Page 1: Service Manual
SC8000 Service Manual Advance Models: 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 56108122 SC8000 48 LPG ECOFLEX...
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Page 8 Service Manual – SC8000 eneral n or ation eneral Mac ine escri tion The SC8000 is an industrial automatic rider sweeper/scrubbers with multiple sweep/scrub single pass Different models are available with front mounted side brooms (single and dual) and right side disc scrub. Service Manual ur ose an lication This Service Manual a technical resource designed to aid service personnel in maintaining and repairing the...
Page 9 Service Manual – SC8000 eneral n or ation n ine Manu acturers ec nical Manuals Engine Type Manual Name Operator’s Manual WG1605 EG523-89162ENG.pdf Diesel Kubota V1505TE Diesel Engine Operator Manual (English, French, German, Italian, Spanish) - 16622-8916-3 Kubota V1505TE Diesel Engine Service Manual (English, French, German) - ia nostic an Service ools In addition to a full set of metric and standard tools, the following items are required in order to successfully Laptop computer loaded with current version of EzParts, Adobe Reader and (preferably cellular) internet...
Page 10 Service Manual – SC8000 eneral n or ation 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.
Page 11 Service Manual – SC8000 eneral n or ation Conventions All references to right, left, front and rear in this manual are as seen from the Operator’s seat position. arts an Service (same as the Part Number) and Serial Number when discussing your machine. a e lates The Model Number and Serial Number of the machine are shown on the...
Page 12 Service Manual – SC8000 eneral n or ation an er s use to arn o i e iate a ar s t at ill cause severe ersonal in ur or eat arnin s use to call attention to a situation t at coul cause severe ersonal in ur Caution s use to call attention to a situation t at coul cause inor ersonal in ur or...
Page 13 Service Manual – SC8000 eneral n or ation en ine co art ent area Caution e sure to ollo t ese sa et recautions to avoi situations t at coul cause This machine is not approved for use on public paths or roads. endangered.
Page 14 Service Manual – SC8000 eneral n or ation rans ortin t e Mac ine body panels. Tie Down/Jacking Tie Down/Jacking Location Location...
Page 15 Service Manual – SC8000 eneral n or ation o in t e Mac ine Caution ac ine s rostatic rive ro ulsion s ste anu acture it a to valve is valve allo s t e raulic traction rive otor to en t e Engine Cover...
Page 16 Service Manual – SC8000 eneral n or ation eneral Mac ine i ensions an Ca acities Length Height Height (with overhead guard) Width/frame (roller to roller) Width (with rear squeegee) Width (with right side scrub brush) Cleaning path width (main brush only) Cleaning path width (with right side scrub brush ) Cleaning path width (dual sweep) Main brush diameter and length...
Page 17 Service Manual – SC8000 eneral n or ation verall i ensions...
Page 18: Maintenance
Service Manual – SC8000 eneral n or ation n ine an Mac ine er or ance Idle - 1200 RPM Normal Run - 2200 RPM Engine speeds Idle - 1300 RPM Normal Run - 2200 RPM Transport speed forward Transport speed reverse Grade ability –...
Page 19 Service Manual – SC8000 eneral n or ation en e Service Materials Engine Oil (refer to your engine manual) Lithium-base grease Loctite (or equivalent) thread sealant in the appropriate grades ® Never-Seez (or equivalent) anti-seize compound ® ail Maintenance art ent area Maintenance Item Procedure Check the engine oil level.
Page 20 Service Manual – SC8000 eneral n or ation Maintenance ver to 0 ours Maintenance Item Procedure Check the electrolyte level in the battery. Check the battery cables and connections. EcoFlex ™ detergent systems Purge the detergent delivery lines. Scrub deck skid plates Inspect for wear (replace if worn to ¼...
Page 21 Service Manual – SC8000 eneral n or ation Maintenance ver 00 ours Maintenance Item Procedure Inspect the complete air intake system for correct routing, kinks, restrictions, sound tight connections, holes and cracks in hoses. Hydraulic hoses Inspect for leaks, wear, cracking and kinks. Check electrolyte level;...
Page 22 Service Manual – SC8000 eneral n or ation Brake Pedal Detergent Cover Latch Steering Squeegee End Tool Fuel Tank Cover Angle Squeegee Adjustment End Tool Knob Threads Recovery on Squeegee Tank Latch Squeegee Caster Squeegee Wheel Axle Caster Wheel...
Page 23 Defect Codes A Needs Adjustment Customer________________________________________________________ B Binding Address__________________________________________________________ C Contaminated or dirty D Damaged, bent or torn M Missing W Worn out Operational Inspection Items Defect Codes Does (Circle) Check drive pedal sensor operation (to test depress drive pedal and start the engine, it should not start.) Engine starting with pedal in neutral (if it will not start check pedal calibration programming)
Page 24 Visual Inspection Items Comments Defect Codes Does 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 Scrub deck housing and door skirts Solution system pumps and solenoid valves as many as four pumps Vacuum impeller motor and hose clean screen...
Page 25 Service Manual – SC8000 eneral n or ation Visual Inspection Items Comments Defect Codes Does Scrub housing debris hopper (tray) clean Scrub housing recovery hose and pick-up screen clean Defect Codes needs adjustment dirty or contaminated missing binding damaged, bent or torn worn out ____________________________________ __________...
Page 26 Service Manual – SC8000 eneral n or ation eneral Mac ine vervie Ma or Mac ine Co onents Recovery Engine Solution Tank Cover Cover Tank Fill Cover Operator Engine Air Seat Filter Service Indicator Operator Seat Adjustment Lever Coolant Steering Wheel Tank Recovery...
