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Advance acoustic 7765 Service Manual

Nilfisk cr1500; 56514850; 56514852; 56514854
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Advance 7765 / Nilfisk CR1500
Service Manual
Advance 7765 Models:
• 56514925 (Variable Dump Gas)
• 56514926 (Variable Dump LP)
• 56514927 (Variable Dump Diesel)
• 56514928 (Manual Dump Gas)
• 56514929 (Manual Dump LP GM3.0L)
• 56514930 (Manual Dump Diesel S4Q2)
• 56514931 (Variable Dump LP)
Nilfisk CR1500 Models:
• 56514850 (Variable Dump Gas)
• 56514852 (Variable Dump LP)
• 56514854 (Variable Dump Diesel))
6/12 Revised 1/18 Form No. 56043160
English

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  • Page 1 Advance 7765 / Nilfisk CR1500 Service Manual Nilfisk CR1500 Models: Advance 7765 Models: • 56514925 (Variable Dump Gas) • 56514850 (Variable Dump Gas) • 56514926 (Variable Dump LP) • 56514852 (Variable Dump LP) • 56514927 (Variable Dump Diesel) • 56514854 (Variable Dump Diesel)) •...

  • Page 2: Table Of Contents

    Service Manual – Advance 7765 / Nilfisk CR1500 Contents General Information General Machine Description Machine Configurations Hydraulic System Drive and Steering Systems Solution System Scrub System Squeegee System Recovery System Main Sweep System Side Sweep System (optional) Dust Control System (variable dump models only)
  • Page 3 Service Manual – Advance 7765 / Nilfisk CR1500 Contents Side Broom Controls Hopper Controls (Variable Dump models) Dust Control and Filter Shaker Controls (Variable Dump models) Miscellaneous Controls Dust Control System Functional Description Overview Filter Assembly Dust Control Vacuum Fan Motor Assembly...
  • Page 4 Service Manual – Advance 7765 / Nilfisk CR1500 Contents Engine System, Diesel Functional Description Overview Diesel Engine Wiring Diagram Circuit Description Component Locations Maintenance and Adjustments Engine Oil Engine Coolant Checking Engine Coolant Replacing Engine Coolant Engine Air Filter Maintenance...
  • Page 5 Service Manual – Advance 7765 / Nilfisk CR1500 Contents Hopper System Hydraulic Diagrams – Variable Dump Machine Hopper Control Valves in Neutral Position Lift Hopper Lower Hopper Open Hopper Dump Door Close Hopper Dump Door Component Locations Lubrication Points Troubleshooting...
  • Page 6 Service Manual – Advance 7765 / Nilfisk CR1500 Contents Squeegee Vacuum Fan On Squeegee Vacuum Fan Stalled Component Locations Recovery Tank Maintenance Daily Maintenance Recovery Tank Troubleshooting Vacuum Test Specifications Special Tools Scrub System Functional Description Overview Scrub Deck Scrub Brush Motor Control Valves...
  • Page 7 Service Manual – Advance 7765 / Nilfisk CR1500 Contents Specifications Component Specifications Solution System ESP Detergent System Squeegee System Functional Description Overview Rear Squeegee Assembly Swing Squeegee Support Squeegee Lift Assembly And Squeegee Deck Cylinder Squeegee Deck Cylinder and Control Valves...
  • Page 8 Service Manual – Advance 7765 / Nilfisk CR1500 Contents viii Sweep System, Side Broom Functional Description Overview Side Broom Sweep System Wiring Diagram Circuit Description Side Broom Sweep System Hydraulic Diagrams Side Broom Motor Off Side Broom Motor On Component Locations...

  • Page 9: General Information

    The machines are powered by a 3.0 liter, 86-hp GM gasoline or liquid propane gas (LPG) engine, or a 2.5 liter, 47.3-hp Mitsubishi diesel. The 7765 machines are available in two different hopper configurations; a manual dump (MD) model and a variable dump (VD) model. The CR1500 machines are only available in the variable dump configuration.

  • Page 10: Solution System

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Solution System The Solution System uses gravity feed to deliver the solution to the scrub brushes. A ball valve, actuated by a mechanical solution control lever and linkage, controls the solution flow. The solution flow is continuously- variable from no flow to approximately 1¾...

  • Page 11: Main Sweep System

    Service Manual Purpose and Application This Service Manual is a technical resource designed to aid service personnel in maintaining and repairing the Advance 7765 / Nilfisk CR1500 Sweeper/Scrubbers to ensure optimum performance and long service life. Please read it thoroughly before servicing your machine.

