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Michco sc8000, Service Manual

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Michco sc8000 Service Manual Download Page 108

Engine System, LPG 107

Service Manual – SC8000 

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..

Cooling System Tool

CD containing Kubota Engine Software p/n 56107764

Not Shown

 

Summary of Contents for sc8000

Page 1: ...an 48906 Fax 517 484 9836 Email CustServe Michco com Web site www Michco Com Parts Web site www FloorMachineParts Com Order Parts on Line at www FloorMachineParts Com Directly to Parts Service By Emai...

Page 2: ...EX 56108114 SC8000 60 LPG 56108115 SC8000 60 LPG ECOFLEX 56108116 SC8000 60 D 56108117 SC8000 60 D ECOFLEX 56108118 SC8000 62 LPG 56108119 SC8000 62 LPG ECOFLEX 56108120 SC8000 62 D 56108121 SC8000 62...

Page 3: ...rall Dimensions 17 Engine and Machine Performance 18 Fastener Torque Specifications 18 Maintenance 18 Maintenance Schedule 18 Recommended Service Materials 19 Daily Maintenance 19 Maintenance Every 15...

Page 4: ...Specifications 63 Component Specifications 63 Connector Callout Relay PCB 63 Input Output Table 64 Shop Measurements Driver Box 70 Shop Measurements Relay PCB 77 Wiring Diagram 56108185 Rev A Sheet 1...

Page 5: ...nance Schedule 100 Engine Oil 101 Engine Coolant 101 Engine Air Filter Maintenance 103 Troubleshooting 103 General Troubleshooting 103 Engine Overheating Problems 104 Shop Measurements 106 Special Too...

Page 6: ...g 144 General Troubleshooting 144 Main Scrub Deck and Right Side Scrub Down 146 Main Scrub Deck and Right Side Scrub Pressure 147 Main Scrub and Side Sweep Scrub On 148 Specifications 149 General Spec...

Page 7: ...Specifications 183 Solution and Detergent Delivery Rates 184 Squeegee System 185 Functional Description 185 Overview 185 Squeegee System Wiring Diagram 185 Circuit Description 185 Squeegee System Hydr...

Page 8: ...211 Overview 211 Piston Pump 211 Foot Pedal Hydroback and Rotary Sensor 211 Traction Drive Motor 212 Electrical Schematic 212 Electrical Circuit Description 213 Hydraulic Diagrams 213 Component Locat...

Page 9: ...sion History Revision Date Description 8 14 Electrical System Wiring Diagram 56108185 Rev A Sheet 2 right side of image was cut off Repaired image to show the complete diagram Engine System LPG Clarif...

Page 10: ...man Italian Spanish 16622 8916 3 Kubota V1505TE Diesel Engine Service Manual English French German 97897 01640 Kubota V1505TE Diesel Engine Service Manual English 97897 02432 Diagnostic and Service To...

Page 11: ...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 Hydra...

Page 12: ...ginal replacement parts and accessories Call the Nilfisk Advance Dealer named below for repair parts or service Please specify the Model Number same as the Part Number and Serial Number when discussin...

Page 13: ...d down hills Clean only while ascending driving up the ramp Keep sparks flame and smoking materials away from the battery Explosive gases are vented during normal operation Charging the battery produc...

Page 14: ...not leave the machine unattended without first turning the Key Switch off O removing the key and securing the machine Apply the parking brake before exiting the Operator s seat Turn the Key Switch of...

Page 15: ...ransporting the Machine Caution Before transporting the machine on an open truck or trailer make sure the machine is tied down securely at the designated Tie Down Jacking Locations shown below all acc...

Page 16: ...e machine Note that if the tow valve is left in the freewheeling position Tow Valve Lever pulled OUT the hydrostatic pump can t efficiently propel the machine in forward or reverse Attempting to opera...

Page 17: ...4 cm Main brush diameter and length 11 in x 48 in 27 9 cm x 121 9 cm Side scrub brush right 16 in 40 6 cm Side broom sweep 20 in 50 8 cm Solution tank capacity 3 inches from top 100 gal 378L Recovery...

Page 18: ...General Information 17 Service Manual SC8000 Overall Dimensions...

Page 19: ...b M5 61 in lb 36 in lb M6 9 ft lb 62 in lb M8 22 ft lb 13 ft lb M10 44 ft lb 25 ft lb M12 70 ft lb 40 ft lb Maintenance Maintenance Schedule Keep the machine in top condition by closely following the...

Page 20: ...nd coolant leaks Check the air cleaner service indicator and service the air filter when the indictor is shown red Operator control panel Check for a hydraulic filter plugged icon on the operator pane...

Page 21: ...small amount of grease into each grease fitting on the machine until grease seeps out around the bearings Steering Rack Apply grease to lubricate Angle adjustment knob threads on the squeegee mount S...

Page 22: ...mp Maintenance Every 800 to 1000 Hours Maintenance Item Procedure Radiator Flush and refill radiator with 50 50 mix of water and antifreeze Hydraulic oil reservoir Change the reservoir oil and filter...

Page 23: ...eads on Squeegee Mount grease Steering Rack grease Squeegee End Tool Wheel oil Squeegee End Tool Wheel oil Recovery Tank Latch oil Fuel Tank Cover Latch oil Brake Pedal parking brake Linkage oil Deter...

Page 24: ...ce max Fwd 8 mph Noisy sluggish 8 Brakes A B W 9 Steering excessive play 10 Right side scrub brush raise lower model option if equipped B D L 11 Right side scrub brush on off must have main scrub turn...

Page 25: ...rub deck B L 39 Battery clean and water C 40 Engine oil level hoses and belts C D L 41 Engine air cleaner element inner and outer check service indicator C L 42 Engine coolant level fill at reservoir...

Page 26: ...ck up screen back flush clean C 63 Dust guard spray nozzles and strainers clean C L W Defect Codes A needs adjustment C dirty or contaminated M missing B binding D damaged bent or torn W worn out L le...

Page 27: ...oolant Overflow Tank Engine Air Filter Engine Cover Latch Recovery Tank Drain Hose Recovery Tank Tilt out Latch Recovery Tank Tilt out Grip Left Side Skirt Double Scrub Skirt Holder Left Side Skirt La...