Page 27 Service Manual – SC8000 eneral n or ation 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 Right Tow Valve...
Page 28 Service Manual – SC8000 eneral n or ation Control anel S itc es – sounds the Horn Switch Extended Detergent Horn horn when pressed. Scrub Switch Switch Switch Extended Scrub Switch – enables the optional Solution function. Flow Increase – enables Switch Detergent Switch and disables the detergent...
Page 29 Service Manual – SC8000 eneral n or ation – (optional) switch on the Left Right Turn Signal corresponding turn signal. Right Turn Left Turn (liquid crystal display) – displays the various machine Signal Signal status icons and informational displays. – enables the scrub, solution Scrub On/Scrub Mode Select Switch and recovery systems, and the side broom/brush system and detergent system (if the machine is so equipped).
Page 30 Service Manual – SC8000 eneral n or ation – 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 31 Service Manual – SC8000 eneral n or ation – indicate that the Left Right Turn Indicators Left Turn Right Turn Indicator Indicator – lights in conjunction with Warning Indicator the LCD to alert the Operator of a warning or fault condition. Warning Attention –...
Page 32 Service Manual – SC8000 eneral n or ation eneral is la s The LCD shows the total sweep/scrub time on the hour Hour Fuel Dilution meter, the fuel gauge, the current scrub pressure and the Meter Gauge Ratio or % system, ™...
Page 33 Service Manual – SC8000 eneral n or ation 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 34 Service Manual – SC8000 eneral n or ation Icon Condition Display Icon The Kubota 1.6L engines ECM (electronic control module) has activated an engine Engine Service fault code. See the section for more detailed diagnostic help. Low battery voltage. Check the alternator output;...
Page 35 Service Manual – SC8000 C assis S ste Ma or C assis Co onents Front Hood Rear Cover Assembly Floor Weldment Cover Support Assembly Front Floor Tank Chassis Heavy Weldment Bumper Assembly...
Page 36 Service Manual – SC8000 C assis S ste Rear Cover Rear Grille Latch Handle Latch Cover Support Weldment Heavy Bumper Weldment...
Page 37: Control System
Service Manual – SC8000 Control S ste unctional escri tion vervie 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 38 Service Manual – SC8000 Control S ste onent ocations 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 39 Service Manual – SC8000 Control S ste Control oar river o Connectors Main Control oar Connectors 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 ORN/BLK +CANbus User interface panel (membrane switches) J1-4...
Page 40 Service Manual – SC8000 Control S ste Main Control oar Connectors 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 - Output S9 side scrub lift solenoid coil J2-4 18-1...
Page 41 Service Manual – SC8000 Control S ste Main Control oar Connectors 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 M7 side broom actuator extend (red wire) J3-5 16-1 WHT/RED...
Page 42 Service Manual – SC8000 Control S ste Control oar river o ro ra tions oot e al eutral osition an ust ent Factory Default: 3% Range: 2% - 15% Whenever you change or repair the drive pedal linkage components or the hydrostatic unit, or if you replace the Rotary Sensor or Control Board (Driver Box), you will have to recalibrate the neutral deadband position and set the sensitivity as follows: Depress the foot pedal to the full reverse position, then allow the pedal to slowly return to its neutral...
Page 43 Service Manual – SC8000 Control S ste 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 44 Service Manual – SC8000 Control S ste 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 45 Service Manual – SC8000 Control S ste 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 46 Service Manual – SC8000 Control S ste...
Page 47 Service Manual – SC8000 Control S ste 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 – 10 - 30 seconds 10 to 30 seconds in 1-second increments.
Page 48 Service Manual – SC8000 Control S ste 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. Start Up State Last State Operating Mode...
Page 49 Service Manual – SC8000 Control S ste 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 CONFIGURATION MENU Press the Side Broom Up and Side Broom Down switches to scroll through the When the arrow is pointing to the desired menu item, press the green Scrub On switch to...
Page 50 Service Manual – SC8000 Control S ste 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 Not Installed Installed Side Scrub System...
Page 51 Service Manual – SC8000 Control S ste 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 52 Service Manual – SC8000 Control S ste erator resence Control The Operator Presence Control (OPC) feature that works in conjunction with the seat switch and parking When the OPC is enabled, the machine functions as follows: When the seat switch is closed (Operator in the seat): –...
Page 53 Service Manual – SC8000 Control S ste – 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. –...
Page 54 Service Manual – SC8000 Control S ste 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 05 C 2200 RPM no input @ ECM good known controller and dashboard panel.
Page 55 Service Manual – SC8000 Control S ste 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 56 Service Manual – SC8000 Control S ste 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. Control board has sensed open circuit fault for CB4 power 20A Circuit breaker CB4 over 28 C...
Page 57 Service Manual – SC8000 Control S ste S ste s isa le aults 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 current Scrub brush pressure valve...
Page 58 Service Manual – SC8000 Control S ste 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 current #1 detergent pump M10 over current #2 detergent pump M11 over current...
Page 59: Electrical System
Service Manual – SC8000 lectrical S ste unctional escri tion vervie The electrical system consists of the fuse, relay and circuit breakers not covered in the Control S ste section or the other manual sections. o er Su lies K1 POWER RELAY ON POWER RELAY FUSE 100A...
Page 60 Service Manual – SC8000 lectrical S ste onent ocations o er ela 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. K1 Power Relay Circuit rea ers...
Page 61 Service Manual – SC8000 lectrical S ste 00 a 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 rou les ootin Problem Cause Correction No power to the The 100-amp fuse Replace the fuse.