  • Page 12: Other Reference Manuals And Information Sources

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Other Reference Manuals and Information Sources Nilfisk-Advance Publications Instructions for Use Parts List Model Name Model Number Form Number Form Number Advance 7765 • 56514925 (VD Gas) 56041801 - English and Spanish 56042525 •...

  • Page 13: Diagnostic And Service Tools

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Diagnostic and Service Tools In addition to a full set of metric and standard tools, the following items are required in order to successfully and quickly perform troubleshooting and repair of Nilfisk-Advance Industrial floor cleaning equipment.
  • Page 14 Service Manual – Advance 7765 / Nilfisk CR1500 General Information • PSI diagnostics cable, 4-pin – 8-pin (Generation 1 old style), p/n 56109083 PSI diagnostics cable, 4-pin – 8-pin (Generation 1 old style), p/n 56109083 • Hydraulic test gauge w/connector, 3000 psi range,...

  • Page 15: Conventions

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Conventions All references to right, left, front and rear in this manual are as seen from the Operator’s seat position. Parts and Service Repairs should be performed by an Authorized Nilfisk-Advance Service Center that employs factory-trained service personnel and maintains an inventory of Nilfisk-Advance original replacement parts and accessories.

  • Page 16: Cautions And Warning Symbols

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Cautions and Warning Symbols Nilfisk-Advance uses the symbols below to signal potentially dangerous conditions. Read this information carefully and take the necessary steps to protect personnel and property. Danger! Is used to warn of immediate hazards that will cause severe personal injury or death.
  • Page 17 Service Manual – Advance 7765 / Nilfisk CR1500 General Information • Only use the brushes provided with the machine or those specified in the Instructions for Use. The use of other brushes may impair safety. Caution! Be sure to follow these safety precautions to avoid situations that could cause personal injury, damage to property or equipment damage.

  • Page 18: Hopper Safety Lock Arm (Variable Dump Only)

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Hopper Safety Lock Arm (variable dump only) To prevent the hopper from dropping unexpectedly and causing injury, always engage before working under the Safety Lock Arm hopper. The is mounted to the...

  • Page 19: Jacking The Machine

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Jacking the Machine Warning! Never work under a machine without safety stands or blocks to support the machine. When jacking the machine, do so at the designated Tie Down/Jacking Locations as shown below.

  • Page 20: Towing Or Pushing The Machine

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Towing or Pushing the Machine Caution! The machine’s hydrostatic wheel drive pump is equipped with a tow (bypass) valve that opens the hydraulic circuit to the wheel drive motor. This allows the wheel drive motor to “freewheel”...
  • Page 21 Service Manual – Advance 7765 / Nilfisk CR1500 General Information To open the hydraulic circuit to the wheel drive motor for towing, turn the Tow Valve Extension Shaft 90° to the bypass position (flats on the Shaft parallel to the front axle).

  • Page 22: Technical Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Technical Specifications General Specifications 3.0 L, 86 hp GM MPFI gasoline (petrol) Engines 3.0 L, 86 hp GM MPFI liquid propane (LPG) 2.5 L, 47.3 hp Mitsubishi diesel Length 107 in [272 cm]...

  • Page 23: Overall Dimensions

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Overall Dimensions Machine Width Machine Length Machine Height...

  • Page 24: Engine And Machine Performance

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Engine and Machine Performance Low - 850 RPM 3.0 L GM (gasoline and LP) High - 2000 RPM Engine speeds Low - 950 RPM Mitsubishi Diesel High - 2050 RPM...

  • Page 25: Recommended Service Materials

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Recommended Service Materials • Engine Oil (refer to your engine manual) • Hydraulic oil – Mobil Multi Purpose ATF or equivalent Dexron III fluid • Manufacturer-recommended coolant (antifreeze) 50/50 mix •...

  • Page 26: Weekly Maintenance/Every 50 Hours

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Weekly Maintenance/Every 50 Hours Location Maintenance Item Procedure Number Change crankcase oil (new or reconditioned diesel) Change oil filter (new or reconditioned diesel) Engine Check the fan belt tension and tighten as necessary Perform recommended engine maintenance (see applicable engine manual).

  • Page 27: Maintenance Every 200 Hours

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Maintenance Every 200 Hours Location Maintenance Item Procedure Number Change the crankcase oil (Gas and LPG) Engine Change the engine oil filter (Gas and LPG) Maintenance Every 250 Hours Location...

  • Page 28: Maintenance Item Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Maintenance Item Locations...

