drive motor to “freewheel” when the machine is being towed/pushed short distances without the use of the engine.

  • Page 17: Technical Specifications

    Service Manual – SC8000 General Information Technical Specifications General Machine Dimensions and Capacities Length 100 in [254 cm] 58 in [147 cm] Height Height (with overhead guard) 84 in [213 cm] Width/frame (roller to roller) 56 in [142 cm] Width (with rear squeegee) 57 in [144.7 cm]...

  • Page 18: Overall Dimensions

    Service Manual – SC8000 General Information Overall Dimensions...

  • Page 19: Engine And Machine Performance

    Service Manual – SC8000 General Information Engine and Machine Performance Idle - 1200 RPM 4-cylinder 1.6L WG1605 Kubota Normal Run - 2200 RPM High Output Turbo - 2400 RPM Engine speeds Idle - 1300 RPM 4-cylinder 1505 Kubota Diesel Normal Run - 2200 RPM...

  • Page 20: Recommended Service Materials

    Service Manual – SC8000 General Information Recommended Service Materials • Engine Oil (refer to your engine manual) • Hydraulic oil (10W-30) • Manufacturer-recommended coolant (antifreeze) 50/50 mix • Lithium-base grease • Loctite (or equivalent) thread sealant in the appropriate grades ®...

  • Page 21: Maintenance Every 15 To 20 Hours

    Service Manual – SC8000 General Information Maintenance Every 15 to 20 Hours Maintenance Item Procedure Check the electrolyte level in the battery. Battery Check the battery cables and connections. Solution tank filter Inspect and clean the debris filter on the solution filter system.

  • Page 22: Maintenance Every 400 Hours

    Service Manual – SC8000 General Information Maintenance Every 400 Hours Maintenance Item Procedure Inspect the complete air intake system for correct routing, kinks, Air intake housing and hoses restrictions, sound tight connections, holes and cracks in hoses. Hydraulic hoses Inspect for leaks, wear, cracking and kinks.

  • Page 23: Lubrication Points

    Service Manual – SC8000 General Information Lubrication Points Brake Pedal Detergent (parking brake) Cover Latch Linkage (oil) (oil) Steering Rack (grease) Squeegee End Tool Wheel (oil) Fuel Tank Cover Latch (oil) Angle Squeegee Adjustment End Tool Knob Threads Wheel (oil)

  • Page 24: Pm Check List - Sc8000

    Defect Codes PM Check List - SC8000 A Needs Adjustment Customer________________________________________________________ B Binding Address__________________________________________________________ C Contaminated or dirty Ciry_________________________ St________________ Zip______________ D Damaged, bent or torn L Leaks M Missing W Worn out Operational Inspection Items Defect Codes Does (Circle)
  • Page 25 Visual Inspection Items Comments Defect Codes Does Work Side sweep broom(s) bristles min wear 3 inches Side broom motor(s) Scrub brush motor(s) Right scrub brush Main scrub brushes, check for wear and Min wear .875 inches rotate (1.75” length) Scrub deck housing and door skirts Solution system pumps and solenoid valves as many as four pumps Solution tank, delivery hoses and filter...
  • Page 26 Service Manual – SC8000 General Information Visual Inspection Items Comments Defect Codes Does Work Scrub housing debris hopper (tray) clean Scrub housing recovery hose and pick-up back flush/clean screen Dust guard spray nozzles and strainers clean Defect Codes needs adjustment...

  • Page 27: General Machine Overview

    Service Manual – SC8000 General Information General Machine Overview Major Machine Components Recovery Engine Solution Tank Cover Cover Tank Fill Cover Operator Engine Air Seat Filter Service Indicator Operator Seat Adjustment Lever Coolant Steering Overflow Wheel Tank Recovery Tank Tilt-out...
  • Page 28 Service Manual – SC8000 General Information Brake Pedal/ Parking Brake Circuit Control Breaker Panel Panel Steering Wheel Tilt Adjust Lever Drive Pedal Direction/ Speed Engine Oil Dipstick Detergent Cartridge Oil Cooler Compartment Tilt-out Latch Hydraulic OIl Reservoir Filler Cap Engine...

  • Page 29: Control Panel Switches

    Service Manual – SC8000 General Information Control Panel Switches • – sounds the Horn Switch Extended Detergent Horn horn when pressed. Scrub Switch Switch Switch • Extended Scrub Switch – enables the optional extended scrub (recycle) Solution function. Flow Increase Switch •...
  • Page 30 Service Manual – SC8000 General Information • – (optional) switch on the Left Right Turn Signal corresponding turn signal. Right Turn Left Turn Signal Signal • (liquid crystal display) – displays the various machine status icons and informational displays. •...

  • Page 31: Control Panel Indicators

    Service Manual – SC8000 General Information • – selects the engine speed as follows: Engine Speed Switch – Pressing the switch with the engine idling (1200 RPM – LPG, 1300 RPM – diesel) will increase the engine speed to the normal transport/scrub speed (2200 RPM).
  • Page 32 Service Manual – SC8000 General Information • – indicate that the Left Right Turn Indicators corresponding turn signal is flashing. Left Turn Right Turn Indicator Indicator • – lights in conjunction with Warning Indicator the LCD to alert the Operator of a warning or fault condition.

  • Page 33: Liquid Crystal Display (Lcd)

    Service Manual – SC8000 General Information Liquid Crystal Display (LCD) General Displays The LCD shows the total sweep/scrub time on the hour Hour Fuel Dilution Meter Gauge Ratio or % meter, the fuel gauge, the current scrub pressure and the current solution flow rate.
  • Page 34 Service Manual – SC8000 General Information Icon Condition Display Icon The key switch is in the run position and the glow plugs are activated (heating up) Diesel Glow Plug for their timed 10 seconds. The engine Start can be cranked to start when the yellow attention light and display icon go out.
  • Page 35 Service Manual – SC8000 General Information Icon Condition Display Icon The Kubota 1.6L engines ECM (electronic control module) has activated Engine Engine Service an engine fault code. See the System, LPG / Engine Diagnostics section for more detailed diagnostic help.

  • Page 36: Chassis System

    Service Manual – SC8000 Chassis System Major Chassis Components Front Hood Rear Cover Assembly Floor Weldment Cover Support Assembly Front Floor Tank Chassis Heavy Weldment Bumper Assembly...
  • Page 37 Service Manual – SC8000 Chassis System Rear Cover Rear Grille Latch Handle Latch Cover Support Weldment Heavy Bumper Weldment...

  • Page 38: Control System

    Service Manual – SC8000 Control System Functional Description Overview The Control System includes the Driver Box (main controller) and the Dashboard Panel. The Dashboard Panel communicates with the Driver Box via a CAN Bus. The Driver Box controls the machine electrical and hydraulic systems by actuating the appropriate pumps and solenoid valves to perform the required scrubbing, sweeping and drive functions.

  • Page 39: Component Locations

    Service Manual – SC8000 Control System Component Locations Dashboard Panel Driver Main Control Board Connector J3 Main Control Board Connector J2 Main Control Board Connector J1 Relay PCB Start/Run Inhibit K1 Power Relay...

  • Page 40: Control Board (Driver Box) Connectors

    Service Manual – SC8000 Control System Control Board (Driver Box) Connectors J1 Main Control Board Connectors Pin# Wire# Color Type Goes To J1-1 18-1 Input Engine control module output J1-2 20-1 BLK/YEL -CANbus User interface panel (membrane switches) J1-3 20-1...

  • Page 41: J2 Main Control Board Connectors

    Service Manual – SC8000 Control System J2 Main Control Board Connectors Pin# Wire# Color Type Goes to J2-1 18-1 BLU/GRN - Output K1 power relay coil J2-2 18-1 BLK/WHT - Output S8 side sweep scrub solenoid coil J2-3 18-1 GRN/VIO...

  • Page 42: J3 Main Control Board Connectors

    Service Manual – SC8000 Control System J3 Main Control Board Connectors Pin# Wire# Color Type Goes to J3-1 16-2 GRA/RED + Input CB1 Circuit Breaker, 20A J3-2 16-1 GRN/BLU - Output M4 solution pump J3-3 Open J3-4 16-1 BLU/BRN Output...