Page 62 Service Manual – SC8000 lectrical S ste 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 63 Service Manual – SC8000 lectrical S ste Component Current 0.29 Amps @ 12V K1 and K4 Relays Nominal Coil Resistance 46 ± 5 ohms Connector Callout – ela Color Type Voltage Pin Description and Function J7-1 VIO/GRA Input Module relays load power supply J7-2 BLU/PINK Output...
Page 64 Service Manual – SC8000 lectrical S ste n ut ut ut a le Nominal Voltage at Ref, Load or Supply Desig Pin Assignment Signal Connector Comments Characteristics when activated 0V (for Digital Engine Control J1-1 Input Engine Run Propane); B+ Voltage Module output (for Propane);...
Page 65 Service Manual – SC8000 lectrical S ste 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 activate horn J1-17...
Page 66 Service Manual – SC8000 lectrical S ste 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 voltage Extend Scrub Level Digital J1-33 Input Switch to ground Ground or open, closed when tank is empty Switch voltage...
Page 67 Service Manual – SC8000 lectrical S ste 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 Ground J2-15...
Page 68 Service Manual – SC8000 lectrical S ste 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 @12V Incandescent...
Page 69 Service Manual – SC8000 lectrical S ste 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 Circuit Breaker2 J3-14...
Page 70 Service Manual – SC8000 lectrical S ste S o Measure ents river o 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. Nominal Voltage at Real World...
Page 71 Service Manual – SC8000 lectrical S ste 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 J1-16 RED/BLK Horn Switch Switch to ground...
Page 72 Service Manual – SC8000 lectrical S ste 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 Module low side Temp voltage...
Page 73 Service Manual – SC8000 lectrical S ste 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 Solenoid driver...
Page 74 Service Manual – SC8000 lectrical S ste 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 J2-24 ORN/RED 0 - 12V @12V...
Page 75 Service Manual – SC8000 lectrical S ste 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 Pump 0 - 12V FLA @ 12V, 46 LRA...
Page 76 Service Manual – SC8000 lectrical S ste 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) (VACC2) Circuit Breaker 2...
Page 77 Service Manual – SC8000 lectrical S ste S o Measure ents 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 78 Service Manual – SC8000 lectrical S ste irin ia ra 08 8 S eet u ota n ine RED/VIO RED/VIO CIRCUIT BREAKER, 20A. FUSE, 100 A. 12 VDC RELAY, POWER GRN/BRN RED/VIO CIRCUIT BREAKER, 15 A. CIRCUIT BREAKER, 10A. ENGINE SYSTEM RED/VIO REFERENCE: STARTER B+...
Page 79 Service Manual – SC8000 lectrical S ste irin ia ra 08 8 S eet u ota iesel n ine CB11 RED/VIO RED/VIO CIRCUIT BREAKER, 20A. FUSE, 100 A. 12 VDC RELAY, POWER RELAY, GLOW PLUG GRN/BRN RED/VIO CIRCUIT BREAKER, 15 A. CIRCUIT BREAKER, 10A.
Page 80 Service Manual – SC8000 lectrical S ste irin ia ra u ota n ine...
Page 81 Service Manual – SC8000 lectrical S ste irin arness Sc e atic Mac ine 08 8 S eet 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 RED/WHT 18-1 ORN/BLK 20-1 VIO/YEL 18-1...
Page 82 Service Manual – SC8000 lectrical S ste irin arness Sc e atic n ine nter ace an u ota iesel 08 8 S eet RED 1-1 KUBOTA ENGINE SYSTEM RED 6-2 REFERENCE: 56107659 DIAGRAM-WIRING KUBOTA LP STARTER X10.1 ENGINE GROUND GASOLINE SENSOR X78.
Page 83 Service Manual – SC8000 n ine S ste iesel unctional escri tion vervie 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.
Page 84 Service Manual – SC8000 n ine S ste iesel Circuit escri tion 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 85 Service Manual – SC8000 n ine S ste iesel onent ocations Oil Pressure Sensor Engine Ground Connection Coolant Temperature Sensor 1 and 2 Electrical Connectors Governor Engine Speed Woodward Governor and Magnetic Pickup Throttle Actuator...
Page 86 Service Manual – SC8000 n ine S ste iesel Maintenance an ust ents arnin e ore er or in an ac ine aintenance or a ust ents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e n ine...
Page 87 Service Manual – SC8000 n ine S ste iesel e lacin n ine 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 Note that there are several types of Cooling System Tools.
Page 88 Service Manual – SC8000 n ine S ste iesel n ine ir ilter Maintenance Check the Engine Air Filter Service Indicator enterin t e en ine ust can severel a a e t e en ine be cleaned twice before being replaced. attempt to clean the inner safety element.
Page 89 Service Manual – SC8000 n ine S ste iesel 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. Check for air trapped in the cooling system.
Page 90 Service Manual – SC8000 n ine S ste iesel iesel n ine ill ot un at i S ee or ur o S ee 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 91 Service Manual – SC8000 n ine S ste iesel rou les ootin t e u ota n ine S ee overnin S ste found on their website. To check the electrical control circuit: value is 12 VDC. Press the engine speed selection button (located on the operator control panel) with engine cranking/ running and test for 12 VDC at the governor speed select inputs 1 and 2.
Page 92 Service Manual – SC8000 n ine S ste iesel 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 1-3-4-2 Injection Timing 19 degrees before TDC...
Page 93 Service Manual – SC8000 n ine S ste iesel Connector Callout – ela 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 Engine start inhibit signal J7-4 Input...