  • Page 29: Lubrication Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Lubrication Locations Note: Use a good grade multipurpose grease. Avoid using too much grease. Lubrication Every 100 Hours Location Procedure Number Lubricate the drive wheel swivel, wheel bearings and steering rack guide...
  • Page 30 Advance 7765 and Nilfisk CR1500 PM Checklist Defect Codes Customer needs adjustment binding Address dirty or contaminated damaged, bent or torn City leaks missing Model Serial Hours W worn out Does OPERATIONAL INSPECTION ITEMS Defect Codes (circle) Work Engine low speed: GM - 800 RPM, Mitsubishi - 950...
  • Page 31 Hopper clean Note: For additional service information see the Service Manual, form number 56043160, and Instructions for Use, form number 56041801 (7765); or 56041714, 56041715, 56041716, 56041717, 56041718 and 56041719 (CR1500). Defect Codes needs adjustment dirty or contaminated...

  • Page 32: General Machine Overview

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information General Machine Overview Major Machine Components Solution Line (from Solution Tank to Scrub Brushes) Recovery Tank Solution Tank Vacuum Hose (from Squeegee Pump to Recovery Inlet Tank) Strainer Engine Cover...

  • Page 33: Machine Controls

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Machine Controls Engine Controls • – main power/ignition Ignition Switch switch, functions as follows: – Turning the key to the full clockwise “start” position will start the engine. Note that this is a momentary position and the key will return to the “ignition on”...

  • Page 34: Gauges And Meters

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Gauges and Meters • – displays the Water Temperature Gauge engine coolant temperature. Water Temperature Low Fuel Voltmeter Gauge Warning Light • – (LPG only) Low Fuel Warning Light indicates a low-fuel condition.

  • Page 35: Esp/Recycle Option Controls And Indicators

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information • – lights to indicate that the solution tank is empty. Low Solution Warning Light Low Solution Warning Light ESP/Recycle Option Controls and Indicators • switch – switches the Recycling System ON/OFF optional ESP/Recycling system on and off.

  • Page 36: Squeegee And Recovery System Controls

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information • – controls the scrub brush rotation direction as follows. Note that this switch will Brush Rotation Switch only function with the in the “lower” position, and will light when set to the lower Scrub Brush Lift Switch (reverse) position.

  • Page 37: Main Broom Controls

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Main Broom Controls • – switches the main broom Main Broom Switch motor on and off as follows: – Pressing the switch to the “on” (upper) position will switch on the main broom.

  • Page 38: Side Broom Controls

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Side Broom Controls • – switches the side broom Side Broom Switch motor on and off as follows: – Pressing the switch to the “on” (upper) position will switch on the side broom.

  • Page 39: Hopper Controls (Variable Dump Models)

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Hopper Controls (Variable Dump models) • – mechanically actuates the Hopper Lift Lever hydraulic valves for the hopper lift cylinder to raise and lower the hopper as follows: – Moving the...

  • Page 40: Dust Control And Filter Shaker Controls (Variable Dump Models)

    Service Manual – Advance 7765 / Nilfisk CR1500 General Information Dust Control and Filter Shaker Controls (Variable Dump models) • – wet sweep bypass Dust Control Switch (optional on VD machines); switches the hydraulic dust control vacuum fan motor on and off as follows: –...
  • Page 41 Service Manual – Advance 7765 / Nilfisk CR1500 General Information • – actuates the front wheel Foot Brake Pedal brakes mechanically when depressed. Foot Accelerator Brake and Direction • – Pedal Control Pedal Accelerator and Directional Control Pedal controls the machine direction and speed.

  • Page 42: Dust Control System

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Functional Description Overview The dust control system is installed on variable dump machines only, and reduces the dust in the air that is generated while sweeping. The hydraulic dust control vacuum...

  • Page 43: Filter Assembly

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Filter Assembly Filter Shaker Motor Cover fastens to the Shaker Motor Plate and holds the Shaker Motor place. Knob Assembly (2) rotates the Shaker Motor Filter which vibrates the...

  • Page 44: Dust Control Motor Valves

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Dust Control Motor Valves Main Broom Solenoid (2) controls the Main Control Valve Main Broom supply of hydraulic oil to the main Solenoid (2) broom and dust control vacuum fan motors.

  • Page 45: Dust Control System Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Dust Control System Wiring Diagram Battery 12 VDC Shaker Motor 15 A Ign. Ignition Bat. Switch Shaker Relay Acc. Shaker Motor Switch Remove Wire when Dust Control Switch is Installed...

  • Page 46: Dust Control System Hydraulic Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Filter Shaker Switch On Filter Shaker Switch Off B+ Voltage 0 Volts(Off) B+ Voltage 0 Volts(Off) B+ Voltage (note 1) B+ Voltage (note 1) 46 (ground) 0 Volts(Off) 0 Volts(Off)

  • Page 47: Main Broom And Dust Control Motors On

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Main Broom and Dust Control Motors On Case Drain To Normal Rotation Brush (4) Dust Return Block Control 0.34 Motor Check Valve Main 4.50 Main Broom Broom Solenoid (2)

  • Page 48: Main Broom Motor On And Dust Control Motor Off (With Wet Sweep Bypass Option)

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System allows oil to circulate from the high-pressure side to the low-pressure side of the Check Valve Dust Control when the is switched off. This allows the high-speed to “coast”...