  • Page 43: Control Board (Driver Box) Programming Options

    Service Manual – SC8000 Control System Control Board (Driver Box) Programming Options Foot Pedal Neutral Position and Deadband Adjustment Factory Default: 3% Range: 2% - 15% Whenever you change or repair the drive pedal linkage components or the hydrostatic unit, or if you replace...

  • Page 44: Configuration Display Menu

    Service Manual – SC8000 Control System • Press the red Scrub Off switch to return to the previous menu without changing the percentage value. Turn the Key Switch to the off position. The new settings will be saved and remain in effect until they are changed again.
  • Page 45 Service Manual – SC8000 Control System Press and hold the Emergency Flashers switch, then turn the key switch CONFIGURATION DISPLAY on. Configuration display only – no changes to configuration allowed. Fault Codes Will be displayed if there are no No Stored Codes stored fault codes.

  • Page 46: User Options Menu

    Service Manual – SC8000 Control System CONFIGURATION DISPLAY (continued) Signal Lights Installed / Not Installed Display Screen US Display / Global Display Operator Presence On / Off Pressing a control panel switch will light the corresponding LED User Interface Test indicator to confirm that the switch and indicator are working correctly.
  • Page 47 Service Manual – SC8000 Control System Press and hold the Scrub Off and Scrub On switches, USER OPTIONS MENU then turn the key switch on. Scrub System Scrub Mode Start Up Selects the scrub mode on startup. Scrub Mode (1-3)
  • Page 48 Service Manual – SC8000 Control System USER OPTIONS MENU (continued) Recovery System Squeegee Up Delay Selects the squeegee up delay time – 5 - 30 seconds 5 to 30 seconds in 1-second increments. Vacuum Off Delay Selects the vacuum off delay time –...
  • Page 49 Service Manual – SC8000 Control System USER OPTIONS MENU (continued) Appears only when the Side Sweep Side Sweep System system is installed. Dust Guard Start Up Last State Appears only when the Extended Scrub Extended Scrub System system is installed.

  • Page 50: Configuration Menu

    Service Manual – SC8000 Control System Configuration Menu Press and hold the Emergency Flashers and Headlight switches. Turn the ignition Key Switch to the run (on) position. Continue to hold the Emergency Flashers and Headlight switches until all the display panel lights turn off (approximately three seconds), then release the switches.
  • Page 51 Service Manual – SC8000 Control System Press and hold the Emergency Flashers and Headlight switches, then CONFIGURATION MENU turn the key switch on. Engine Type Undefined Diesel Propane Detergent System Installed? Not Installed Installed Display Format Ratio Percentage EcoFlex System...
  • Page 52 Service Manual – SC8000 Control System CONFIGURATION MENU (continued) Extended Scrub System Not Installed Installed Back-up Alarm Not Installed Installed Signal Lights Not Installed Installed Display Screen US Display Global Display Operator Presence Restore Defaults Press the Scrub On switch to restore the Are You Sure? default settings.

  • Page 53: Operator Presence Control (Opc)

    Service Manual – SC8000 Control System Operator Presence Control (OPC) The Operator Presence Control (OPC) feature that works in conjunction with the seat switch and parking brake. The OPC can be enabled or disabled in the Configuration Menu. OPC On When the OPC is enabled, the machine functions as follows: •...

  • Page 54: Troubleshooting

    Service Manual – SC8000 Control System – If the Recovery system is On, it transitions to the Wand mode. – Pressing the Scrub Off switch turns the Scrub system off. – Pressing the Scrub On switch has no effect. – Pressing the Wand/Vacuum switch with the Scrub system off transitions the Recovery system between Off and the Wand modes.
  • Page 55 Service Manual – SC8000 Control System Code# Fault Description Correction Check for 12V (+) from controller wire J2-29 (GRA/ORN) to battery ground (-) with the engine speed switch 51 active. Should read 12V. • If 0V, troubleshoot the throttle wire. If still 0V, substitute a...
  • Page 56 Service Manual – SC8000 Control System Code# Fault Description Correction • Check K4 relay coil wiring for problems (+ ORN/GRN and - WHT/ORN). Glow plug relay K4 coil over 14 NC current. • Check coil resistance. If less than 36 ohms, replace. Also see diesel glow plug starting circuit electrical ladder detail.
  • Page 57 Service Manual – SC8000 Control System Code# Fault Description Correction Control board has sensed open circuit fault for CB3 power 15A Circuit breaker CB3 over 27 C for side broom actuator motor (M7). Check for Violet wire current shorted to ground.

  • Page 58: Systems Disabled By Faults

    Service Manual – SC8000 Control System Systems Disabled by Faults The following table lists the systems that are disabled for each displayed fault code. Note: “X” indicates that the corresponding machine system is disabled (turned off). Fault Description Solution pump(s) M4 and M6 over...
  • Page 59 Service Manual – SC8000 Control System Fault Description 20A circuit breaker CB1 over current 20A circuit breaker CB2 over current 15A circuit breaker CB3 over current 20A circuit breaker CB4 over current 10A circuit breaker CB5 over current Side sweep lift M7 actuator over...

  • Page 60: Electrical System

    Service Manual – SC8000 Electrical System Functional Description Overview The electrical system consists of the fuse, relay and circuit breakers not covered in the Control System section or the other manual sections. Power Supplies K1 POWER RELAY ON POWER RELAY...

  • Page 61: Component Locations

    Service Manual – SC8000 Electrical System Component Locations K1 Power Relay is mounted inside K1 Power Relay the control board assembly. Note that a second identical power relay (K4) is installed on diesel models as the glow plug power relay.

  • Page 62: 100-Amp Fuse F1

    Service Manual – SC8000 Electrical System 100-amp Fuse F1 is tied up with the engine harness connectors 100-amp Fuse F1 and can be accessed by tipping out the recovery tank. 100-amp Fuse F1 Troubleshooting Problem Cause Correction No power to the The 100-amp fuse Replace the fuse.
  • Page 63 Service Manual – SC8000 Electrical System Problem Cause Correction Fault code Left stop lamp over current • Check left stop lamp wiring for problems (+ ORN/ displayed BRN and - BLK). • Check lamps for short (see the I/O table for circuit spec).

  • Page 64: Specifications

    Service Manual – SC8000 Electrical System Specifications Component Specifications Component Specifications Current – 0.29 Amps @ 12V K1 and K4 Relays Nominal Coil Resistance – 46 ± 5 ohms Connector Callout – Relay PCB Pin# Color Type Voltage Pin Description and Function...

  • Page 65: Input/Output Table

    Service Manual – SC8000 Electrical System Input/Output Table Nominal Voltage at Ref, Load or Supply Desig. Pin Assignment Signal Connector Comments Characteristics (when activated) 0V (for Digital Engine Control Switch to ground, ground = run, float = not running J1-1...
  • Page 66 Service Manual – SC8000 Electrical System Nominal Voltage at Ref, Load or Supply Desig. Pin Assignment Signal Connector Comments Characteristics (when activated) Digital Pushbutton switch - ground or open - closed to J1-16 Input Horn Switch Switch to ground voltage...
  • Page 67 Service Manual – SC8000 Electrical System Nominal Voltage at Ref, Load or Supply Desig. Pin Assignment Signal Connector Comments Characteristics (when activated) Digital J1-32 Input Hydraulic Filter Switch Switch to ground Ground or open, closed when filter plugged voltage Extend Scrub Level...
  • Page 68 Service Manual – SC8000 Electrical System Nominal Voltage at Ref, Load or Supply Desig. Pin Assignment Signal Connector Comments Characteristics (when activated) Low side Relay coil - 0.29A J2-13 Output Glow Plug Relay 46 ± 5 ohms driver @12V J2-14...
  • Page 69 Service Manual – SC8000 Electrical System Nominal Voltage at Ref, Load or Supply Desig. Pin Assignment Signal Connector Comments Characteristics (when activated) Incandescent High side J2-32 Output Right Front Turn Lamp lamp - 0.33A 0.4A @14.5V (4W turn lamp) driver...
  • Page 70 Service Manual – SC8000 Electrical System Nominal Voltage at Ref, Load or Supply Desig. Pin Assignment Signal Connector Comments Characteristics (when activated) J3-10 Ground J3-11 Ground Ground Ground Ground J3-12 Ground Ground Ground Ground J3-13 Ground Ground Ground Ground Power...