Page 94 Service Manual – SC8000 n ine S ste unctional escri tion The LPG SC8000 machines use a four-cylinder 1.6L Kubota WG1605-L-E3 engine that is liquid cooled and and naturally aspirated 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.
Page 95 Service Manual – SC8000 n ine S ste n ine Start an un Circuit escri tion pedal is in the neutral position. ENGINE START/RUN RELAY PCB J7 Requirements: 1. First turn the S1 Key Switch to “Start” position, then released to it’s “Run” position. 2.
Page 96 Service Manual – SC8000 n ine S ste Note that if the sends a signal from to the Driver Box START INHIBIT J1-22 K3 RELA CONTROL SWITCH to open the switch, no ground will be provided to the relay coil , the contacts will not close START...
Page 97 Service Manual – SC8000 n ine S ste onent ocations lectrical Co onents Note: Some of the photos in this section are of an engine before it is installed in the machine for better visual The following components are included in this section: Alternator Ignition Coils Cam Position Sensor...
Page 98 Service Manual – SC8000 n ine S ste...
Page 99 Service Manual – SC8000 n ine S ste i ure i ure ront 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 i ure en Sensors Fuel Lockoff Solenoid LP Dual Stage...
Page 100 Service Manual – SC8000 n ine S ste Maintenance an ust ents arnin 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 Sc e ule Item Service Interval...
Page 101 Service Manual – SC8000 n ine S ste Item Service Interval Every Every Every Every Every Every Every Every 8 hrs 50 hrs 100 hrs 200 hrs 1000 hrs 2000 hrs Year (daily). (weekly) Years Check LPG vaporizer Replace radiator hoses and clamp bands Change radiator coolant Replace battery...
Page 102 Service Manual – SC8000 n ine S ste e lacin n ine 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 Note that there are several types of Cooling System Tools.
Page 103 Service Manual – SC8000 n ine S ste n ine ir ilter Maintenance Caution rou les ootin WG1605 9Y110-01760.pdf for the diagnostic tool connection procedure. WG1605 engine along with the correlating password. The software, password and installation instructions SW8000 engine application which are covered here in this manual section such as, engine speed control and engine starter operation.
Page 104 Service Manual – SC8000 n ine S ste 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 105 Service Manual – SC8000 n ine S ste 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.) Cylinder Head Overhead-Valve Ignition System Full Transistor Battery Ignition Type Governor...
Page 106 Service Manual – SC8000 n ine S ste S o Measure ents The following information was gathered by measuring one machine. While the values recorded cannot serve comparison. n ine acuu uel ressure nition ut ut Sensor an Cran Sensor scillosco e attern...
Page 107 Service Manual – SC8000 n ine S ste S ecial ools 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 and a new password must be downloaded from Customer Zone to use on the Kubota engine.
Page 108: Hydraulic System
Service Manual – SC8000 raulic S ste unctional escri tion vervie 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 109 Service Manual – SC8000 raulic S ste lectrical Sc e atic 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 Driver Box J2-5...
Page 110 Service Manual – SC8000 raulic S ste raulic Sc e atic...
Page 111 Service Manual – SC8000 raulic S ste onent ocations Ma or Co onents 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 Filter...
Page 112 Service Manual – SC8000 raulic S ste raulic C lin ers Squeegee Cylinder Steer Assembly Steer Cylinder Cylinder Assembly Scrub Lift Assembly Cylinder Assembly located as shown. Squeegee Cylinder Assembly Scrub Lift Cylinder Assembly raulic Motors Vacuum Fan Motor Vacuum Steering Assembly Steering Pump...
Page 113 Service Manual – SC8000 raulic S ste raulic u 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 Piston Pump Assembly Accessory Pump Assembly...
Page 114 Service Manual – SC8000 raulic S ste Solenoid Valves System Relief Valves located on the Hydraulic Valve Block/Manifold shown. S2 top S3 bottom...
Page 115 Service Manual – SC8000 raulic S ste 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 116 Service Manual – SC8000 raulic S ste raulic Mani ol l Co onent ocation e 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 L3/S3 Solenoid coil and valve cartridge, squeegee lift cylinder UP (bottom), coil 8 ohms L4/S4...
Page 117 Service Manual – SC8000 raulic S ste Maintenance an ust ents arnin e ore er or in an ac ine aintenance or a ust ents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e raulic...
Page 118 Service Manual – SC8000 raulic S ste rou les ootin eneral rou les ootin Problem Cause Correction Fault code 34 Hydraulic temperature fault that sets when displayed on the hydraulic oil temperature exceeds 220 F for hydraulic oil cooler to ensure 15 seconds.
Page 119 Service Manual – SC8000 raulic S ste 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 individual system sections of this manual for additional information.
Page 120 Service Manual – SC8000 raulic S ste Component 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 3000 PSI max. Forward 3500 PSI Relief Setting...
Page 121 Service Manual – SC8000 raulic S ste Displacement Relief Accessory Pump 2a Circuits Cu. In. Accessory Pump 2a non-priority branch, engine @ 1.20 8.42 2200 2700 2200 RPM, no systems running (test port TP2) Main scrub brush motors (only) setting (A) no load A 850 1700 port TP1)
Page 122 Service Manual – SC8000 raulic S ste 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 Scrub Brush Pressure Setting Scrub Brush Pressure Setting Scrub Brush Pressure Setting...
Page 123 Service Manual – SC8000 raulic S ste S ecial ools Hydraulic test gauge w/connector, 3000 psi range, p/n 56504516...