Page 28: ...Parking Brake Drive Pedal Direction Speed Steering Wheel Tilt Adjust Lever Right Side Skirt Latch Tow Valve Lever Battery Solution Filter Squeegee Assembly Engine Oil Dipstick Engine Oil Filter Soluti...

Page 29: ...e to the next highest scrub pressure Increases the solution flow to the next highest flow rate and Increases the detergent ratio to the next highest concentration The EcoFlex indicator will blink and...

Page 30: ...e is so equipped Side Broom Up Adjust Switch raises the side broom s Side Broom Scrub On Off Switch enables and disables the side broom s and or right side scrub system Note that when the side broom s...

Page 31: ...in idle override the automatic idle feature will be temporarily disabled until the next time the foot pedal is moved from the neutral position This can be useful during troubleshooting or if you want...

Page 32: ...indicates that the side broom brush system is enabled Emergency Flasher Indicator indicates that the emergency flashers are switched on Headlight Indicator indicates that the headlights are switched o...

Page 33: ...ays Example The main controller board shows the non critical controller fault code icon with a two digit code 08 and wrench symbol This is a non critical fault code that indicates the right side scrub...

Page 34: ...waste water from the tank If tank is empty and the icon is displayed service clean the tank float it could be stuck Also check the float circuit wiring for an open Warning Displays Example The main c...

Page 35: ...hat some critical faults will prevent the operation of certain machine functions Hydraulic Temperature The hydraulic oil temperature has exceeded an average operating temperature greater than 220 degr...

Page 36: ...35 Service Manual SC8000 Chassis System Major Chassis Components Front Hood Rear Cover Assembly Floor Weldment Cover Support Assembly Chassis Weldment Front Floor Tank Heavy Bumper Assembly...

Page 37: ...Chassis System 36 Service Manual SC8000 Rear Cover Rear Grille Cover Support Weldment RH Latch Latch Handle Heavy Bumper Weldment...

Page 38: ...System controller on the Kubota LPG engine and the APECS 3000 Governor on the Kubota diesel to monitor engine parameters The Driver Box also communicates with the Relay PCB which provides the engine s...

Page 39: ...m 38 Service Manual SC8000 Component Locations Driver Box Dashboard Panel Main Control Board Connector J3 Main Control Board Connector J1 Main Control Board Connector J2 K1 Power Relay Relay PCB Start...

Page 40: ...J1 14 Open J1 15 Open J1 16 18 1 RED BLK Input S29 Horn switch J1 17 Open J1 18 16 1 BLK ground Chassis ground X 49 J1 19 18 1 GRN ORN Input Sender hydraulic oil temperature J1 20 18 1 VIO WHT Input S...

Page 41: ...put CB4 circuit breaker 20A J2 13 18 1 WHT ORN Output K4 glow plug relay coil J2 14 Open J2 15 Open J2 16 Open J2 17 16 2 BLK Input X49 control box ground J2 18 16 3 BLK Input X49 control box ground J...

Page 42: ...nd taillights J3 9 16 1 GRA RED Input CB1 Circuit Breaker 20A J3 10 Open J3 11 16 4 BLK Input X49 control box ground J3 12 16 5 BLK Input X49 control box ground J3 13 16 6 BLK Input X49 control box gr...

Page 43: ...read Neutral Deadband 3 Press the green Scrub On switch The first line of the LCD will read Neutral Set The second line of the display will show the resistance value in ohms that the control board is...

Page 44: ...shers switch until all the display panel lights turn off approximately three seconds then release the switch The first line of the LCD will read CONFIGURATION DISPLAY 3 Press the Side Broom Up and Dow...

Page 45: ...es Clear Fault Codes Are You Sure Press the Scrub On switch to clear the fault codes The display will show No Stored Codes Engine Type Undefined Propane Gasoline Diesel Undefined Propane Gasoline Dies...

Page 46: ...menu options 5 Press the Side Broom Up and Side Broom Down switches to select the desired option 6 When the arrow is pointing to an option Press the green Scrub On switch to select the option The disp...

Page 47: ...um Solution Flow Flow Rate 1 5 Detergent Mix 300 1 256 1 200 1 150 1 128 1 100 1 64 1 50 1 32 1 26 1 Last Used Neutral Off Delay no delay 0 5 3 seconds Selects neutral off delay time 0 5 to 3 seconds...

Page 48: ...0 seconds in 1 second increments 10 30 seconds Selects the vacuum off delay time 10 to 30 seconds in 1 second increments Normal Neutral Unlocked Control Locks Detergent Detergent Solution Side Scrub S...

Page 49: ...250 seconds in 1 second increments Back up Alarm Reverse Only Forward Reverse 10 250 seconds Extended Scrub System Start Up State Appears only when the Extended Scrub system is installed Operating Mo...

Page 50: ...ion menu items as shown on the following pages 5 When the arrow is pointing to the desired menu item press the green Scrub On switch to display the next level of configuration options 6 Press the Side...

Page 51: ...cy Flashers and Headlight switches then turn the key switch on Installed Diesel Gas Propane Detergent System Not Installed Not Installed Installed EcoFlex System Side Scrub System Not Installed Instal...

Page 52: ...ended Scrub System Not Installed Not Installed Installed Back up Alarm Installed Not Installed Signal Lights Installed US Display Display Screen Global Display Off Operator Presence On Restore Default...

Page 53: ...onger than one second If the engine is running it is switched Off by inhibiting the ignition and start signals If the Recovery system is On and the Scrub system is Off the Recovery system transitions...

Page 54: ...N and GRA ORN Check pump motors for short circuits replace as needed 00 C Extend scrub pump over current Check Pump motor M6 wiring for problems GRN BLU and GRA ORN Same fault line used for main solut...

Page 55: ...right side scrub solution valves and pump electrical ladder detail 08 NC Right side scrub solution solenoid valve over current Check L11 solenoid coil wiring for problems ORN and BLU YEL Check coil r...

Page 56: ...ss than 6 ohms replace Also see main scrub and right side scrub lift electrical ladder detail 19 NC Horn over current Check H4 horn wiring for problems ORN GRN and WHT YEL Check horn for short circuit...