  • Page 71: Shop Measurements - Driver Box

    Service Manual – SC8000 Electrical System Shop Measurements - Driver Box Shop measurement values can help you recognize “normal” values. The values in this table were measured on one propane engine model with the black voltmeter lead connected to battery negative and everything connected. The model had a right side scrub option with no side sweep.
  • Page 72 Service Manual – SC8000 Electrical System Nominal Voltage at “Real World” Wire Load or Supply Pin Assignment Signal Connector Shop Comments Color Characteristics (when Measurements activated) J1-13 Not Used J1-14 Not Used J1-15 Not Used 12v open Digital This circuit is for an optional foot operated...
  • Page 73 Service Manual – SC8000 Electrical System Nominal Voltage at “Real World” Wire Load or Supply Pin Assignment Signal Connector Shop Comments Color Characteristics (when Measurements activated) Engine Control Engine Coolant Analog 1.59v at 132 Deg. J1-30 VIO/BLU 0.34 - 2.93...
  • Page 74 Service Manual – SC8000 Electrical System Nominal Voltage at “Real World” Wire Load or Supply Pin Assignment Signal Connector Shop Comments Color Characteristics (when Measurements activated) 14.6v Sol. off Scrub Brush Low side Hydraulic coil - 1.5A J2-7 ORN/BLU 8 ohms @ 20°C...
  • Page 75 Service Manual – SC8000 Electrical System Nominal Voltage at “Real World” Wire Load or Supply Pin Assignment Signal Connector Shop Comments Color Characteristics (when Measurements activated) Low side Scrub Pressure Hydraulic coil - 2.1A 9.6v all 3 scrub Voltage moves slightly when changing...
  • Page 76 Service Manual – SC8000 Electrical System Nominal Voltage at “Real World” Wire Load or Supply Pin Assignment Signal Connector Shop Comments Color Characteristics (when Measurements activated) Low side GRA/ Extended Scrub Pump motor 11.5 J2-35 Not Measured 5KHz variable duty cycle...
  • Page 77 Service Manual – SC8000 Electrical System Nominal Voltage at “Real World” Wire Load or Supply Pin Assignment Signal Connector Shop Comments Color Characteristics (when Measurements activated) Circuit Breaker2 J3-14 Power 12 - 15 VDC System voltage 12.7.v key on Power from circuit breaker 2 (20A)

  • Page 78: Shop Measurements - Relay Pcb

    Service Manual – SC8000 Electrical System Shop Measurements - Relay PCB Shop measurement values can help you recognize “normal” values. The values in the table were measured on one propane engine model with the black voltmeter lead connected to battery negative and everything connected.

  • Page 79: Wiring Diagram - 56108185 Rev. A Sheet 1 Kubota Lpg Engine

    3-4-13 CHEMICAL PUMP REAR VIEW SPECIFIED NILFISK-ADVANCE, INC. J1-5 1. ALL DIMENSIONS IN INCHES. CHECKED SC8000 W/KUBOTA LP ENGINE SYSTEM 2. DO NOT SCALE DRAWING. SWITCH, SEAT 3-4-13 PLYMOUTH, MINNESOTA 55447-3408 3. ALL DIMENSIONS APPLY AFTER PROJ ENG PLATING AND HEAT TREATING, BUT BEFORE PAINTING.

  • Page 80: Wiring Diagram - 56108185 Rev. A Sheet 2 Kubota Diesel Engine

    CHECKED 2. DO NOT SCALE DRAWING. 3-4-13 PLYMOUTH, MINNESOTA 55447-3408 3. ALL DIMENSIONS APPLY AFTER PROJ ENG SWITCH, SEAT SC8000 W/KUBOTA DIESEL ENGINE SYSTEM PLATING AND HEAT TREATING, BUT BEFORE PAINTING. APPROVED TITLE 4. REMOVE ALL BURRS AND SHARP EDGES.

  • Page 81: Wiring Diagram Kubota 1.6L Lpg Engine 56107659 Rev. A

    Service Manual – SC8000 Electrical System Wiring Diagram Kubota 1.6L LPG Engine 56107659 REV. A...

  • Page 82: Wiring Harness Schematic, Machine - 56108186 Rev A Sheet 1 Of 2

    Service Manual – SC8000 Electrical System Wiring Harness Schematic, Machine - 56108186 REV A Sheet 1 of 2 ORN/GRN 18-4 BLK 16-5 GRA 18-1 GRN/ORN 18-1 BLU/GRN 18-1 BLU/RED 16-1 BLK 16-4 HORN BLK/YEL 20-1 VIO/WHT 18-1 BLK/WHT 18-1 WHT/YEL 18-1...

  • Page 83: Wiring Harness Schematic, Engine Interface And Kubota Diesel - 56108186 Rev A Sheet 2 Of 2

    Service Manual – SC8000 Electrical System Wiring Harness Schematic, Engine Interface and Kubota Diesel - 56108186 REV A Sheet 2 of 2 RED 1-1 KUBOTA ENGINE SYSTEM RED 6-2 REFERENCE: 56107659 DIAGRAM-WIRING KUBOTA LP STARTER X10.1 ENGINE GROUND GASOLINE SENSOR X78.

  • Page 84: Engine System, Diesel

    Functional Description Overview The diesel SC8000 machines use a Kubota V1505-B-1 four-cylinder diesel engine to power the two hydraulic pumps that run the machine drive wheel, scrub/sweep systems, vacuum fan motor, the scrub/sweep and squeegee lift actuators and the steering system. A Woodward APECS 3000 Governor controls the fuel quantity to maintain the selected RPM or shut the engine off.

  • Page 85: Circuit Description

    Service Manual – SC8000 Engine System, Diesel Circuit Description • For the engine to start: – The must be set to provide positive voltage to the , and to the Key Switch S1 Glow Plug Relay K4 Relay to actuate the engine contacts.

  • Page 86: Component Locations

    Service Manual – SC8000 Engine System, Diesel Component Locations Oil Pressure Sensor Engine Ground Connection (above oil filter) Coolant Temperature Sensor (above alternator) X1 and X2 Electrical Connectors Governor Engine Speed Woodward Governor and Magnetic Pickup Throttle Actuator...

  • Page 87: Maintenance And Adjustments

    Service Manual – SC8000 Engine System, Diesel Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Engine Oil Check the engine oil level when the machine is parked on a level surface and the engine is cool.
  • Page 88 Service Manual – SC8000 Engine System, Diesel Replacing Engine Coolant One possible cause of engine overheating is trapped air in the cooling system. It’s recommended that you use a Cooling System Tool when changing the engine coolant. The Cooling System Tool pulls a vacuum on the cooling system prior to filling to prevent air from being trapped in the cooling system.

  • Page 89: Engine Air Filter Maintenance

    Service Manual – SC8000 Engine System, Diesel Engine Air Filter Maintenance Check the before each use of the machine. Do not service the air filter unless Engine Air Filter Service Indicator the red flag is visible in the service indicator.

  • Page 90: Loss Of Oil Pressure Protection

    Service Manual – SC8000 Engine System, Diesel • Check for correct operation of the belt-driven engine cooling fan (slippage). • Check to see that the engine thermostat opens. • Check for correct water pump operation. • Check the engine crankcase oil level.

  • Page 91: Diesel Engine Will Not Run At High Speed Or Turbo Speed

    Service Manual – SC8000 Engine System, Diesel Diesel Engine Will Not Run at High Speed or Turbo Speed Conditions: • With the engine running at idle, press the engine speed switch. (Note that when the speed switch indicator light is not on, the engine will run at low idle.) The indicator will turn green and the engine will run at high speed (2200 rpm).