  • Page 49: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Component Locations The following components are included in this section: • Panel Filter/Filter Shaker Motor/Cover • Filter Clamp Weldment • Dust Control Vacuum Fan Motor/Impeller Assembly • Main Broom Solenoid •...
  • Page 50 Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Dust Control Vacuum Fan Motor is fastened to the Impeller Mounting Connected to . The impeller is and Guard Bracket Port 2 on the attached to the output shaft on the...
  • Page 51 Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System is part Main Broom Solenoid (2) of the . The Main Control Valve Main Main is mounted on the Control Valve Control Valve underside of the machine, in front of and to the left of the scrub deck.

  • Page 52: Dust Control Filter Maintenance

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System (Wet Dust Control Solenoid (1) Sweep Bypass Valve) is included with the Wet Sweep Bypass Option and is mounted to the left To Port 2 of the Main Control Valve...
  • Page 53 Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Disconnect the from the Electrical Connectors . Note that you may need to cut Shaker Motor Electrical the wire tie holding the wires to the filter Connectors (2) clamp weldment to do this.
  • Page 54 Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Method “C” a. Vacuum any loose dust from the filter. b. Soak the filter in warm water for 15 minutes, then rinse it under a gentle stream of water (maximum pressure 40 psi).

  • Page 55: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Troubleshooting Problem Cause Correction Dust not being Vacuum leak(s) due to: • Check the panel filter and gasket and replace as removed effectively necessary. • Damaged panel filter or from the air.

  • Page 56: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Dust Control System Specifications Component Specifications Dust Control Vacuum Fan Motor Displacement – 0.00149 gal/rev; 0.3442 CIR Voltage – 12 volts Main Broom Solenoid (2) Valve Nominal Coil Resistance – 7.2 Ohms Dust Control Solenoid (1) Valve Initial current draw –...

  • Page 57: Electrical System

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Functional Description Overview The electrical system consists of the switches, gauges and relays on the instrument panel, the circuit breakers, the drive pedal proximity sensors and the battery. Note that the hydraulic solenoid valves and engine electrical components are described in the corresponding sections of this manual.

  • Page 58: Foot Pedal Proximity Switches

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Foot Pedal Proximity Switches are proximity sensors Foot Pedal Proximity Switches that actuate the forward and reverse relays (R4 and R3 respectively). The forward and reverse relays enable and Foot...

  • Page 59: Electrical Ladder Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagrams Note: Later models introduced an additional relay “R6 Power Relay” around April 2017. The Rev B diagram is for models without the R6 relay. The Rev C diagram is for models with the R6 relay.
  • Page 60 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.

  • Page 61: Electrical Ladder Diagram, P/N 56382653, Rev. B

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagram, p/n 56382653, Rev. B, Page 3 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.

  • Page 62: Electrical Ladder Diagram, P/N 56382653, Rev. B

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagram, p/n 56382653, Rev. B, Page 4 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.
  • Page 63 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERT PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTAN DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WH AGREES TO RETURN IT UPON REQUEST.
  • Page 64 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagram, p/n 56382653, Rev. B, Page 6 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.
  • Page 65 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System CONFIDENT THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UN DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN Electrical Ladder Diagram, p/n 56382653, Rev.
  • Page 66 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System CONFIDENTIAL Electrical Ladder Diagram, p/n 56382653, Rev. C, Page 2 THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.
  • Page 67 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagram, p/n 56382653, Rev. C, Page 3 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFIS PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT I DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS AGREES TO RETURN IT UPON REQUEST.
  • Page 68 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagram, p/n 56382653, Rev. C, Page 4 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.
  • Page 69 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System CONFIDEN THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER T AGREES TO RETURN IT UPON REQUEST.
  • Page 70 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Electrical Ladder Diagram, p/n 56382653, Rev. C, Page 6 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.

  • Page 71: Engine Harness - Gm 3.0L Gas, P/N 56380222

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Engine Harness - GM 3.0L Gas, p/n 56380222...

  • Page 72: Engine Harness -Gm 3.0L Lpg, P/N 56380221

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Engine Harness -GM 3.0L LPG, p/n 56380221...