Page 57: ...RED Check pump motors for short circuit replace as needed 32 NC Detergent pump 2 over current See pump 1 33 C Engine hot fault Coolant temperature high causes engine fault sets on diesel machine only...

Page 58: ...current X 05 No speed input 2200 RPM ECM 06 No speed input 2400 RPM ECM 07 Main solution solenoid valve L10 over current X X 08 Right side scrub solution solenoid L11 over current X 09 Vacuum fan sol...

Page 59: ...breaker CB3 over current 28 20A circuit breaker CB4 over current 29 10A circuit breaker CB5 over current 30 Side sweep lift M7 actuator over current X 31 1 detergent pump M10 over current X 32 2 deter...

Page 60: ...reaker CB6 must be closed to provide voltage to the Key Switch S1 The Ignition Key Switch S1 must be on to provide positive battery voltage to the K1 Relay Coil and certain inputs on the Driver Box Th...

Page 61: ...elay is mounted inside the control board assembly Note that a second identical power relay K4 is installed on diesel models as the glow plug power relay Circuit Breakers The Circuit Breakers are mount...

Page 62: ...ed on LCD diesel engine only Glow plug relay K4 coil over current fault code 14 displayed Check K4 relay coil wiring for problems ORN GRN and WHT ORN Check coil resistance If less than 36 ohms replace...

Page 63: ...fault for CB2 power for mist pump M5 and M8 wash hose pump Check for BLU wire shorted to ground Fault code 27 displayed 15A Circuit breaker CB3 over current Control board has sensed open circuit fault...

Page 64: ...signal J7 8 ORN GRN Input B Module ignition relay Bat coil signal Note The normal condition for the start inhibit is in its non inhibited state A float voltage of approximately 8V when referenced to...

Page 65: ...Digital voltage 0V B Switch to ground Ground or open closes when Operator in seat J1 6 Not Used J1 7 Input Fuel Level Sensor diesel Variable resistance 0 40 1 66V B Variable resistance to ground 33 2...

Page 66: ...h Digital voltage 0V B Switch to ground Ground or open closes when tank is empty J1 22 Output Start Inhibit Low side driver 0V B MOSFET gate on relay PCB assy 3 mA 12V Ground or float J1 23 Ground J1...

Page 67: ...2 3 Output Side Scrub Lift Solenoid Low side driver 0V B Hydraulic coil 1 5A 12V 8 ohms 20 C J2 4 Output Scrub Lock Solenoid Low side driver 0V B Hydraulic coil 1 5A 12V 8 ohms 20 C J2 5 Output Squeeg...

Page 68: ...W J2 23 Power B Circuit Breaker 5 VACC5 Power 12 1 5 VDC B System voltage Power from circuit breaker 5 10A J2 24 Output Scrub Pressure Up Low side PWM driver PWM 0 12V B Hydraulic coil 2 1A 12V 2 2 oh...

Page 69: ...stem voltage Power from circuit breaker 1 20A J3 2 Output Main Solution Pump Low side PWM driver PWM 0 12V B Pump motor 11 5 FLA 12V 46 LRA 5KHz variable duty cycle J3 3 Ground J3 4 Output Side Sweep...

Page 70: ...15 VDC B System voltage Power from circuit breaker 3 15A J3 17 Output Horn Low side driver 0V B Electromagnetic horn 4A 12V J3 18 Output Side Sweep Mist Pump Low side driver 0V B Pump motor 3 9 FLA 24...

Page 71: ...unication J1 3 ORN BLK CAN H CAN Bus 0 5V Differential serial data 2 50v key on User interface panel serial communication J1 4 Not Used J1 5 YEL Seat Switch Digital voltage 0V Switch to ground 12 8v o...

Page 72: ...ke Pedal Switch Digital voltage 0V Switch to ground 0 04v at rest 11 9v pressed Closes when brake pedal released J1 21 VIO YEL Solution Empty Switch Digital voltage 0V Switch to ground 0 004v empty 12...

Page 73: ...tch to ground 11 7v key on Ground or open closed when tank is empty J1 34 YEL WHT Ignition Inhibit Low side driver 0V MOSFET gate on relay PCB assy 3 mA 12V 11 7v key on Ground or float J1 35 Not Used...

Page 74: ...was pulsed on momentarily You may not see the change without a Min Max function on your voltmeter J2 11 BLU BLK Backup Audible Alarm Low side driver 0V Electronic alarm 0 25A 12V 14 4v off J2 12 ORN...

Page 75: ...side driver 12V Engine Control Module input 2 79v at idle 14 3v Mid 2 81v High 12V for 2400 RPM float otherwise J2 30 GRA BLU ECM Engine 2400 RPM High side driver 12V Engine Control Module input 2 79...

Page 76: ...FLA 80 LRA est Not Measured Bridge switching power ground for Down otherwise open J3 5 WHT RED Side Sweep Actuator LO Black Lead H bridge driver 0V Actuator motor 20 2 FLA 80 LRA est Not Measured Bri...

Page 77: ...ump Low side driver 0V Pump motor 3 9 FLA 24V 16 LRA Not Measured 24V pump operated at 12V J3 19 BLK RED Detergent Pump 2 H bridge driver 0 to B 0 65A 12V 0 16v to 14 5v Pulsed on and off at a rate le...

Page 78: ...on with no side sweep Pin ID Wire Color Pin Assignment Real World Shop Measurements J7 1 VIO GRA B 12 3v key on J7 2 BLU PINK Engine Start 0 03v key on 10 7v cranking J7 3 WHT BRN Start Inhibit 0 2v k...

Page 79: ...6381E16 YEL BLK RED RED RED VIO BLK BLK WHT ORN ORN ORN YEL BLU ORN RED ORN BLU RED ORN ORN GRN VIO YEL GRN ORN BLK RED PINK YEL RED VIO RED VIO RED VIO RED ORN WHT VIO ORN BLU YEL PINK GRN YEL GRN YE...

Page 80: ...K BRN ORN GRN BRN GRN BLK BRN BRN BLK BLU GRN BLK RED YEL VIO YEL GRA YEL BLK BLK VIO WHT BLK BLU BLK BLK BLK BLK BLK BLK VIO BRN PINK PINK GRN YEL VIO GRA RED GRA BLU VIO GRA BLK YEL GRA RED GRN BRN...