  • Page 92: Troubleshooting The Kubota Engine Speed Governing System

    Service Manual – SC8000 Engine System, Diesel Troubleshooting the Kubota Engine Speed Governing System Follow these procedures if the engine will not run at operating speed (2200 RPM) or high speed (2400 RPM). Governor – APECS 3000, manufactured by Woodward (manual # SE-4049). Additional information can be found on their website.

  • Page 93: Specifications

    Service Manual – SC8000 Engine System, Diesel Specifications Engine Specifications Kubota V1505-B-1 Vertical, liquid cooled, four-cylinder, four-cycle diesel engine, Engine Type turbo-charged Displacement 91.41 cubic inches [1498cc] Fuel Diesel fuel No. 2-D (ASTM D975) Injection Pump Bosch MD type mini pump...

  • Page 94: Connector Callout - Relay Pcb

    Service Manual – SC8000 Engine System, Diesel Connector Callout – Relay PCB Pin# Color Type Voltage Pin Description and Function J7-1 VIO/GRA Input Module relays load power supply J7-2 BLU/PINK Output Engine ECU starter relay command J7-3 WHT/BRN Input 0V Floats...

  • Page 95: Engine System, Lpg

    Overview The LPG SC8000 machines use a four-cylinder 1.6L WG 1605 Kubota engine to drive two hydraulic pumps. Note: Also refer to the following manufacturer’s technical literature for the WG 1605 Kubota Engine: •...

  • Page 96: Engine Start And Run Circuit Description

    Service Manual – SC8000 Engine System, LPG Engine Start and Run Circuit Description In between the Drive Box and the Engine system is a “Relay PCB”. It is a small printed circuit board with two relays on it. One of the relays provides power out to the engine system to turn it on (or off). The other relay provides power out to the engine starter when the key is turned to the crank position and the drive pedal is in the neutral position.

  • Page 97: Engine Protection - Low Oil Pressure Shutdown

    Service Manual – SC8000 Engine System, LPG Note that if the sends a signal from to the Driver Box START INHIBIT J1-22 K3 RELAY CONTROL SWITCH to open the switch, no ground will be provided to the relay coil , the...

  • Page 98: Component Locations

    Service Manual – SC8000 Engine System, LPG Component Locations LPG Electrical Components Note: Some of the photos in this section are of an engine before it is installed in the machine for better visual clarity.The engine is fitted for a different model machine (SW8000) so some details are slightly different like the air cleaner, air inlet and exhaust.
  • Page 99 Service Manual – SC8000 Engine System, LPG...
  • Page 100 Service Manual – SC8000 Engine System, LPG Figure 5. Top, Rear Figure 4. Top, Front Engine Coolant Ground Sensor Alternator Mixer Assembly Direct Electronic Cam Position Pressure Regulator Sensor (DEPR) Pre-Catalyst Sensor Post-Catalyst Oil Filter Sensor Right Rear Wheel Figure 6. Oxygen Sensors...

  • Page 101: Maintenance And Adjustments

    Service Manual – SC8000 Engine System, LPG Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Maintenance Schedule...

  • Page 102: Engine Oil

    Service Manual – SC8000 Engine System, LPG Item Service Interval Every Every Every Every Every Every Every Every 8 hrs 50 hrs 100 hrs 150 hrs 1000 hrs 2000 hrs Year (daily). (weekly) Years *** Check LPG vaporizer Replace radiator hoses and...
  • Page 103 Service Manual – SC8000 Engine System, LPG Replacing Engine Coolant One possible cause of engine overheating is trapped air in the cooling system. It’s recommended that you use a Cooling System Tool when changing the engine coolant. The Cooling System Tool pulls a vacuum on the cooling system prior to filling to prevent air from being trapped in the cooling system.

  • Page 104: Engine Air Filter Maintenance

    Service Manual – SC8000 Engine System, LPG Engine Air Filter Maintenance Caution! When servicing the engine air filter elements, use extreme care to prevent loose dust from entering the engine. Dust can severely damage the engine. Service the air cleaner more frequently under severe dusty or dirty conditions.

  • Page 105: Engine Overheating Problems

    Service Manual – SC8000 Engine System, LPG Problem Cause Correction The engine will not No power to the Ign. Switch • Check circuit breaker CB5 and reset if necessary. start. Input terminal on the A3 • Check the continuity from the Ignition Switch to the Engine System.
  • Page 106 Service Manual – SC8000 Engine System, LPG Specifications WG1605-L-E3 Model LPG fuel Number of Cylinders Four Type Vertical, water cooled, four-cycle LPG engine Bore × Stroke 79.0 × 78.4 mm (3.11 × 3.09 in.) Total Displacement 1.537 L (93.79 cu.in.)

  • Page 107: Shop Measurements

    Service Manual – SC8000 Engine System, LPG Shop Measurements The following information was gathered by measuring one machine. While the values recorded cannot serve as “true specifications” they may help you recognize what normal looks like and give you some standard of comparison.

  • Page 108: Special Tools

    Service Manual – SC8000 Engine System, LPG Special Tools Diagnostic Communication Cable and software, p/n 56305647 Note: The “Ecom” cable is used but the software on the CD is for the GM engines. New software must be ordered or downloaded from Customer Zone to use on the Kubota engine..

  • Page 109: Hydraulic System

    Service Manual – SC8000 Hydraulic System Functional Description Overview The hydraulic system powers the drive wheel motor, scrub brushes, vacuum fan and side brush/brooms (if the machine is so equipped). The hydraulic system also actuates the main scrub deck and side brush/broom lift cylinders, the squeegee lift cylinder and the drive wheel steering assembly.

  • Page 110: Electrical Schematic

    Service Manual – SC8000 Hydraulic System Electrical Schematic Battery Circuit Breaker, 20A Fuse, 100A 12 VDC Relay, Power Circuit Breaker, 15A Circuit Breaker, 10A Switch, Ignition J2-1 J2-23 (VACC5) Relay, Power J2-12 (VACC4) J1-12 Ignition_KeyPos J2-8 Bat - Vacuum Fan S1...

  • Page 111: Hydraulic Schematic

    Service Manual – SC8000 Hydraulic System Hydraulic Schematic...

  • Page 112: Component Locations

    Service Manual – SC8000 Hydraulic System Component Locations Major Components Steer Steering Cylinder Pump Fan Motor Assembly Assembly Assembly Pump Hydraulic Assembly Motor Pump Assembly Assembly, Low-speed Drive Motor Assembly Valve Hydraulic Block Reservoir Motor Assembly Assembly Assembly Scrub Lift...

  • Page 113: Hydraulic Cylinders

    Service Manual – SC8000 Hydraulic System Hydraulic Cylinders Squeegee Cylinder Steer Assembly Steer Cylinder Cylinder Assembly Scrub Lift Assembly Cylinder Assembly located as shown. Squeegee Cylinder Assembly Scrub Lift Cylinder Assembly Hydraulic Motors Vacuum Fan Motor Vacuum Steering Assembly Steering Pump...

  • Page 114: Hydraulic Pumps

    Service Manual – SC8000 Hydraulic System Hydraulic Pumps Propulsion (transport) Piston Pump Assembly Accessory Pump Assembly are connected to the engine output shaft and are located as shown. The Accessory includes the two auxiliary Pump Assembly hydraulic pumps. Propulsion (transport)
  • Page 115 Service Manual – SC8000 Hydraulic System Solenoid Valves System Relief Valves located on the Hydraulic Valve Block/Manifold shown. S2 (top S3 (bottom)
  • Page 116 Service Manual – SC8000 Hydraulic System Right Side Scrub/Sweep Solenoid Valve controls the right side scrub/sweep S8/L8 motor(s). is located above the front S8/L8 end of the Scrub Deck Scrub Deck S8/L8 Right Side Scrub Lift Cylinder Solenoid controls the side scrub lift Valve S9/L9 cylinder.