  • Page 73: Machine Harness Routing Diagram - Gas, Lp And Diesel

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Machine Harness Routing Diagram – Gas, LP and Diesel Weatherpack Connector, Weatherpack Two-way, Female Connector, Two-way, Male Hopper Wire Assembly Hopper Harness Machine Harness Diode Assembly Positive Negative Battery Note: These (3) Wires Must Exit Main...

  • Page 74: Engine System (Common)

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Engine System (common)

  • Page 75: Engine Frame Side System - Mitsubishi Diesel

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Engine Frame Side System – Mitsubishi Diesel...

  • Page 76: Engine Frame Side System - Gm Gas

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Engine Frame Side System – GM Gas...

  • Page 77: Engine Frame Side System - Gm Lpg

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Engine Frame Side System – GM LPG...

  • Page 78: Scrub System Electrical System

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Scrub System Electrical System Scrub System Electrical Components Part Number...

  • Page 79: Shaker Motor And Hopper Electrical System

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Shaker Motor and Hopper Electrical System Electrical Components Part Number...

  • Page 80: Squeegee And Vacuum Fan Motor Electrical System

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Squeegee and Vacuum Fan Motor Electrical System Electrical Components Part Number...
  • Page 81 Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Instrument Harness 0795-186 Rev G LEGEND REPRESENTS WIRE TIES ALL BLACK WIRE IMPRINTED W/WHT LETTERING REPRESENTS HARNESS NOT WIRE TIED INSULATED RING TERM---------10R= FND1614-5 BRAID 2RED/1YEL/BLACK 1/4R= FVD1614-6 LABEL ALL CONNECTORS AS MARKED...

  • Page 82: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Component Locations Battery sits on the Battery swing-out Battery Access . To access the U-clip Door Battery flip the seat over, rotate and swing open Battery U-clip Battery Access Door...

  • Page 83: Instrument Panel

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Instrument Panel The gauges, lights and switches are mounted to the instrument panel. Water Temperature Scrub Brush Voltmeter Gauge Lift Switch Main Low LP Broom Squeegee Indicator Switch Blade Switch...

  • Page 84: Foot Pedal Proximity Switches

    Service Manual – Advance 7765 / Nilfisk CR1500 Electrical System Foot Pedal Proximity Switches (sensors) Foot Pedal Proximity Switches are mounted adjacent to the bottom section of the , underneath the Foot Pedal Foot Pedal floor of the Operator compartment.

  • Page 85: Engine System, Diesel

    Functional Description Overview The diesel 7765/CR1500 machines use a Mitsubishi four-cylinder diesel engine to power the two hydraulic pumps that run the machine drive wheel, scrub/sweep systems, vacuum fan motor, the scrub/sweep and squeegee lift actuators and the steering system. A Bosch throttle type fuel injection pump controls the fuel quantity to maintain the selected RPM or shut the engine off.

  • Page 86: Circuit Description

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Circuit Description • For the engine to start: – The must provide positive voltage to the terminal on the Ignition Switch Ignition 14-pin Engine Harness , and to the...
  • Page 87 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Exhaust Spacer Thermoswitch Engine Serial Alternator Number Pressure Switch Crankshaft Pulley Flywheel Filter Right Side...
  • Page 88 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Fuel Starter Filter Solenoid Murphy Relay Fuel Pump Glow Plug Relay...
  • Page 89 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Starter Relay...

  • Page 90: Maintenance And Adjustments

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the parking brake is engaged, key switch is off and the key is removed from the machine.

  • Page 91: Replacing Engine Coolant

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Replacing Engine Coolant One possible cause of engine overheating is trapped air in the cooling system. It’s recommended that you use a Cooling System Tool when changing the engine coolant. The Cooling System Tool pulls a vacuum on the cooling system prior to filling to prevent air from being trapped in the cooling system.

  • Page 92: Engine Air Filter Maintenance

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Engine Air Filter Maintenance Check the engine air Filter Service Indicator before each use of the machine. Do not service the air filter unless the red flag is visible in the service indicator.

  • Page 93: Engine Overheating Problems

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Problem Cause Correction The engine will not The Murphy relay is not • Check the wiring to the Murphy relay, and from the start (continued). sending voltage to the fuel Murphy relay to the fuel pump (wire H) and correct pump.

  • Page 94: Loss Of Oil Pressure Protection

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Loss of Oil Pressure Protection When the oil pressure switch senses that the oil pressure has dropped below the minimum acceptable pressure, it grounds out wire 6 to the Murphy relay. After 30 seconds the Murphy relay switches off the voltage to the fuel pump to stop the engine.

  • Page 95: Special Tools

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Diesel Mitsubishi S4Q2 Diesel Type Force Feed Engine Oil API Service Classification CC Lubrication System Oil Pan – 1.8 US gallons [7 L] Engine Oil Capacity Complete System – 2.1 US gallons [8 L]...