Page 81: ...Wiring Diagram Kubota 1 6L LPG Engine 56107659 REV A Electrical System 80 Service Manual SC8000...

Page 82: ...6 2 BLK 18 7 BLK 18 11 BLU 12 1 BLU 14 1 RED 1 1 BLK 1 1 GRN BRN 18 8 GRN BLU 16 1 BLK 4 1 BLK 18 14 BLK 18 13 BLK 18 14 BLK 18 15 BLK 16 8 BLK 16 10 BLK 16 9 BLK 16 10 BLK RED 16 1 PINK 16 8 PINK 16...

Page 83: ...YEL 18 7 RED 16 3 RED YEL 18 7 BLK 16 12 GRA BRN 18 2 GRN YEL 18 3 RED 12 2 BLK 16 13 RED 16 2 RED YEL 18 8 RED 16 1 RED 16 2 VIO 18 22 GRA 18 6 VIO 18 21 BLK 16 13 RED YEL 18 9 RED YEL 18 8 RED 6 1...

Page 84: ...ng system A Woodward APECS 3000 Governor controls the fuel quantity to maintain the selected RPM or shut the engine off Diesel Engine Starter Circuit Diagram 30 50 L I F S P DRIVE BOX PIN J1 22 PIN J1...

Page 85: ...gine to run The Ignition_Inhibit relay must not be energized This means that the Driver Box is not providing a ground to the coil through J1 34 The Oil Pressure Switch S28 must be open This switch is...

Page 86: ...8000 Component Locations X1 and X2 Electrical Connectors Engine Ground Connection Oil Pressure Sensor above oil filter Coolant Temperature Sensor above alternator Governor Engine Speed Magnetic Pickup...

Page 87: ...0 C SAE 10W or 10W 30 Diesel Lubricating Oil Note With the emission control now in effect the CF 4 and CG 4 lubricating oils have been developed for use with a low sulfur fuel used in on road vehicle...

Page 88: ...ing System Tool onto the radiator filler neck then press the Air Switch The compressed air travelling through the Venturi Tube Assembly will pull a vacuum on the cooling system to remove air from the...

Page 89: ...back into the canister until it is completely dry Troubleshooting General Troubleshooting Problem Cause Correction The yellow attention light and glow plug display icon will not go out Glow plug rela...

Page 90: ...Not Crank Start Inhibit Active Drive pedal sensor switch R1 not calibrated follow programming instructions to calibrate foot pedal sensor Drive pedal activated out of neutral out of the calibrated de...

Page 91: ...nd the engine will revert to idle See additional troubleshooting notes for control circuit details Component Current Amps Coil Ohms Actuator 1 1 5 Amps 3 2 ohms Pin Wire Color Function Voltage at 1300...

Page 92: ...ng check is OK substitute a new Driver Box main controller and Dashboard Panel 3 Check the status lamp on the governor for fault codes Reference the flash code table found on the APECS 3000 website 4...

Page 93: ...mp Bosch MD type mini pump Engine firing order 1 3 4 2 Injection Timing 19 degrees before TDC Oil Capacity 5 5 qt 5 2L Oil Pan depth 4 9 12 4 cm Cooling Capacity 8 qt 7 5L Horsepower 46 gross 2800 RPM...

Page 94: ...ndition for the start inhibit is in its non inhibited state A float voltage of approximately 8V when referenced to B is measured when the key is in the start position When inhibited the signal is pull...

Page 95: ...lly closed valve opens during cranking and engine run cycles The ECM controls the voltage to the LPG Fuel Lock off device The DSR is a two stage regulator that is a combination vaporizer pressure regu...

Page 96: ...voltage to the IGN SW INPUT Note that if the Driver Box sends a RUN INHIBIT signal from J1 34 to the K2 RELAY CONTROL SWITCH to open the switch no ground will be provided to the IGN relay coil K2 the...

Page 97: ...r the key switch is turned off This burns any fuel remaining in the engine to prevent backfires the next time the engine is started When the key switch is turned off the Engine System switches off the...

Page 98: ...nator Electronic Throttle Body Cam Position Sensor Connector 1 Connector 2 Crank Position Sensor DEPR Direct Electronic Pressure Regulator Diagnostic Connector Engine Control Module Engine Coolant Sen...

Page 99: ...Engine System LPG 98 Service Manual SC8000 Alternator Oil Filter Oil Pressure Switch Starter Figure 2 Right Side Figure 3 Top Diagnostic Connector TMAP Sensor Engine Fuse Relay Box Ignition Coils...

Page 100: ...Coolant Sensor Figure 5 Top Rear Cam Position Sensor Direct Electronic Pressure Regulator DEPR Mixer Assembly Figure 6 Oxygen Sensors Pre Catalyst O2 Sensor Oil Filter Post Catalyst O2 Sensor Right Re...

Page 101: ...k LPG tank setting condition if necessary Check LPG fuel connector X Change engine oil X Replace oil filter cartridge X Check LPG fuel hose and clamp bands X Clean spark plugs X Check fuel filter X Ch...

Page 102: ...rties of API classification SL or higher and be suited to the ambient temperature as listed below Refer to the engine manufacturer s service manuals for oil capacities and additional engine specificat...

Page 103: ...ng System Tool onto the radiator filler neck then press the Air Switch The compressed air travelling through the Venturi Tube Assembly will pull a vacuum on the cooling system to remove air from the s...

Page 104: ...ance machines using the GM 1 6L and GM 3 0L engines You will need a new version of the GCP software to work with the Kubota WG1605 engine along with the correlating password The software password and...

Page 105: ...ture is too high Refer to the Engine Overheating Problems section below The oil pressure has dropped too low Refer to the Loss of Oil Pressure Protection section below Engine Management System Problem...

Page 106: ...ystem Forced Lubrication by Trochoid Pump Oil Pressure Indication Electrical Type Switch Engine Oil Pressure Hot Factory Specification Allowable Limit At Idle Speed 49 kPa 0 50 kgf cm2 7 1 psi At Rate...