Page 124 Service Manual – SC8000 tions an ccessories 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 125 Service Manual – SC8000 tions an ccessories 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 126 Service Manual – SC8000 tions an ccessories 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) Overhead Guard Kit (warning beacon sold separately)
Page 127 Service Manual – SC8000 tions an ccessories Description Illustration Overhead Guard Canopy Kit (overhead guard sold separately) Rear Bumper Kit Recovery Tank Clean-out Kit Recovery Tank Debris Tray Kit...
Page 128 Service Manual – SC8000 tions an ccessories Description Illustration Drain Hose Extension Remote Foot-actuated Horn Switch Kit Right-hand/Dual Armrest Kit Seat Belt Kit for Standard Seat...
Page 129 Service Manual – SC8000 tions an ccessories 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 130 Service Manual – SC8000 ecover S ste unctional escri tion S ste vervie Refer to the S uee ee S ste ecover S ste irin ia ra Battery 12 VDC Fuse, 100A Relay, Power Circuit Breaker, 15A Circuit Breaker, 10A Switch, Ignition J1-12 Ignition_KeyPos...
Page 131 Service Manual – SC8000 ecover S ste lectrical Circuit escri tion Driver Box Dashboard Panel Driver Box Drive Pedal Sensor R1 Recovery Full Switch S2 ecover S ste raulic ia ra Vac Fan Control Valve Solenoid acuu Vacuum Fan S1 Vac Fan Control Valve Vacuum Fan Control Valve Solenoid Off Pump...
Page 132 Service Manual – SC8000 ecover S ste acuu Solenoid Vacuum Fan S1 Vacuum Fan Control Valve S1 Vac Fan Control Valve Solenoid On Pump through the Vacuum Fan Reservoir Pressure Relief Valve Pressure Relief Propulsion Valve Pump Charge Port Aux. Pump Return through Filter to Propulsion Pump...
Page 133 Service Manual – SC8000 ecover S ste onent ocations ecover is on Recovery Tank Cuffed Hose Vacuum Fan Assembly Assembly Recovery Vacuum Fan Assembly Tank Vacuum Cover Hose Assembly Vacuum Fan Assembly Vacuum Hose Recovery Tank Recovery Tank Squeegee Hose Assembly Cuffed Hose Assembly Recovery Tank Recovery Tank Cover...
Page 134 Service Manual – SC8000 ecover S ste ail Maintenance arnin e ore er or in an ac ine aintenance a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e rou les ootin Problem...
Page 135 Service Manual – SC8000 ecover S ste e oval an nstallation arnin e ore re ovin or reinstallin an ac ine co onents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e ecover Caution...
Page 136 Service Manual – SC8000 ecover S ste Unhook the from the Cable Assembly Recovery Tank Recovery Tank Recovery Tank Cable Assembly Note: When you reinstall the , set the onto the two on the frame, ecover Mountin then tilt the up and reattach the Ca le sse Front...
Page 137 Service Manual – SC8000 ecover S ste Component 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 O @ 2200 RPM Current 1.5 Amps Vacuum Fan Solenoid Valve...
Page 138 Service Manual – SC8000 Scru S ste C lin rical unctional escri tion vervie 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. The dual-displacement, low-speed (accessory) pump (1.20 CID) powers the two scrub brush motors and the hydraulic scrub lift cylinder.
Page 139 Service Manual – SC8000 Scru S ste C lin rical Scru rus Motors For the scrub brush motors to run: must receive a signal from the that the drive pedal has been moved Driver Box Drive Pedal Sensor R1 from the neutral position. must provide a ground at pin to energize the solenoid valve...
Page 140 Service Manual – SC8000 Scru S ste C lin rical C lin rical Scru S ste raulic ia ra s Scru Motors Scrub Brush When the scrub motors are off, the Motors (1.20 CID) sends Accessory Pump oil to the which Priority Flow Divider Cooler...
Page 141 Service Manual – SC8000 Scru S ste C lin rical Scru i t C lin er n ine S ut When the engine is shut Scrub Lift off, the de-energized Cylinder Scrub valve Cylinder Lock L6 Scrub holds the oil pressure Cylinder Lock L6 from the bottom port on...
Page 142 Service Manual – SC8000 Scru S ste C lin rical Scru i t C lin er n ine unnin 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 Steering Unit...
Page 143 Service Manual – SC8000 Scru S ste C lin rical onent ocations 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 raises and lowers Assembly the scrub deck.
Page 144 Service Manual – SC8000 Scru S ste C lin rical rou les ootin eneral rou les ootin 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 downward, the code 01 displayed)
Page 145 Service Manual – SC8000 Scru S ste C lin rical Problem Cause Correction Scrub deck The scrub deck pressures pressures will not are set incorrectly in the (Refer to the Control S ste Control oar change; inoperative river o ro ra tions ser tions in its three settings...
Page 146 Service Manual – SC8000 Scru S ste C lin rical Main Scru ec an t Si e Scru The following conditions must be met for the Main Scrub Deck to move to the scrub (down) position: must be on. Key Switch The engine must be running.
Page 147 Service Manual – SC8000 Scru S ste C lin rical Main Scru ec an t Si e Scru ressure The following conditions must be met for the Main Scrub Deck to apply the selected downward scrub pressure: must be on. Key Switch The engine must be running.
Page 148 Service Manual – SC8000 Scru S ste C lin rical Main Scru an Si e S ee Scru The following conditions must be met for the Main Scrub Deck motors to run: must be on. Key Switch The engine must be running. The scrub on mode must be selected on the Dashboard Panel The drive pedal must be activated (moved from the neutral position).