  • Page 117: Hydraulic Manifold Assembly Component Location Key

    Service Manual – SC8000 Hydraulic System Hydraulic Manifold Assembly Component Location Key Item# Component Description and Hydraulic Circuit Function LI/S1 Solenoid coil and valve cartridge, vacuum fan motor, coil 8 ohms L2/S2 Solenoid coil and valve cartridge, squeegee lift cylinder DOWN (top), coil 8 ohms...

  • Page 118: Maintenance And Adjustments

    Service Manual – SC8000 Hydraulic System Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Hydraulic Oil Open and prop the engine cover to access the...

  • Page 119: Troubleshooting

    Service Manual – SC8000 Hydraulic System Troubleshooting General Troubleshooting Problem Cause Correction Fault code 34 Hydraulic temperature fault that sets when Clean the cooling fins on the displayed on the hydraulic oil temperature exceeds 220 F for hydraulic oil cooler to ensure 15 seconds.
  • Page 120 Service Manual – SC8000 Hydraulic System • If the operational pressure is within range but the motor speed is too slow, the problem could be in the motor. • If the broom motor operational psi reading is above the bypass psi but is below the operational psi, check the broom adjustment and wear.

  • Page 121: Specifications

    Service Manual – SC8000 Hydraulic System Specifications Component Specifications Reservoir capacity 10 gal. [37.8 L] Fluid type 10W-30 engine oil Type – manually-variable displacement, axial piston Displacement – 1.44 CIR Speed – 3600 RPM max. Propulsion (Wheel Drive) Hydraulic Pump Ratings Continuous pressure –...
  • Page 122 Service Manual – SC8000 Hydraulic System Displacement Relief Accessory Pump 2a Circuits Cu. In. Accessory Pump 2a non-priority branch, engine @ 1.20 8.42 2200 *370 2700 2200 RPM, no systems running (test port TP2) Main scrub brush motors (only) setting (A) no load...
  • Page 123 Service Manual – SC8000 Hydraulic System Hydraulic Reservoir Capacity Hydraulic reservoir capacity: 10 gallons Oil Type: 10W-30 Hydraulic Truth Table Electrical Solenoid’s Energized Status – Component to Operate Solenoid Functions Recovery Tank Fan Squeegee Down Squeegee Up Scrub Brushes On...

  • Page 124: Special Tools

    Service Manual – SC8000 Hydraulic System Special Tools Hydraulic test gauge w/connector, 3000 psi range, p/n 56504516...

  • Page 125: Options And Accessories

    Service Manual – SC8000 Options and Accessories Description Illustration Detergent Bottles Back-up Alarm Kit The Back-up Alarm Kit includes the Back-up Alarm Unit, Pigtail Wire Assembly and mounting hardware. Warning Beacon Kit The Warning Beacon Kit mounts directly on the machine and is designed for machines without an overhead guard.
  • Page 126 Service Manual – SC8000 Options and Accessories Description Illustration Overhead Guard Beacon Kit The Overhead Guard Beacon Kit mounts onto the overhead guard. Brake/Signal Light Kit The Brake/Signal Light Kit includes amber front signal lights, red rear stop/signal lights and wiring harnesses.
  • Page 127 Service Manual – SC8000 Options and Accessories Description Illustration Foot Guard Kit Roller Bumper Kit Note that the right side roller bumper is standard on 60” and 67” with right side scrub. Wash Hose Kit (shown mounted behind Operator seat)
  • Page 128 Service Manual – SC8000 Options and Accessories Description Illustration Overhead Guard Canopy Kit (overhead guard sold separately) Rear Bumper Kit Recovery Tank Clean-out Kit Recovery Tank Debris Tray Kit...
  • Page 129 Service Manual – SC8000 Options and Accessories Description Illustration Drain Hose Extension Remote Foot-actuated Horn Switch Kit Solution Auto-fill Kit Right-hand/Dual Armrest Kit Seat Belt Kit for Standard Seat...
  • Page 130 Service Manual – SC8000 Options and Accessories Description Illustration Deluxe Suspension Seat Kit (includes right-hand armrest and seat belt) Under Hood Light Kit (includes trouble light with magnetic base on an extendable cable) Vacuum Wand Kit (shown mounted on machine)

  • Page 131: Recovery System

    Service Manual – SC8000 Recovery System Functional Description System Overview The recovery system picks up the scrubbing solution from the floor and directs it to the recovery tank. The vacuum fan, powered by an auxiliary hydraulic motor driven by the engine, draws air from the recovery tank to create a vacuum in the tank and at the squeegee to pick up the solution.

  • Page 132: Electrical Circuit Description

    Service Manual – SC8000 Recovery System Electrical Circuit Description The Vacuum Fan Solenoid Valve controls the hydraulic oil flow to the fan motor. Note that is not a proportional valve and is either on or off. The following conditions must be met for...
  • Page 133 Service Manual – SC8000 Recovery System Vacuum Fan On Solenoid Vacuum Fan When the vacuum fan is switched on, the is energized S1 Vacuum Fan Control Valve S1 Vac Fan Control Valve ) to direct the hydraulic Solenoid On oil flow from the (auxiliary) Aux.

  • Page 134: Component Locations

    Service Manual – SC8000 Recovery System Component Locations Recovery Tank is on Recovery Tank the left rear side of the Cuffed Hose machine. Vacuum Fan Assembly Assembly Recovery Vacuum Fan Assembly Tank Vacuum driven by a hydraulic Cover Hose Assembly motor, is located on the right side of the machine.

  • Page 135: Daily Maintenance

    Service Manual – SC8000 Recovery System Daily Maintenance Warning! Before performing any machine maintenance, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. • Check the gasket on the recovery tank cover for damage/wear.

  • Page 136: Removal And Installation

    Service Manual – SC8000 Recovery System Removal and Installation Warning! Before removing or reinstalling any machine components, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Recovery Tank Caution: The recovery tank is relatively heavy. It’s recommended that the recovery tank be removed by two or more persons to prevent possible personal injury or damage to the recovery tank.
  • Page 137 Service Manual – SC8000 Recovery System Unhook the from the Cable Assembly Recovery , then carefully swing the Tank Recovery Tank down and lift it off of the machine. Recovery Tank Cable Assembly Note: When you reinstall the , set the...

  • Page 138: Specifications

    Service Manual – SC8000 Recovery System Specifications Component Specifications Shaft Rotation – Clockwise (as viewed from shaft end) Pressure Ratings: Fan Assembly Motor • 3000 PSI – Continuous • 4000 PSI –Intermittent Displacement – 0.129 CIR Vacuum Water Lift (Sealed) 33.7 inches H...

  • Page 139: Scrub System, Cylindrical

    Service Manual – SC8000 Scrub System, Cylindrical Functional Description Overview The cylindrical scrub system includes the main scrub deck and hopper, the two hydraulic brush motors, the hydraulic lift cylinder that lowers and raises the deck, and the associated hydraulic solenoid valves.
  • Page 140 Service Manual – SC8000 Scrub System, Cylindrical Scrub Brush Motors For the scrub brush motors to run: • The must receive a signal from the that the drive pedal has been moved Driver Box Drive Pedal Sensor R1 from the neutral position.

  • Page 141: Cylindrical Scrub System Hydraulic Diagrams

    Service Manual – SC8000 Scrub System, Cylindrical Cylindrical Scrub System Hydraulic Diagrams Scrub Motors Off Scrub Brush When the scrub motors are off, the Motors (1.20 CID) sends Accessory Pump oil to the which Priority Flow Divider Cooler Scrub Brush...
  • Page 142 Service Manual – SC8000 Scrub System, Cylindrical Scrub Lift Cylinder with Engine Shut Off When the engine is shut Scrub Lift off, the de-energized Scrub Cylinder valve Cylinder Lock L6 Scrub holds the oil pressure Cylinder Lock L6 from the bottom port on...
  • Page 143 Service Manual – SC8000 Scrub System, Cylindrical Scrub Lift Cylinder On with Engine Running When the engine is running and Scrub Lift the scrub system is switched on, the Cylinder pumps the oil through Accessory Pump Scrub and to the...