Page 107: ...ey may help you recognize what normal looks like and give you some standard of comparison Engine Vacuum 17 5 18 HG 59 61kPa at warm idle Measured at approximately 900 ft elevation LP Fuel Pressure Pri...

Page 108: ...n 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: ...low speed accessory pump is actually two separate pumps in one unit 1 20 and 0 58 CIR and powers the other machine components A system of electrically controlled solenoid valves directs the hydraulic...

Page 110: ...be open to indicate that the hydraulic filter is not plugged Fuse 100A Relay Power Dashboard Panel Driver Box J2 23 VACC5 J2 12 VACC4 J2 8 J2 5 J2 6 J2 22 J2 10 J2 7 J2 24 J2 26 J2 4 J2 3 J2 2 CB4 Ci...

Page 111: ...Hydraulic System 110 Service Manual SC8000 Hydraulic Schematic...

Page 112: ...mbly Reservoir Assembly Steering Pump Assembly Squeegee Cylinder Assembly Drive Motor Assembly Pump Assembly Low speed Valve Block Assembly Steer Cylinder Assembly Scrub Lift Cylinder Assembly Oil Coo...

Page 113: ...embly are located as shown Hydraulic Motors The Vacuum Fan Motor Assembly Steering Pump Assembly Drive Motor Assembly and Main Brush Motor Assembly are located as shown Scrub Lift Cylinder Assembly Sq...

Page 114: ...the engine output shaft and are located as shown The Accessory Pump Assembly includes the two auxiliary hydraulic pumps Hydraulic Valve Block Manifold The Hydraulic Valve Block Manifold is located on...

Page 115: ...Hydraulic System 114 Service Manual SC8000 The Solenoid Valves and System Relief Valves are located on the Hydraulic Valve Block Manifold as shown S2 top S3 bottom S1 S4 S7...

Page 116: ...controls the right side scrub sweep motor s S8 L8 is located above the front end of the Scrub Deck The Right Side Scrub Lift Cylinder Solenoid Valve S9 L9 controls the side scrub lift cylinder S9 L9...

Page 117: ...il 2 2 ohms R1 Solenoid coil and valve cartridge pressure relief vacuum fan 2700 psi R2 Solenoid coil and valve cartridge pressure relief scrub brush s 2700 psi L8 S8 Solenoid coil and valve cartridge...

Page 118: ...oil level should not be higher than 12 7 mm above the bottom of the filler screen 3 Change and flush the oil if major contamination from a mechanical failure occurs Hydraulic Oil FIlter 1 Release the...

Page 119: ...that is performing poorly Refer to the Specifications tables to determine the motor RPM If the motor speed is correct the pump is producing the correct amount of oil flow However this does not mean th...

Page 120: ...i reading is above the bypass psi but is below the operational psi check the broom adjustment and wear Check the individual system Troubleshooting sections of this manual for additional information TP...

Page 121: ...ing Forward 3500 PSI Reverse 2500 PSI Charge Relief 200 250 PSI Dual Low speed Accessory Hydraulic Pump Ratings Displacement Front 0 58 CID Rear 1 20 CID Speed 3200 RPM max Rated Pressure 3000 PSI Max...

Page 122: ...gine 2200 RPM no systems running test port TP3 1 20 3 0 2200 296 1500 Steering unit driving and turning 4 5 500 The bypass pressure is the pressure reading with no motor or cylinder operating flow thr...

Page 123: ...Scrub Brush Pressure Setting Regular 1 X X X Scrub Brush Pressure Setting Heavy 2 X X X Scrub Brush Pressure Setting Extreme 3 X X X Right Side Scrub Brush Pressure Settings 1 2 and 3 X X X X Scrub B...

Page 124: ...Hydraulic System 123 Service Manual SC8000 Special Tools Hydraulic test gauge w connector 3000 psi range p n 56504516...

Page 125: ...ration 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 o...

Page 126: ...nts 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 Extended Scrub Kit The Extended Scrub...

Page 127: ...000 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 Ove...

Page 128: ...ions and Accessories 127 Service Manual SC8000 Description Illustration Overhead Guard Canopy Kit overhead guard sold separately Rear Bumper Kit Recovery Tank Clean out Kit Recovery Tank Debris Tray K...

Page 129: ...and Accessories 128 Service Manual SC8000 Description Illustration Drain Hose Extension Remote Foot actuated Horn Switch Kit Solution Auto fill Kit Right hand Dual Armrest Kit Seat Belt Kit for Standa...

Page 130: ...Manual SC8000 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 Vacuu...

Page 131: ...ine motion stops The vacuum fan motor can also be switched on independent of the scrub system by pressing the vacuum switch old style control panel or the vacuum wand switch new style control panel Th...

Page 132: ...edal Sensor R1 that the drive pedal has been moved from the neutral position The Recovery Full Switch S2 must be closed recovery tank not full Recovery System Hydraulic Diagram An electric solenoid S1...

Page 133: ...ugh the Vacuum Fan motor then to the Reservoir The Pressure Relief Valve will open to allow the oil to flow back into the Propulsion Pump Charge Port if a high pressure condition occurs in the hydraul...

Page 134: ...to pull the wastewater from the squeegee and Squeegee Hose Assembly through the Cuffed Hose Assembly and into the Recovery Tank The Recovery Tank Cover Assembly opens to allow access to the inside of...

Page 135: ...the vacuum fan assembly and the recovery tank and tighten replace as necessary Check the gaskets and replace as necessary Check the recovery tank for damage Restrictions due to built up debris in the...

Page 136: ...to the recovery tank 1 Drain the recovery tank Note If your machine is equipped with an extended scrub system you must disconnect the Float Switch Quick disconnect and Solution Quick disconnect Coupl...

Page 137: ...k then carefully swing the Recovery Tank down and lift it off of the machine Note When you reinstall the Recovery Tank set the Tank onto the two Mounting Pins on the frame then tilt the Tank up and re...

Page 138: ...Rotation Clockwise as viewed from shaft end Pressure Ratings 3000 PSI Continuous 4000 PSI Intermittent Displacement 0 129 CIR Vacuum Water Lift Sealed 33 7 inches H2 O 2200 RPM Vacuum Fan Solenoid Va...