  • Page 96: Engine System, Gasoline/Lpg

    Functional Description Overview The gasoline (petrol) and LPG 7765/CR1500 machines use a four-cylinder 3.0L GM engine to power the two hydraulic pumps that run the machine drive wheel, scrub brushes, squeegee vacuum fan motor, side and main brooms, steering system, and the scrub deck and squeegee deck lift cylinders. Gasoline engines use fuel injectors.

  • Page 97: Circuit Description

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Circuit Description • For the engine to start: – The must provide positive voltage to the terminal on the Ignition Switch Ignition 14-pin Engine Harness Connector – The (start) terminal on the...

  • Page 98: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Component Locations LPG and Gasoline ECT (Engine Coolant Temperature) Sensor Engine Coolant Switch...
  • Page 99 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Engine Fuse Box Ignition Coil and Ignition Module Ignition Ignition Coil Module Cam Sensor Engine Control Module...
  • Page 100 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Oil Pressure Sensor Ground Connection...
  • Page 101 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Temperature/Manifold Absolute Pressure (TMAP) Sensor Crank Position Sensor Upstream (Pre-CAT) O Sensor Downstream (Post-CAT) O Sensor (shown on machine)

  • Page 102: Lpg

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG LP Vaporizer/Regulator, LP Safety Lock-out Solenoid LP Safety Lock-out Solenoid LP Vaporizer/ Regulator...
  • Page 103 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Direct Electronic Pressure Regulator (DEPR) and Air/Fuel Mixer Air/Fuel Mixer Direct Electronic Pressure Regulator (DEPR) Electronic Throttle...

  • Page 104: Gasoline

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Gasoline Fuel Fuel Fuel Supply Line Pressure Fuel Injector (4) Connection Test Port Rail Electronic Throttle...

  • Page 105: Firing Order And Plug Wire Routing

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Firing Order and Plug Wire Routing 7“ 9½“ 12½“ 8½“ Firing Order: 1-3-4-2 To Coil Primary To Coil Secondary Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged.

  • Page 106: Engine Coolant

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Engine Coolant Checking Engine Coolant Caution! Do not remove the radiator cap when the engine is hot. To check the engine coolant level, open the engine cover and observe the coolant level in the coolant overflow tank.

  • Page 107: Engine Air Filter Maintenance

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Continue to hold the Cooling System Tool onto the radiator filler neck and Gauge open the to allow coolant Coolant Valve to flow into the radiator. Coolant Once the pressure on the...

  • Page 108: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Troubleshooting Note: Also refer to the PSI Tier 3 Certified Mobile Diagnostic and Troubleshooting Manual, publication number PSITIER3 - G, for additional troubleshooting information and procedures. General Troubleshooting Problem...

  • Page 109: Loss Of Oil Pressure Protection

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Loss of Oil Pressure Protection The engine will shut down if the oil pressure drops below 6 psi at 1000 RPM, or below 18 psi at 2000 RPM. Check for possible causes for low oil pressure such as: •...
  • Page 110 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Note that the minimum system requirements for the software in the Diagnostic Communications Cable and Software Kit are as follows: • Windows XP, 2000 or 98SE (Second Edition) operating system ®...

  • Page 111: To Access The Engine Dtc Error Codes Manually

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG To Access the Engine DTC Error Codes Manually You can access the engine DTC (diagnostic test code) error codes manually without using a Controller Interface Kit and PC. The...

  • Page 112: Diagnostic Trouble Code (Dtc) Chart - Sorted By Dtc Number

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Diagnostic Trouble Code (DTC) Chart – Sorted by DTC Number...
  • Page 113 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG...
  • Page 114 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG...
  • Page 115 Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG...

  • Page 116: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Specifications Engine Specifications 3.0 L GM Vertical, liquid cooled, four-cylinder, push rod actuated Engine type overhead valve, solid-state distributor Displacement 181 cubic inches (2966 cc) Compression Ratio 9.2:1 87 or 89 octane unleaded gasoline with no more than...

  • Page 117: Special Tools

    Service Manual – Advance 7765 / Nilfisk CR1500 Engine System, Gasoline/LPG Special Tools Diagnostic Communication Cable and software, p/n 56305647 Cooling System Tool...

  • Page 118: Hopper System

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Functional Description Overview The hopper system holds the dust and debris swept up by the brooms. There are two different hopper configurations; a manual dump (MD) hopper and a variable dump (VD) hopper.