  • Page 144: Component Locations

    Service Manual – SC8000 Scrub System, Cylindrical Component Locations Brush Housing houses Weldment Left Skirt the scrub brushes, Assembly Drive Motor Assemblies the brush drive components. Hub- Scrub Lift Scrub Lift Broom Cylinder Cylinder Assembly Driver Assembly raises and lowers the scrub deck.

  • Page 145: Troubleshooting

    Service Manual – SC8000 Scrub System, Cylindrical Troubleshooting General Troubleshooting Problem Cause Correction The scrub deck Scrub brush pressure valve • Check L5 down and L7 up pressure valve solenoid will not extend solenoids over current (fault coils (on same fault line) for wiring problems, L5...
  • Page 146 Service Manual – SC8000 Scrub System, Cylindrical Problem Cause Correction Scrub deck The scrub deck pressures Reprogram the scrub deck pressures as required. pressures will not are set incorrectly in the (Refer to the Control System/Control Board change; inoperative User Options Menu.

  • Page 147: Main Scrub Deck And Right Side Scrub Down

    Service Manual – SC8000 Scrub System, Cylindrical Main Scrub Deck and Right Side Scrub Down The following conditions must be met for the Main Scrub Deck to move to the scrub (down) position: • The must be on. Key Switch •...

  • Page 148: Main Scrub Deck And Right Side Scrub Pressure

    Service Manual – SC8000 Scrub System, Cylindrical Main Scrub Deck and Right Side Scrub Pressure The following conditions must be met for the Main Scrub Deck to apply the selected downward scrub pressure: • The must be on. Key Switch •...

  • Page 149: Main Scrub And Side Sweep/Scrub On

    Service Manual – SC8000 Scrub System, Cylindrical Main Scrub and Side Sweep/Scrub On The following conditions must be met for the Main Scrub Deck motors to run: • The must be on. Key Switch • The engine must be running.

  • Page 150: Specifications

    Service Manual – SC8000 Scrub System, Cylindrical Specifications General Specifications Component Specifications Current – 1.5 amps Scrub Brush Solenoid Valve Nominal Coil Resistance – 8 ohms Current – 2.1 amps Scrub Pressure Proportional Nominal Coil Resistance – 2.2 ohms Down Solenoid Valve L5 Voltage Range (PWM) –...

  • Page 151: Special Tools

    Service Manual – SC8000 Scrub System, Cylindrical Special Tools Hydraulic test gauge w/connector, 3000 psi range, p/n 56504516...

  • Page 152: Scrub System, Right Side

    Service Manual – SC8000 Scrub System, Right Side Functional Description Overview The right side scrub system (optional on some models) includes the right brush assembly, right brush hydraulic motor, the hydraulic scrub cylinder that lowers and raises the right scrub assembly, and the associated hydraulic solenoid valves.

  • Page 153: Right Side Scrub System Hydraulic Diagrams

    Service Manual – SC8000 Scrub System, Right Side Right Side Scrub Brush Motor For the right side scrub brush motor to run: • The must receive a signal from the that the drive pedal has been moved Driver Box Drive Pedal Sensor R1 from the neutral position.
  • Page 154 Service Manual – SC8000 Scrub System, Right Side Side Scrub Motor On From Cylindrical When the is on, the Right Side Scrub Motor Side Sweep/Scrub Valve Scrub Brush Motors is energized to direct the oil from the Cylindrical Scrub Brush through the .

  • Page 155: Component Locations

    Service Manual – SC8000 Scrub System, Right Side Side Scrub Lift Cylinder On When the engine is running and the main scrub system and right side scrub To Reservoir brush are switched on, the Side Scrub Side Scrub is de-energized to direct the...
  • Page 156 Service Manual – SC8000 Scrub System, Right Side Right Side Scrub/Sweep Solenoid Valve controls the right side scrub motor. S8/L8 is located above the front end of the S8/L8 Scrub Deck Scrub Deck S8/L8 Right Side Scrub Lift Cylinder Solenoid...

  • Page 157: Maintenance And Adjustments

    Service Manual – SC8000 Scrub System, Right Side Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Side Brush Tilt Adjustment...

  • Page 158: Troubleshooting

    Service Manual – SC8000 Scrub System, Right Side Troubleshooting General Troubleshooting Problem Cause Correction The side scrub Right Scrub System not Make sure the side scrub system is installed in the brush will not extend installed Configuration Menu. (Refer to the...

  • Page 159: Main Scrub Deck And Right Side Scrub Down

    Service Manual – SC8000 Scrub System, Right Side Main Scrub Deck and Right Side Scrub Down The following conditions must be met for the Right Side Scrub Brush to move to the scrub (down) position: • The must be on.

  • Page 160: Main Scrub And Side Sweep/Scrub On

    Service Manual – SC8000 Scrub System, Right Side Main Scrub and Side Sweep/Scrub On The following conditions must be met for the Right Side Scrub Brush motor to run: • The must be on. Key Switch • The engine must be running.

  • Page 161: Specifications

    Service Manual – SC8000 Scrub System, Right Side Specifications Component Specifications Current – 1.5 amps Scrub Brush Solenoid Valve Nominal Coil Resistance – 8 ohms Current – 1.5 amps Side Sweep/Scrub Solenoid Valve L8 Nominal Coil Resistance – 8 ohms Current –...

  • Page 162: Solution System

    Service Manual – SC8000 Solution System Functional Description Overview The solution system delivers water, or detergent and water, to the floor for the scrub system. The standard solution system includes , solution- Solution Tank Solution Solution empty switch, Solution Pump...

  • Page 163: Detergent System

    Service Manual – SC8000 Solution System Detergent System The AXP /EDS and ™ EcoFlex detergent ™ systems use dual diaphragm Detergent Main (M10 and M11) to Pumps Solution pump detergent into the Solenoid Valve solution flow upstream of Main Solution Solenoid (L10).

  • Page 164: Extended Scrub System

    Service Manual – SC8000 Solution System Extended Scrub System Machines equipped with the optional extended Float scrub system will pump Solution Switch the recovered water Tank Quick- disconnect from the Recovery Tank to the scrub brushes. Solution Solution The extended scrub...

  • Page 165: Right Side Scrub Brush

    Service Manual – SC8000 Solution System Right Side Scrub Brush On machines equipped with the optional Right Side , the solution is Scrub Brush plumbed from the solution system to the Right Solution (L11). The Solenoid Valve Right Solution Solenoid...

  • Page 166: Dustguard ™ Spray Nozzles

    Service Manual – SC8000 Solution System DustGuard Spray Nozzles ™ The DustGuard system ™ uses a separate Mist Pump Mist (M5) to pump solution Mist Spray to the Pump Mist Spray Nozzles Nozzles at the side brooms. The will switch on...

  • Page 167: Circuit Descriptions

    Service Manual – SC8000 Solution System Circuit Descriptions Main Solution System control the solution flow to the scrub brushes. Note Solution Pump M4 Main Solution Solenoid Valve L10 that is not a proportional valve and is either on or off. The voltage from...
  • Page 168 Service Manual – SC8000 Solution System Detergent System receive voltage from on the Driver Box. Note Detergent Pumps M10 J3-19 J3-20 J3-21 J3-22 that the voltage to the changes polarity to “extend” (deliver detergent) and “retract” the Detergent Pumps pump.
  • Page 169 Service Manual – SC8000 Solution System Extended Scrub System pumps recovered water from the recovery tank to the brushes. The following Extended Scrub Pump M6 conditions must be met for the extended system to operate: • The extended scrub system must be installed and enabled.
  • Page 170 Service Manual – SC8000 Solution System Right Side Scrub controls the solution flow from the to the optional right Right Solution Solenoid Valve L11 Solution Pump M4 side scrub brush. Note that is not a proportional valve and is either on or off. The following conditions must be met for solution to flow to the right side scrub brush: •...
  • Page 171 Service Manual – SC8000 Solution System Wash Hose System has it own internal pressure switch that switches on the when the wash hose Wand Pump M8 Wand Pump nozzle is opened and the pressure in the wash hose drops to 40 psi. When the wash hose nozzle is closed and the pressure in the wash hose reaches 60 psi, the pressure switch shuts off the Pump.
  • Page 172 Service Manual – SC8000 Solution System DustGuard System ™ pumps solution to the two DustGuard nozzles adjacent to the side brooms while sweeping ™ Mist Pump M5 to reduce dust. The following conditions must be met for the to operate: Mist Pump •...