Page 139: ...pressure Cylindrical Scrub System Wiring Diagram Circuit Description For the scrub system to work the key switch must be on the engine must be running and the Driver Box must receive a signal from th...

Page 140: ...in J2 24 to the Scrub Pressure Proportional Up valve S7 to provide the down scrub pressure selected by the Operator Note that the Driver Box ground signals to S5 and S7 are pulse width modulated PWM s...

Page 141: ...motors are on the Accessory Pump 1 20 CID sends oil to the Priority Flow Divider which directs the oil to the energized closed Scrub Brush Valve L4 The oil is directed past the Scrub Brush Valve L4 a...

Page 142: ...linder Lock L6 valve The Brush Proportional Up L7 valve provides adequate oil pressure to the bottom port on the Scrub Lift Cylinder through the Scrub Cylinder Lock L6 valve to raise the scrub deck Th...

Page 143: ...Scrub Lift Cylinder The energized Scrub Brush Proportional Down L5 valve provides oil pressure ranging from approximately 333 to 499 psi depending on the scrub pressure selected to the top port on th...

Page 144: ...outside of the Brush Housing Weldment The removable Hopper collects any dirt or debris picked up by the scrub brushes The Screen Weldment sits in the Hopper and is connected to a vacuum hose that rem...

Page 145: ...and L7 ORN and ORN RED Check coil resistance If less than 1 8 ohms replace Also see main scrub on and right scrub brushes deck pressure electrical ladder detail and further specs Scrub brush motor so...

Page 146: ...e deck lift cylinder and deck lift linkage Remove the S5 and S7 scrub lift cylinder valve cartridges from the manifold Inspect clean and operate the cartridges outside of the manifold If the cartridge...

Page 147: ...engine must be running The scrub on mode must be selected on the Dashboard Panel Component Current Amps Coil Resistance Ohms L5 2 1 Amps 2 2 ohms L6 1 5 Amps 8 ohms L9 1 5 Amps 8 ohms 12VDC 12VDC 0V L...

Page 148: ...e Ohms L5 2 1 Amps 2 2 ohms L6 1 5 Amps 8 ohms L7 2 1 Amps 2 2 ohms Pressure Setting L5 Coil Amp draw readings 10 1 1 38 1 75 amps varies with scrub setting selected 2 3 Pressure Setting L7 Coil Amp d...

Page 149: ...g The scrub on mode must be selected on the Dashboard Panel The drive pedal must be activated moved from the neutral position Component Current Amps Coil Resistance Ohms L4 1 5 Amps 8 ohms L8 1 5 Amps...

Page 150: ...id Valve L7 Current 2 1 amps Nominal Coil Resistance 2 2 ohms Voltage Range PWM 0 12 V Main Broom Motors Displacement 4 5 CIR Scrub Pressures Proportioning Valve Pressure Type Scrub Pressure Setting H...

Page 151: ...Scrub System Cylindrical 150 Service Manual SC8000 Special Tools Hydraulic test gauge w connector 3000 psi range p n 56504516...

Page 152: ...ide Scrub System Wiring Diagram Circuit Description For the right side scrub system to work the key switch must be on the engine must be running and the Driver Box must receive a signal from the Dashb...

Page 153: ...lift cylinder The Driver Box must provide the appropriate ground signal from pin J2 26 to the Scrub Pressure Proportional Down valve S5 and the appropriate ground signal from pin J2 24 to the Scrub P...

Page 154: ...eck Lift Cylinder D to the lower chamber on the Side Scrub Lift Cylinder to raise the right side scrub brush The Side Scrub Lift Valve L9 directs the oil from the upper chamber on the Side Scrub Lift...

Page 155: ...mbly The Right Side Scrub Lift Cylinder extends and retracts the Right Scrub Assembly in conjunction with the cylindrical scrub deck The Right Side Scrub Motor is plumbed into the hydraulic lines for...

Page 156: ...e S8 L8 controls the right side scrub motor S8 L8 is located above the front end of the Scrub Deck The Right Side Scrub Lift Cylinder Solenoid Valve S9 L9 controls the side scrub lift cylinder S9 L9 i...

Page 157: ...er Rod End to lengthen or shorten the Rod End Assembly as necessary to get the correct brush angle to the floor Note The nominal factory dimension between the Rod End stud centers is 7 5 06 190 5 mm 1...

Page 158: ...over current fault code 08 displayed Check L11 solenoid coil wiring for problems ORN and BLU YEL Check coil resistance If less than 10 ohms replace Also see main scrub and right side scrub solution v...

Page 159: ...ust be running The scrub on mode and side broom scrub must be selected on the Dashboard Panel Component Current Amps Coil Resistance Ohms L5 2 1 Amps 2 2 ohms L6 1 5 Amps 8 ohms L9 1 5 Amps 8 ohms 12V...

Page 160: ...rub on mode and side broom scrub must be selected on the Dashboard Panel The drive pedal must be activated moved from the neutral position Component Current Amps Coil Resistance Ohms L4 1 5 Amps 8 ohm...

Page 161: ...ance 8 ohms Side Sweep Scrub Solenoid Valve L8 Current 1 5 amps Nominal Coil Resistance 8 ohms Side Scrub Lift Solenoid Valve L9 Current 1 5 amps Nominal Coil Resistance 8 ohms Right Side Scrub Motor...

Page 162: ...en the scrub system is disabled no solution will flow to the Scrub Brushes regardless of drive pedal or scrub deck position The operator can enable the solution system independent of the scrub system...

Page 163: ...The Detergent Supply Line from the Detergent Cartridge is split into two lines one feeding each Detergent Pump The two lines from the Detergent Pumps merge into one Detergent Supply Line which is the...

Page 164: ...hat the solution tank is empty If the extended scrub system is configured to the USE ANYTIME mode the solution tank empty switch S3 will have no effect Note that when the machine is in the extended sc...

Page 165: ...Wand Pump M8 to pump solution from the solution tank to the hose and Wash Hose Nozzle located behind the Operator seat The wash hose kit operates independently and does not require the Operator to act...

Page 166: ...ion J1 3 CAN J1 2 CAN J1 27 J1 5 J6 3 CAN J6 1 B J6 2 B J6 4 CAN Twisted Pair Twisted Pair 1 87 30 2 1 2 1 2 Switch Seat Switch Recovery Full opens when the recovery tank is full 1 2 S2 S30 J1 10 J1 3...