Page 149 Service Manual – SC8000 Scru S ste C lin rical Component Scrub Brush Solenoid Valve Scrub Pressure Proportional Down Solenoid Valve L5 Scrub Cylinder Lock Scrub Pressure Proportional Up Solenoid Valve L7 Main Broom Motors Scru ressures Scrub Hydraulic Proportioning Pressure Valve Solenoid Coil Pressure...
Page 150 Service Manual – SC8000 Scru S ste C lin rical S ecial ools...
Page 151 Service Manual – SC8000 Scru S ste t Si e unctional escri tion vervie 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 152 Service Manual – SC8000 Scru S ste t Si e t Si e Scru rus Motor For the right side scrub brush motor to run: must receive a signal from the that the drive pedal has been moved Driver Box Drive Pedal Sensor R1 from the neutral position.
Page 153 Service Manual – SC8000 Scru S ste t Si e Si e Scru Motor 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 154 Service Manual – SC8000 Scru S ste t Si e Si e Scru i t C lin er 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 Lift Valve L9 is de-energized to direct the...
Page 155 Service Manual – SC8000 Scru S ste t Si e 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 controls the side scrub lift Valve S9/L9 cylinder.
Page 156 Service Manual – SC8000 Scru S ste t Si e Maintenance an ust ents arnin e ore er or in an ac ine aintenance or a ust ents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e Si e rus...
Page 157 Service Manual – SC8000 Scru S ste t Si e rou les ootin eneral rou les ootin 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 Control S ste downward, the side...
Page 158 Service Manual – SC8000 Scru S ste t Si e Main Scru ec an t Si e Scru The following conditions must be met for the Right Side Scrub Brush to move to the scrub (down) position: must be on. Key Switch The engine must be running.
Page 159 Service Manual – SC8000 Scru S ste t Si e Main Scru an Si e S ee Scru The following conditions must be met for the Right Side Scrub Brush motor to run: must be on. Key Switch The engine must be running. The scrub on mode and side broom/scrub must be selected on the Dashboard Panel The drive pedal must be activated (moved from the neutral position).
Page 160 Service Manual – SC8000 Scru S ste t Si e Component Right Side Scrub Motor S ecial ools...
Page 161 Service Manual – SC8000 Solution S ste unctional escri tion vervie The solution system delivers water, or detergent and water, to system. The standard , solution- Solution Tank Solution Solution Solution Pump Tank Shutoff Valve Solution Filter (M4), Solution Pump Main Solution Solenoid Valve Main...
Page 162 Service Manual – SC8000 Solution S ste eter ent S ste The AXP ™ detergent ™ systems use dual diaphragm Detergent Main (M10 and M11) to Pumps Solution pump detergent into the Solenoid Valve Main Solution Solenoid (L10). Two Valve Detergent Tee 1 are used to ensure...
Page 163 Service Manual – SC8000 Solution S ste ten e Scru S ste the optional extended Float Solution Switch Tank uick- disconnect Recovery Tank Solution Solution uick- Pump system uses an additional disconnect Coupler (M6) Extended Scrub Pump Tee 1 Recovery Note that the extended Tank when the solution tank is...
Page 164 Service Manual – SC8000 Solution S ste t Si e Scru with the optional Right Side , the solution is Scrub Brush system to the Right Solution (L11). The Solenoid Valve Right Solution Solenoid opens along with the Valve Right Main Solution Solenoid Valve Solution Solenoid...
Page 165 Service Manual – SC8000 Solution S ste ust uar S ra o les The DustGuard system ™ uses a separate Mist Pump Mist (M5) to pump solution Mist Spray to the Pump Nozzles Mist Spray Nozzles Mist Pump Mist Pump when the solution tank Solution S ste irin...
Page 166 Service Manual – SC8000 Solution S ste Circuit escri tions Main Solution S ste Solution Pump M4 Main Solution Solenoid Valve L10 that on the Driver Box to the J3-2 Solution Pump M4 via the CAN Bus that the Operator has Driver Box Dashboard Panel Driver Box...
Page 167 Service Manual – SC8000 Solution S ste eter ent S ste on the Driver Box. Note Detergent Pumps M10 J3-19 J3-20 J3-21 J3-22 that the voltage to the Detergent Pumps pump. Detergent Pump Detergent Pump detergent ratio. Detergent Pumps via the CAN Bus that the Operator has Driver Box Dashboard Panel Driver Box...
Page 168 Service Manual – SC8000 Solution S ste ten e Scru S ste Extended Scrub Pump M6 mode, the USE CLEAN FIRST Solution Empty Switch S3 solution tank is empty). Extended Scrub Float Switch S7 via the CAN Bus that the Operator has Driver Box Dashboard Panel Driver Box...
Page 169 Service Manual – SC8000 Solution S ste t Si e Scru to the optional right Right Solution Solenoid Valve L11 Solution Pump M4 via the CAN Bus that the Operator has Driver Box Dashboard Panel Driver Box Drive Pedal Sensor R1 Battery Circuit Breaker, 20A Fuse, 100A...
Page 170 Service Manual – SC8000 Solution S ste ose S ste when the wash hose Wand Pump M8 Wand Pump Wand Battery Fuse, 100A 12 VDC Relay, Power Circuit Breaker, 15A Circuit Breaker, 20A Switch, Ignition Driver Box Pressure Switch J3-23 Bat - J1-12 Ignition_KeyPos...
Page 171 Service Manual – SC8000 Solution S ste ust uar S ste pumps solution to the two DustGuard ™ Mist Pump M5 Mist Pump The DustGuard ™ via the CAN Bus that the Operator has Driver Box Dashboard Panel Driver Box Drive Pedal Sensor R1 Battery Fuse, 100A...