  • Page 173: Component Locations

    Service Manual – SC8000 Solution System Component Locations Extended Scrub Pump M6 Extended Scrub (Float) Switch S7 Recovery Tank Full Switch S2...
  • Page 174 Service Manual – SC8000 Solution System Mist Pump M5 and Solution Pump M4 (top) Detergent Pumps M10 and M11 Solution Filter Wand Pump M8 (bottom) (behind cover panel)

  • Page 175: Maintenance And Adjustments

    Service Manual – SC8000 Solution System Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. To Clean the Solution Filter Screen Close the solution shutoff valve.

  • Page 176: To Clean The Extended Scrub System Strainer

    Service Manual – SC8000 Solution System To Clean the Extended Scrub System Strainer Open the recovery tank cover. Rinse any accumulated material off of the extended scrub system strainer using normal water hose pressure. Close the recovery tank cover. To Clean the Solution Delivery Trough Clean the holes in the solution delivery trough to ensure even solution distribution.

  • Page 177: Detergent System Maintenance

    Service Manual – SC8000 Solution System After you rotate the , make sure the is holding the Plastic Nozzle Adapter Brass Nozzle Adapter Plastic securely in the . Tighten the to the Nozzle Adapter Spray Nozzle Bracket Brass Nozzle Adapter Plastic Nozzle as necessary.
  • Page 178 Service Manual – SC8000 Solution System To Purge Weekly (the scrub system must be off) Disconnect and remove the detergent cartridge. Install and connect a cartridge filled with clean hot water. Turn the key switch on and wait a few seconds for the start-up sequence to finish.
  • Page 179 Service Manual – SC8000 Solution System To Change the Detergent Mix Ratio (the scrub system must be on) Press and hold the detergent switch for two seconds. Release the switch once the detergent indicator begins flashing. While the light is flashing, press and release the...

  • Page 180: Troubleshooting

    Service Manual – SC8000 Solution System Troubleshooting General Troubleshooting Problem Cause Correction No solution to the No voltage to the main 1. Check the wiring and circuit breakers upstream of main brushes solution pump the pump. 2. Check the J3-2 output from the Driver Box.
  • Page 181 Service Manual – SC8000 Solution System Problem Cause Correction No solution to the The extended scrub function Install the extended scrub function in the main brushes in is not installed in the configuration menu. the extended scrub configuration menu. mode Solution pump(s) over •...
  • Page 182 Service Manual – SC8000 Solution System Problem Cause Correction No detergent flow to The detergent system not Install the detergent system in the configuration the solution system installed in the configuration menu. menu. The detergent supply lines Check the detergent lines and clean/replace as are clogged.

  • Page 183: Main And Right Side Solution Valves And Solution Pump

    Service Manual – SC8000 Solution System Main and Right Side Solution Valves and Solution Pump The following conditions must be met for the Main Right Side Solution Valves Main Solution Pump operate: • The must be on. Key Switch MAIN & RIGHT SIDE SCRUB BRUSH SOLUTION VALVES &...

  • Page 184: Specifications

    Service Manual – SC8000 Solution System Specifications Component Specifications Component Specifications Voltage – 12 VDC Max. Current – 11.5 amps @ 60 psi Solution Pump M4 Extended Scrub Pump M6 Open Flow – 3.4 GPM Internal Bypass – 60 psi Voltage –...

  • Page 185: Solution And Detergent Delivery Rates

    Service Manual – SC8000 Solution System Solution and Detergent Delivery Rates Setting 1 – 1.6 gal/min [6 L/min] Setting 2 – 1.9 gal/min [7.2 L/min] Solution system flow rates (five settings) Setting 3 – 2.3 gal/min [8.7 L/min] Setting 4 – 2.7 gal/min [10.2 L/min] Setting 5 –...

  • Page 186: Squeegee System

    Service Manual – SC8000 Squeegee System Functional Description Overview The squeegee system includes the squeegee assembly, squeegee mounting assembly, squeegee lift weldment and the squeegee lift cylinder. The squeegee assembly is mounted at the bottom rear of the machine and picks up the water from the floor.

  • Page 187: Squeegee System Hydraulic Diagrams

    Service Manual – SC8000 Squeegee System Squeegee System Hydraulic Diagrams Squeegee Down When the main scrub or recovery system is Squeegee Lift Cylinder actuated, the Squeegee Down Solenoid Valve L2 Squeegee energizes to direct the oil to the top port on the Down .
  • Page 188 Service Manual – SC8000 Squeegee System Squeegee Locked When the squeegee is up (retracted), both Squeegee Lift Cylinder Squeegee Down Solenoid Valve L2 Squeegee Up Solenoid Valve L3 de-energized to shut off the flow of oil to and lock the Squeegee Lift Cylinder squeegee in the up position.

  • Page 189: Component Locations

    Service Manual – SC8000 Squeegee System Component Locations Squeegee Assembly mounts onto the Squeegee Mount Assembly Squeegee Lift Cylinder Squeegee Mount Assembly is fastened to the Squeegee . The Lift Weldment Squeegee is connected to Lift Cylinder Squeegee Lift Weldment...

  • Page 190: Troubleshooting

    Service Manual – SC8000 Squeegee System Squeegee Down Solenoid Valve and the Squeegee Up Solenoid that control the Valve S3 Squeegee are located on the Lift Cylinder hydraulic manifold at the rear of the machine as shown. Squeegee Down Solenoid...

  • Page 191: Vacuum Fan On And Squeegee Down

    Service Manual – SC8000 Squeegee System Vacuum Fan On and Squeegee Down The following conditions must be met for the Vacuum Fan to run and for the squeegee to be lowered to the pick-up position: • The must be on.

  • Page 192: Vacuum Fan Off And Squeegee Up

    Service Manual – SC8000 Squeegee System Vacuum Fan Off and Squeegee Up The following conditions must be met for the Vacuum Fan to shut off and for the squeegee to be raised to the travel position: • The must be on.

  • Page 193: Specifications

    Service Manual – SC8000 Squeegee System Specifications Component Specifications Current – 1.5 amps Squeegee Down Solenoid Valve L2 Nominal Coil Resistance – 8 ohms Current – 1.5 amps Squeegee Up Solenoid Valve L3 Nominal Coil Resistance – 8 ohms...

  • Page 194: Steering System

    Service Manual – SC8000 Steering System Functional Description Overview The steering system includes the steering unit, Hydraulic Steer Cylinder Rack Connections to Spur Gear Steering Pump The steering wheel rotates the shaft on the steering pump which controls the oil flow to the...

  • Page 195: Hydraulic Diagrams

    Service Manual – SC8000 Steering System Hydraulic Diagrams Steering System in Motion When the engine is running and the Operator turns the steering wheel, sends Auxiliary Pump oil through the Priority Flow to the Divider Steering Unit Steering directs Unit...

  • Page 196: Component Locations

    Service Manual – SC8000 Steering System Steering System Stationary When the steering wheel is stationary, no oil is flowing through the Steering Steering Unit Unit Metering Valve Steer Cylinder Metering Valve Check Valve Steer Priority Cylinder Flow Divider Auxiliary Pump...

  • Page 197: Steer Cylinder

    Service Manual – SC8000 Steering System Steer Cylinder is mounted Steer Cylinder horizontally and drives the rack Steer Cylinder and spur gear connected to the drive wheel assembly Steer Cylinder...

  • Page 198: Troubleshooting

    Service Manual – SC8000 Steering System Troubleshooting Problem Cause Correction The steering Backlash in the spur gear Adjust the rack so it’s closer to the spur gear. “wanders”. and rack The steering is hard Not enough oil to the Clean or replace the priority flow divider cartridge on or “jerky”.