Page 167: ...perator has actuated the scrub or solution system The Driver Box must receive a signal from the Drive Pedal Sensor R1 that the drive pedal has been moved from the neutral position The Solution Empty S...

Page 168: ...the second Detergent Pump turning on Hence an interval of 0 indicates that one pump should turn on without delay when the other pump turns off The Interval Time is what controls the combined detergen...

Page 169: ...Operator has actuated the scrub or solution system The Driver Box must receive a signal from the Drive Pedal Sensor R1 that the drive pedal has been moved from the neutral position Fuse 100A Relay Pow...

Page 170: ...in scrub and side scrub systems The Driver Box must receive a signal from the Drive Pedal Sensor R1 that the drive pedal has been moved from the neutral position Fuse 100A Relay Power Dashboard Panel...

Page 171: ...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 Wand Pump The key switch must be on for the Wand Pump to operate Fuse...

Page 172: ...abled the side brooms The Driver Box must receive a signal from the Drive Pedal Sensor R1 that the drive pedal has been moved from the neutral position Fuse 100A Relay Power Dashboard Panel Driver Box...

Page 173: ...Solution System 172 Service Manual SC8000 Component Locations Extended Scrub Pump M6 Extended Scrub Float Switch S7 Recovery Tank Full Switch S2...

Page 174: ...Solution System 173 Service Manual SC8000 Mist Pump M5 and Solution Filter Solution Pump M4 top Wand Pump M8 bottom Detergent Pumps M10 and M11 behind cover panel...

Page 175: ...n shutoff valve Note Place a suitable container underneath the filter to catch any solution that may leak from the hoses 2 Unscrew the Filter Cover and remove the Filter Cover and screen from the filt...

Page 176: ...ed from the front of the machine to remove the Nozzle Cap Spray Nozzle and Check Valve Strainer from the Plastic Nozzle Adapter 3 Rinse the Nozzle Cap Spray Nozzle and Check Valve Strainer in clean wa...

Page 177: ...re purging because a small amount of detergent will be dispensed in the process To Purge When Changing Detergents the scrub system must be off 1 Disconnect and remove the detergent cartridge 2 Turn th...

Page 178: ...switch for approximately two seconds 5 Release the switch when the detergent Purge Icon appears on the display and the detergent indicator starts flashing Note The Detergent Box has Detergent Level V...

Page 179: ...ressed On EcoFlex systems the detergent mixture will be displayed whenever the detergent system is on Once set the detergent flow rate automatically increases and decreases with the solution flow rate...

Page 180: ...lenoid coil wiring for problems ORN and YEL GRN Check coil resistance If less than 6 ohms replace The solution shutoff valve is plugged or inoperative Clean or replace the solution shutoff valve Inade...

Page 181: ...ge to the extended scrub pump 1 Check pump motors for short circuits and replace as necessary Check the wiring and circuit breakers upstream of the pump 2 Check the J2 35 output from the Driver Box Th...

Page 182: ...BLU 2 pump wire colors BLK YEL and BLK RED Check the detergent pump motors for short circuit and replace as necessary Note The signal controlling the detergent pump is extremely complex and field trou...

Page 183: ...he scrub on mode must be selected on the Dashboard Panel The drive pedal must be activated moved from the neutral position L10 B B from K1 Power Relay B OUTPUT TOUCH PAD DASHBOARD PANEL CB4 20A ORN MA...

Page 184: ...1 5 amps Nominal Coil Resistance 8 ohms Right Side Solution Solenoid Valve L11 Voltage 12 VDC Coil Power 11W Current 1 0 amps Nominal Coil Resistance 12 ohms Wand Pump M8 Voltage 12 VDC Max Current 12...

Page 185: ...n 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 AXP EDS and EcoFlex detergent systems Refillable cartridge q...

Page 186: ...ram Circuit Description For the squeegee system to work the key switch must be on the engine must be running and the Driver Box must receive a signal from the Dashboard Panel via the CAN Bus that the...

Page 187: ...pump charge pressure relief valve and The back pressure created by the return flow through the cooler and filter en route to the piston pump charge port Squeegee Up To retract the squeegee scrub off...

Page 188: ...queegee Down Solenoid Valve L2 and the Squeegee Up Solenoid Valve L3 are de energized to shut off the flow of oil to the Squeegee Lift Cylinder and lock the squeegee in the up position 250 psi Back Pr...

Page 189: ...red Parallel Arms bushings bearings and fasteners connect the Squeegee Lift Weldment to the machine frame The Squeegee Tilt Adjust Knob and the Squeegee Height Adjust Knobs allow you to adjust the ang...

Page 190: ...ueegee Up electrical ladder detail Squeegee DN solenoid over current fault code 12 is displayed Check L2 solenoid coil wiring for problems GRN BRN and RED GRA Check coil resistance If less than 6 ohms...

Page 191: ...on mode must be selected or the vacuum system switched on at the Dashboard Panel The drive pedal must be activated moved from the neutral position Component Current Amps Coil Resistance Ohms L1 1 5 Am...

Page 192: ...rse position squeegee will rise up The Vacuum Fan will shut off after a time delay once the drive pedal is in the neutral position Note that if the seat switch is open the Vacuum Fan will run continuo...

Page 193: ...Service Manual SC8000 Specifications Component Specifications Squeegee Down Solenoid Valve L2 Current 1 5 amps Nominal Coil Resistance 8 ohms Squeegee Up Solenoid Valve L3 Current 1 5 amps Nominal Coi...

Page 194: ...e steering wheel rotates the shaft on the steering pump which controls the oil flow to the Steer Cylinder The Steer Cylinder extends and retracts the attached Rack which then rotates the Spur Gear and...

Page 195: ...which then directs the oil to the appropriate side of the Steer Cylinder to turn the front wheel in the corresponding direction The oil returns through the Steering Unit and returns to the Reservoir T...

Page 196: ...ring Unit Metering Valve or Steer Cylinder Component Locations Steering Unit The Steering Unit is driven by the steering wheel and is located in the steering column The Steering Unit unit includes the...