Page 172 Service Manual – SC8000 Solution S ste onent ocations Extended Scrub Pump M6 Extended Scrub Float Switch S7 Recovery Tank Full Switch S2...
Page 173 Service Manual – SC8000 Solution S ste Mist Pump M5 and Solution Pump M4 top Detergent Pumps M10 and M11 Solution Filter Wand Pump M8 bottom behind cover panel...
Page 174 Service Manual – SC8000 Solution S ste Maintenance an ust ents arnin e ore er or in an ac ine aintenance or a ust ents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e o Clean t e Solution ilter Screen...
Page 175 Service Manual – SC8000 Solution S ste o Clean t e ten e Scru S ste Strainer pressure. o Clean t e Solution eliver o Clean t e ust uar S ra o les Note: hoses. Hold the with a Plastic Nozzle Adapter 7/8 Wrench when...
Page 176 Service Manual – SC8000 Solution S ste , make sure the is holding the Plastic Nozzle Adapter Brass Nozzle Adapter Plastic . Tighten the to the Nozzle Adapter Spray Nozzle Bracket Brass Nozzle Adapter Plastic Nozzle Adapter eter ent S ste Maintenance Service Note: o ur e...
Page 177 Service Manual – SC8000 Solution S ste o ur e ee l t e scru s ste ust e o Purge Icon Note: The eter ent o eter ent evel ie in Slots Dry Break . When eter ent Cartri Cap and Insert eter ent evel ie in...
Page 178 Service Manual – SC8000 Solution S ste o C an e t e eter ent Mi atio t e scru s ste ust e on Detergent Ratio in the displayed ratio. The detergent system will Note: ™ ™ is on. section.
Page 179 Service Manual – SC8000 Solution S ste rou les ootin eneral rou les ootin 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.
Page 180 Service Manual – SC8000 Solution S ste 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 the extended scrub mode Solution pump(s) over Check the M6 extended scrub pump wiring for current (fault code 00 problems;...
Page 181 Service Manual – SC8000 Solution S ste Problem Cause Correction The detergent system not the solution system menu. menu. The detergent supply lines Check the detergent lines and clean/replace as are clogged. necessary. The detergent cartridge is empty. insert into a full cartridge. No voltage to the detergent 1.
Page 182 Service Manual – SC8000 Solution S ste Main an t Si e Solution alves an Solution u Main Right Side Solution Valves Main Solution Pump Key Switch MAIN & RIGHT SIDE SCRUB BRUSH SOLUTION VALVES & PUMP Dashboard Panel RED/VIO B+ from K1 Power Relay neutral position).
Page 183 Service Manual – SC8000 Solution S ste Component 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 12 VDC Coil Power Main Solution Solenoid Valve L10 Current 1.5 amps Nominal Coil Resistance...
Page 184 Service Manual – SC8000 Solution S ste Solution an eter ent eliver ates Setting 1 1.6 gal/min 6 L/min Setting 2 1.9 gal/min 7.2 L/min Setting 3 2.3 gal/min 8.7 L/min Setting 4 2.7 gal/min 10.2 L/min Setting 5 3.1 gal/min 11.7 L/min Available dilution ratios: 03 , .04 , .05 , .07 , .08 , 1.0 , 1.5 , ™...
Page 185: Squeegee System
Service Manual – SC8000 S uee ee S ste unctional escri tion vervie The squeegee system includes the squeegee assembly, squeegee mounting assembly, squeegee lift weldment and the squeegee lift cylinder. Two squeegee blades (front and rear) pick up the water and direct it into the vacuum hose which carries it to the recovery tank.
Page 186 Service Manual – SC8000 S uee ee S ste S uee ee S ste raulic ia ra s S uee ee o n Squeegee When the main scrub or recovery system is Lift Cylinder actuated, the Squeegee Down Solenoid Valve L2 Squeegee energizes to direct the oil to the top port on the Down...
Page 187 Service Manual – SC8000 S uee ee S ste S uee ee oc e When the squeegee is up (retracted), both Squeegee Lift Cylinder Squeegee Down Solenoid Valve L2 Squeegee Up Solenoid Valve L3 and lock the Squeegee Lift Cylinder squeegee in the up position.
Page 188 Service Manual – SC8000 S uee ee S ste onent ocations 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 and raises and lowers the Squeegee Lift Weldment...
Page 189 Service Manual – SC8000 S uee ee S ste 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 Valve S2 top...
Page 190 Service Manual – SC8000 S uee ee S ste acuu n an S uee ee o n The following conditions must be met for the Vacuum Fan to run and for the squeegee to be lowered to the pick-up position: must be on.
Page 191 Service Manual – SC8000 S uee ee S ste acuu an S uee ee The following conditions must be met for the Vacuum Fan to shut off and for the squeegee to be raised to the travel position: must be on. Key Switch The engine must be running.
Page 192 Service Manual – SC8000 S uee ee S ste Component 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 193: Steering System
Service Manual – SC8000 Steerin S ste unctional escri tion vervie 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 Steer Rack Spur .
Page 194 Service Manual – SC8000 Steerin S ste raulic ia ra s Steerin S ste in Motion When the engine is running and the Operator turns the steering wheel, sends Auxiliary Pump oil through the Priority Flow to the Steering Divider Steering Unit Unit directs...
Page 195 Service Manual – SC8000 Steerin S ste Steerin S ste Stationar When the steering wheel is Steering through the Steering Unit Unit Metering Valve Steer Cylinder Metering Valve Check Valve Steer Priority Cylinder Flow Divider Auxiliary Pump Reservoir onent ocations Steerin is driven by the Steering Unit...