  • Page 119: Hopper - Variable Dump Machines

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Hopper – Variable Dump Machines Variable Dump pivots on the Hopper supported by the frame. Hopper Lift Cylinder swings the Variable Dump up to allow it to be Variable Hopper...
  • Page 120 Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System The hydraulic valves that control the are mechanically Hopper Lift Cylinder Hopper Dump Cylinder actuated by the and the respectively. connect the Hopper Lift Lever Hopper Dump Door Lever Links...

  • Page 121: Hopper System Wiring Diagram - Variable Dump Machine

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Hopper System Wiring Diagram – Variable Dump Machine Battery 12 VDC Ignition Bat. Switch Shaker Motor Switch Shaker Relay Hopper Switch Hopper Door Switch Option N.O. N.O. 15 A (Held Closed by Hopper)

  • Page 122: Hopper System Hydraulic Diagrams - Variable Dump Machine

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Hopper System Hydraulic Diagrams – Variable Dump Machine Hopper Control Valves in Neutral Position Hopper Control Valve Hopper Dump Cylinder Valve Hopper Lift Lift Cylinder Cylinder Valve Cooler Dump Cylinder...

  • Page 123: Lift Hopper

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Lift Hopper Hopper Control Valve Hopper Hopper Dump Down Lift Cylinder Valve Hopper Hopper Lift Lift Cylinder Cylinder Valve Close Door Open Door Cooler Dump Cylinder From Scrub Brush Motors...

  • Page 124: Lower Hopper

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Lower Hopper Hopper Control Valve Hopper Hopper Dump Down Lift Cylinder Valve Hopper Hopper Lift Lift Cylinder Cylinder Valve Close Door Open Door Cooler Dump Cylinder From Scrub Brush Motors...

  • Page 125: Open Hopper Dump Door

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Open Hopper Dump Door Hopper Control Valve Hopper Hopper Dump Down Lift Cylinder Valve Hopper Hopper Lift Lift Cylinder Cylinder Valve Close Door Open Check Door Valve w/Pilot Cooler Dump Cylinder...

  • Page 126: Close Hopper Dump Door

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Close Hopper Dump Door Hopper Control Valve Hopper Hopper Dump Down Lift Cylinder Valve Hopper Hopper Lift Lift Cylinder Cylinder Valve Close Door Open Door Cooler Dump Cylinder From Scrub...

  • Page 127: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Component Locations The following components are included in this section: • Hopper Lift Cylinder • Hopper Dump Door Cylinder • Hopper Switch and Hopper Door Switch • Hopper Control Valve...

  • Page 128: Lubrication Points

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System is mounted on the frame Hopper Control Valve to the right of the hydraulic pumps. The Links connect to the two individual valves to the hopper lift lever and hopper dump door lever.
  • Page 129 Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System • The connecting Pins Collars Hopper Dump Door Cylinder to the Hopper Dump Door hopper yoke. Collar (2) Hopper Hopper Dump Dump Door Door Cylinder • The . Note Hopper Pivot Points...
  • Page 130 Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System • The four hopper rod Grease Fittings Grease Grease Fittings Fittings Warning! Never work under the hopper without first engaging the Safety Lock Arm. Safety Lock Arm (shown in engaged position)

  • Page 131: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Hopper System Troubleshooting Problem Cause Correction Hopper not rising The hopper lift cylinder valve Check the hopper lift cylinder valve and repair/ when the hopper lift in the hopper control valve replace as necessary.

  • Page 132: Hydraulic System

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Functional Description Overview The hydraulic system powers the drive wheel motor, scrub brushes, vacuum fan, main broom, and side broom (if the machine is so equipped). The hydraulic system also actuates the scrub deck and squeegee deck cylinders, hopper lift and hopper door cylinders (VD machines only), and the power steering unit and power steering cylinder.

  • Page 133: Hydraulic Valves

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System • The is a Auxiliary Pump multiple-gear pump. Two separate 1.02 CIR output ports power the other machine From Reservoir systems. Note that the gas and diesel fitting configurations are...

  • Page 134: Return Block/Manifold

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System • The Cylinder Control controls the Valve oil flow to the scrub deck cylinder and squeegee deck cylinder. Cylinder Control Valve To Lower Port on Squeegee Deck Cylinder To Upper Port on Scrub...

  • Page 135: Electrical Schematic

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Electrical Schematic Battery 12 VDC Ignition Bat. Switch Acc. Hopper Switch Hopper Door Switch Option N.O. N.O. 15 A (Held Closed by Hopper) (Held Closed by Door) Dust Control Switch...

  • Page 136: Hydraulic Schematics

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Hydraulic Schematics Squeegee Deck Side Cylinder Variable Dump Machine Broom Cylinder Valve Control Squeegee Valve Lock Up (10) 1.93 Hopper Squeegee Control Cylinder Side Broom Hopper Dump Valve Solenoid (7) Cylinder Valve Motor Scrub...