Page 197: ...teering System 196 Service Manual SC8000 Steer Cylinder The Steer Cylinder is mounted horizontally and drives the rack and spur gear connected to the drive wheel assembly Steer Cylinder Steer Cylinder...

Page 198: ...ng 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 Note If the steer cylinder is removed mark the teeth wher...

Page 199: ...Wiring Diagram Circuit Description For the side broom system to work the key switch must be on the engine must be running and the Driver Box must receive a signal from the Dashboard Panel via the CAN...

Page 200: ...side broom actuator to raise or lower the side broom s the Driver Box must provide voltage at the appropriate polarity from J3 4 RED extend or J3 5 BLK retract Pin J3 7 WHT is the common Side Broom S...

Page 201: ...rub Valve L8 is energized to direct the oil from the discharge side of the Cylindrical Scrub Brush Motors to the Side Scrub Broom Motors The oil then travels from the discharge side of the Side Scrub...

Page 202: ...xtends and retracts the pivot arm on the Side Broom Lift Weldment to raise and lower the Side Broom Assembly The DustGuard Mist Pump M5 supplies solution to the Nozzle Assembly to reduce the dust gene...

Page 203: ...r extends and retracts the pivot arm on the Side Broom Lift Weldment to raise and lower the Side Broom Assemblies The DustGuard Mist Pump M5 supplies solution to the two Nozzle Assemblies The Side Swe...

Page 204: ...oom Lift Actuator Motor 1 Assemble the jumper wire that you ll need to connect machine battery to the three wire connector on the actuator Refer to the adjacent Jumper Wire Assembly Schematic and Bill...

Page 205: ...t with the OUT dimension shown 9 If the OUT measurement doesn t match the dimension shown it will be necessary to remove the rubber Adjuster Cover and rotate the outside hex adjuster underneath the Ad...

Page 206: ...ck coil resistance If less than 6 ohms replace Also see the Main Scrub and Side Sweep Scrub On electrical ladder detail Side sweep lift actuator over current fault code 30 displayed Three wires supply...

Page 207: ...b on mode and side broom scrub must be selected on the Dashboard Panel The drive pedal must be activated moved from the neutral position Component Current Amps Coil Resistance Ohms L4 1 5 Amps 8 ohms...

Page 208: ...ations Scrub Brush Solenoid Valve L4 Current 1 5 amps Nominal Coil Resistance 8 ohms Side Sweep Scrub Solenoid Valve L8 Current 1 5 amps Nominal Coil Resistance 8 ohms Side Broom Motor Displacement 17...

Page 209: ...are fastened to the Finished Spindles with four 3 8 16 x 75 Hex Screws The Finished Spindles are fastened to the machine frame with four 1 2 13 x 1 25 Hex Screws The Brake Cable Assembly connects the...

Page 210: ...nstall the Rod End into the brake pedal assembly then reinstall and tighten the Nyloc Nut 6 Check the brake tension as follows a Jack up the rear of the machine to get the rear wheels off of the groun...

Page 211: ...spindle and replace as required The wheel and or spindle is damaged The brakes are not working correctly The brakes are out of adjustment Adjust the brake tension The brake linings are worn out Replac...

Page 212: ...ctuates the Push Pull Control Cable which is connected to the Hydroback Centering Unit The Hydroback Centering Unit transfers the Push Pull Control Cable motion to the Piston Pump Lever Weldment attac...

Page 213: ...sses the hydraulic circuit from the piston pump to the Traction Drive Motor to allow the Front Wheel to rotate freely when towing or pushing the machine Electrical Schematic Front Wheel Traction Drive...

Page 214: ...iagrams Traction Drive Motor in Neutral When the foot pedal is in the neutral position with the engine running the Piston Pump is not sending any oil to the Traction Drive Motor Tow Valve Engaged When...

Page 215: ...to run in the forward direction for any reason front wheel stalled etc the Forward Relief Valve will open to allow oil to flow from and to the Piston Pump bypassing the Traction Drive Motor to prevent...

Page 216: ...roback Centering Unit is mounted on the left side of the Piston Pump The Rotary Sensor called the Drive Pedal Sensor on the electrical ladder diagram is fastened to the piston pump lever weldment Trac...

Page 217: ...ntil the front drive wheel is off the floor 4 Place supports at the front corners of the machine 5 Start the engine and observe the direction of the drive wheel rotation 6 Loosen the two 5 16 18 Hex H...

Page 218: ...he Rotary Sensor or Control Board Driver Box you will have to recalibrate the neutral deadband position and set the sensitivity as follows 1 Depress the foot pedal to the full reverse position then al...

Page 219: ...The display will return to the previous menu Press the red Scrub Off switch to return to the previous menu without changing the percentage value 9 Turn the Key Switch to the off position The new setti...

Page 220: ...mounting fork by the foot pedal Loosen the jam nuts and remove the Push Pull Control Cable from the mounting fork 6 Disconnect the rod end on the old Push Pull Control Cable from the foot pedal assemb...

Page 221: ...hen tighten the two jam nuts 18 Reinstall one jam nut and a star washer onto the Hydroback end of the new Push Pull Control Cable Only one jam nut is needed to fasten the Cable and Hydroback Centering...

Page 222: ...it and the larger threads on the outside of the Cable will thread directly into the front of the Hydroback Centering Unit 7 Reinstall the locknut and Rod End onto the Push Pull Control Cable 8 Reinsta...

Page 223: ...ering wheel all the way toward the left The fittings should be on the front side of the motor 3 Make sure the Hydraulic Hoses are routed up and inside the channel in the Drive Wheel Weldment as shown...

Page 224: ...steer Size 18 in x 6 in 457 mm x 152 mm P7 solid Traction Drive Motor Displacement 18 3 CIR Shaft Rotation Clockwise as viewed from slot end Wheel Drive Piston Pump Displacement 1 44 CIR Speed 3600 RP...

Page 225: ...er pin 16 Hex Jam Nut Torque to 150 ft lb 20 x 1 25 Hex Screw Use Loctite 242 torque to 90 ft lb 13 Nyloc Hex Nut Torque to 100 ft lb Drive Wheel Motor Spindle Nut Torque to 375 ft lb lubed or 475 ft...

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