  • Page 199: Sweep System, Side Broom

    Service Manual – SC8000 Sweep System, Side Broom Functional Description Overview The side broom sweep system is available with either with a single left-hand side broom (with right side scrub brush), or with dual side brooms. Both configurations use DustGuard nozzles to spray solution in ™...

  • Page 200: Side Broom Sweep System Hydraulic Diagrams

    Service Manual – SC8000 Sweep System, Side Broom Side Broom Motor(s) For the side broom motor(s) to run: • The must receive a signal from the that the drive pedal has been moved Driver Box Drive Pedal Sensor R1 from the neutral position.
  • Page 201 Service Manual – SC8000 Sweep System, Side Broom Side Broom Motor(s) On When the two , or the From Cylindrical Side Broom Motors Right Side Scrub Motor Scrub Brush Motors and left are on, the Side Broom Motor Side Sweep/Scrub Valve L8...

  • Page 202: Component Locations

    Service Manual – SC8000 Sweep System, Side Broom Component Locations Mist Single (left-hand) Sweep Pump M5 The single (left-hand) sweep system is installed on the front of the machine Side in conjunction with a right-hand scrub Sweep/Scrub system. Valve L8...

  • Page 203: Dual Sweep

    Service Manual – SC8000 Sweep System, Side Broom Dual Sweep The dual sweep system Mist is installed on the front Pump M5 of the machine and uses Side Broom Assemblies with no right side scrub Side motor. Sweep/Scrub Valve L8...

  • Page 204: Maintenance And Adjustments

    Service Manual – SC8000 Sweep System, Side Broom Right Side Scrub/Sweep Solenoid Valve controls the side sweep motor(s). S8/L8 is located above the front end of the Scrub Deck Scrub Deck S8/L8 Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged.
  • Page 205 Service Manual – SC8000 Sweep System, Side Broom Connect the jumper wiring as shown to run the actuator motor in the mode. Retract (IN) Hold the steel Drive Nut Tube press the switch to run the Drive Nut toward the motor housing (its Tube limit).

  • Page 206: Troubleshooting

    Service Manual – SC8000 Sweep System, Side Broom Troubleshooting General Troubleshooting Problem Cause Correction Side Sweep System Right side scrub/sweep • Check L8 solenoid coil wiring for problems (+ ORN not working motor solenoid valve over and - BLK/WHT). current (fault code 16 •...

  • Page 207: Main Scrub And Side Sweep/Scrub On

    Service Manual – SC8000 Sweep System, Side Broom Main Scrub and Side Sweep/Scrub On The following conditions must be met for the Side Sweep Broom motor(s) to run: • The must be on. Key Switch • The engine must be running.

  • Page 208: Specifications

    Service Manual – SC8000 Sweep System, Side Broom Specifications Component Specifications Current – 1.5 amps Scrub Brush Solenoid Valve Nominal Coil Resistance – 8 ohms Current – 1.5 amps Side Sweep/Scrub Solenoid Valve L8 Nominal Coil Resistance – 8 ohms Displacement –...

  • Page 209: Wheel System, Non-Traction

    Service Manual – SC8000 Wheel System, Non-traction Functional Description The non-traction wheel system supports the rear of the machine and includes the braking system. Rear Wheel Assemblies are fastened to the Finished 3/8”-16 x .75” with a single Spindles 3/8”-...

  • Page 210: Maintenance And Adjustments

    Service Manual – SC8000 Wheel System, Non-traction Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off and the key is removed from the machine. Brake Tension Adjustment Remove the floor weldment, located in the Operator’s compartment, to access the...

  • Page 211: Troubleshooting

    Service Manual – SC8000 Wheel System, Non-traction Troubleshooting Problem Cause Correction The wheels are The wheel bearings are Check the wheel assembly, wheel bearings and making excess worn. spindle and replace as required. noise. The wheel and/or spindle is damaged.

  • Page 212: Wheel System, Traction

    Service Manual – SC8000 Wheel System, Traction Functional Description Overview The traction wheel system includes the hydraulic traction drive motor and drive wheel, and the foot pedal/ hydroback system. The traction drive motor is driven by the variable-displacement Piston Pump...

  • Page 213: Traction Drive Motor

    Service Manual – SC8000 Wheel System, Traction Traction Drive Motor is an 18.3 Traction Drive Motor CIR hydraulic motor and drives Front Wheel A tow valve, when actuated, bypasses the hydraulic circuit from the piston pump to the to allow the...

  • Page 214: Electrical Circuit Description

    Service Manual – SC8000 Wheel System, Traction Electrical Circuit Description For the engine to start, the must read a voltage through (rotary) that’s within Driver Box Drive Pedal Sensor the deadband range, indicating that the foot pedal is in the neutral position.
  • Page 215 Service Manual – SC8000 Wheel System, Traction Traction Drive Motor in Forward or Reverse When the engine is running and the machine is moving either forward or in reverse, the is sending oil to the Piston Pump Traction to drive the front wheel in the Drive Motor appropriate direction.

  • Page 216: Component Locations

    Service Manual – SC8000 Wheel System, Traction Component Locations Piston Pump, Hydroback and Rotary Sensor Piston Pump is the blue pump Piston Pump mounted directly in front of the engine. Hydroback Centering Unit mounted on the left side of the...

  • Page 217: Maintenance And Adjustments

    Service Manual – SC8000 Wheel System, Traction Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Foot Pedal/Hydroback Neutral Adjustment Note: When servicing the hydrostatic drive system, always check for any machine creeping (movement) when the machine is in neutral with the engine running.

  • Page 218: Foot Pedal Neutral Deadband Adjustment

    Service Manual – SC8000 Wheel System, Traction 12. Check the maximum forward and reverse wheel speeds and adjust the pedal stops as necessary. Refer to table in the section for nominal wheel Specifications/Propulsion Pump Circuits Hydraulic System speeds. 13. Turn the engine off, then see if it will restart. If engine will not start, the...

  • Page 219: Troubleshooting

    Service Manual – SC8000 Wheel System, Traction Press the Side Broom Up ( ) and Down ( ) switches to scroll through the available percentages. Note: The ideal neutral deadband percentage range is one that allows reliable starting, yet still actuates the scrub functions with minimal pedal travel.

  • Page 220: Removal And Installation

    Service Manual – SC8000 Wheel System, Traction Removal and Installation Warning! Before removing or reinstalling any machine components, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Push/Pull Control Cable Replacement Lower the side broom(s).
  • Page 221 Service Manual – SC8000 Wheel System, Traction Service Note: To thread the new from the foot pedal assembly to the Push/Pull Control Cable Hydroback, we recommend that you SECURELY attach the new to the old Cable , then carefully pull the new...

  • Page 222: Hydroback Replacement

    Service Manual – SC8000 Wheel System, Traction Hydroback Replacement Empty and remove the recovery tank. Loosen the jam nut holding the Push/ Piston Piston Pump Pull Control Cable Pump Lever Hydroback Centering Weldment in the Unit Hydroback by the Adjuster Plate...

  • Page 223: Traction Drive Motor Hose Routing

    Service Manual – SC8000 Wheel System, Traction Traction Drive Motor Hose Routing If the traction drive motor or the to the motor are replaced or repaired, it’s important to Hydraulic Hoses route the correctly when reinstalled to prevent wear or damage to the...

  • Page 224: Specifications

    Service Manual – SC8000 Wheel System, Traction Specifications Component Specifications Component Specifications Tire (front 1) drive/steer Size 18 in x 6 in [457 mm x 152 mm] P7 solid Displacement – 18.3 CIR Traction Drive Motor Shaft Rotation – Clockwise (as viewed from slot end) Displacement –...

  • Page 225: Wheel Drive System Torque Specifications

    Service Manual – SC8000 Wheel System, Traction Wheel Drive System Torque Specifications Description Torque Specification Steering Torque to 40 ft.- Steering Castle Castle lb.,then loosen to (Spindle) Nut (Spindle) Nut align cotter pin. ¾”-16 Hex Torque to 150 ft.-lb. Jam Nut ½”-20 x 1.25...

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