Page 196 Service Manual – SC8000 Steerin S ste Steer C lin er is mounted Steer Cylinder horizontally and drives the rack Steer Cylinder and spur gear connected to the drive wheel assembly Steer Cylinder...
Page 197 Service Manual – SC8000 Steerin S ste rou les ootin 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 or jerky .
Page 198 Service Manual – SC8000 S ee S ste Si e roo unctional escri tion vervie The side broom sweep system is available with either with a single left-hand side broom (with right side nozzles to spray solution in ™ front of the broom(s) to minimize dust. The side broom hydraulic motors are powered by the oil from the discharge side of the two main scrub brush The side broom(s) use an electric lift actuator to raise and lower the broom(s).
Page 199 Service Manual – SC8000 S ee S ste Si e roo Si e roo Motor s For the side broom motor(s) to run: must receive a signal from the that the drive pedal has been moved Driver Box Drive Pedal Sensor R1 from the neutral position.
Page 200 Service Manual – SC8000 S ee S ste Si e roo Si e roo Motor s 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 energized to direct the oil from the discharge side of the Cylindrical...
Page 201 Service Manual – SC8000 S ee S ste Si e roo onent ocations Mist Sin le le t an S ee 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.
Page 202 Service Manual – SC8000 S ee S ste Si e roo ual S ee 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.
Page 203 Service Manual – SC8000 S ee S ste Si e roo 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 an ust ents arnin e ore er or in an ac ine aintenance or a ust ents...
Page 204 Service Manual – SC8000 S ee S ste Si e roo 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 205 Service Manual – SC8000 S ee S ste Si e roo rou les ootin eneral rou les ootin 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).
Page 206 Service Manual – SC8000 S ee S ste Si e roo Main Scru an Si e S ee Scru The following conditions must be met for the Side Sweep Broom motor(s) to run: must be on. Key Switch The engine must be running. The scrub on mode and side broom/scrub must be selected on the Dashboard Panel The drive pedal must be activated (moved from the neutral position).
Page 207 Service Manual – SC8000 S ee S ste Si e roo Component 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 17.9 Cu. In. Per Revolution Side Broom Motor Rotation - Clockwise (as viewed from shaft end) Pressure Port - A...
Page 208 Service Manual – SC8000 eel S ste on traction unctional escri tion 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 - Hex Screw...
Page 209 Service Manual – SC8000 eel S ste on traction Maintenance an ust ents arnin e ore er or in an ac ine aintenance or a ust ents a e sure t e e s itc is o an t e e is re ove ac ine ra e ension ust ent...
Page 210 Service Manual – SC8000 eel S ste on traction rou les ootin 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 211 Service Manual – SC8000 eel S ste raction unctional escri tion vervie 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 Piston Lever...
Page 212 Service Manual – SC8000 eel S ste raction raction rive 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 Traction Drive Motor to rotate freely when Front Wheel...
Page 213 Service Manual – SC8000 eel S ste raction lectrical Circuit escri tion 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. Once the engine is running, the must read a voltage through indicating that the...
Page 214 Service Manual – SC8000 eel S ste raction raction rive Motor in or ar or everse 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 215 Service Manual – SC8000 eel S ste raction onent ocations iston u ro ac otar 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 Piston Pump (called the Rotary Sensor...
Page 216 Service Manual – SC8000 eel S ste raction Maintenance an ust ents arnin e ore er or in an ac ine aintenance or a ust ents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e oot e al...
Page 217 Service Manual – SC8000 eel S ste raction 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 raulic S ste speeds. 13. Turn the engine off, then see if it will restart. If engine will not start, the is probably out Rotary Sensor of its neutral (deadband) range and needs to be recalibrated.
Page 218 Service Manual – SC8000 eel S ste raction 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. Increasing the percentage range will decrease the pedal neutral position sensitivity, but will increase the pedal travel required to start the scrub functions.
Page 219 Service Manual – SC8000 eel S ste raction e oval an nstallation arnin e ore re ovin or reinstallin an ac ine co onents a e sure t e e s itc is o t e e is re ove ac ine an t e ar in ra e is en a e ull Control Ca le e lace ent...
Page 220 Service Manual – SC8000 eel S ste raction Service Note: To thread the new from the foot pedal assembly to the ull Control Ca le Hydroback, we recommend that you SECURELY attach the new to the old Ca le , then carefully pull the new through the old routing path in the Ca le...
Page 221 Service Manual – SC8000 eel S ste raction ro ac e lace ent 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 222 Service Manual – SC8000 eel S ste raction raction rive Motor ose outin 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 Hydraulic Hoses Hydraulic Hoses surrounding components.
Page 223 Service Manual – SC8000 eel S ste raction Component 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 1.44 CIR Speed...
Page 224 Service Manual – SC8000 eel S ste raction Description Steering Torque to 40 ft.- Steering Castle Castle lb.,then loosen to Spindle Nut (Spindle) Nut align cotter pin. -16 Hex Torque to 150 ft.-lb. Jam Nut -20 x 1.25 Use Loctite 242, Hex Screw torque to 90 ft.-lb.

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Nilfisk-Advance 56108110 SC8000 48 LPG Service Manual

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Service Manual

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Summary of Contents for Nilfisk-Advance 56108110 SC8000 48 LPG

Page 1: Service Manual

Page 18: Maintenance

Page 37: Control System

Page 59: Electrical System

Page 108: Hydraulic System

Page 185: Squeegee System

Page 193: Steering System

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