  • Page 137: Manual Dump Machine

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Manual Dump Machine Squeegee Deck Side Cylinder Broom Cylinder Valve Control Squeegee Valve Lock Up (10) 1.93 Squeegee Cylinder Side Broom Solenoid (7) Motor (optional) Scrub Deck Cylinder Scrub Brush Solenoid (6) 2200 Squeegee...

  • Page 138: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Component Locations The following components are included in this section: • Hydraulic Pumps • Hydraulic Reservoir • Oil Filter • Oil Cooler • Main Control Valve • Cylinder Control Valve •...
  • Page 139 Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System is located to the right Hydraulic Oil Reservoir of and below the Operator seat. A Fluid Level shows the oil level in the Sight Gauge Hydraulic Oil Clogging Indicator Reservoir...
  • Page 140 Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System is mounted to the rear of the engine Oil Cooler Radiator Radiator Cooler is mounted on the underside of the machine, in front of and to the left of the scrub Main Control Valve deck.
  • Page 141 Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Cylinder Control Valve located below the access panel on the floor of the Operator Scrub Brush Scrub Brush Solenoid (6) Solenoid (8) compartment. Squeegee Lock Up Solenoid (10) Cylinder Control Valve...

  • Page 142: Maintenance And Adjustments

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged.

  • Page 143: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Troubleshooting General Troubleshooting Problem Cause Correction General poor Low oil hydraulic level. Check the oil level in the reservoir hydraulic and add oil as necessary. performance. Hydraulic oil temperature too high.

  • Page 144: Checking Nominal Pressure Readings

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Checking Nominal Pressure Readings Note: There are two #8 Flat Face O-ring Fittings on the that can be used to Auxiliary Auxiliary Pump Pump check the pressure from both sides of the . Checking the hydraulic Auxiliary Pump...

  • Page 145: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Specifications General Specifications Component Specifications System Capacity – 16.5 gal. [62.46 L] Capacities Reservoir Capacity – 6 gal. [22.7 L] Fluid Type Mobil Multi Purpose ATF or equivalent Dexron III fluid Type –...

  • Page 146: Scrub Deck Hydraulic Specifications

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Scrub Deck Hydraulic Specifications In Neutral Forward or Reverse Forward Scrub Brush Rotation Reverse Scrub Brush Rotation Scrub Deck Raised Scrub Deck Raised Scrub Deck Normal Down Scrub Deck Heavy Down Scrub Deck Normal Down Scrub Deck Heavy Down Hose...

  • Page 147: Steering Circuit Hydraulic Specifications

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Steering Circuit Hydraulic Specifications Steering Only: Stationary Locked Full Locked Full Clockwise Neutral/Center Counterclockwise Hose Location Pressure Flow Pressure Flow Pressure Flow 7-33-02191 Power Steering Unit “T” Port 400 PSI 1.4 GPM 380 PSI 1.4 GPM...

  • Page 148: Main Broom Hydraulic Specifications - Gm Engines

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Main Broom Hydraulic Specifications – GM Engines With Hopper Valves in “Neutral” Main Broom Only ON Hose Location Pressure Flow 8-33-02214 Main Broom Motor Inlet from Main Control Valve “1” Port 970 PSI 420 RPM 8.25 GPM...

  • Page 149: Dust Control System Hydraulic Specifications - Gm Engines (Variable Dump Models)

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Dust Control System Hydraulic Specifications – GM Engines (Variable Dump Models) With Hopper Valves in “Neutral” Main Broom On Dust Control On Dust Control Off Hose Location Pressure Flow Pressure Flow Dust Control Motor Inlet...

  • Page 150: Squeegee System Hydraulic Specifications - Gm Engines

    Service Manual – Advance Condor™ XL, Nilfisk ER 1300/1600 Hydraulic System Squeegee System Hydraulic Specifications – GM Engines Squeegee Raised Squeegee Lowered Reverse Hose Location Pressure Flow Pressure Flow Pressure Flow 7-33-02225 Cylinder Control Valve “T” port < 50 PSI 1.4 GPM <...

  • Page 151: Main Control Valve Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Note: The cylinder Pressures and Flow rates on the preceding pages are with the hopper stabilized and at rest. Peak relief pressure is 2500 psi. The pressure while raising the hopper will depend on the weight of the hopper. If the hopper dump door cylinder or hopper lift cylinder is fully-extended or retracted (dump door only) and the lever is not returned to the neutral position, the pressure will go to the relief setting of 2500 psi. Main Control Valve Specifications Main Control Valve Component Component Description Hydraulic Circuit Function 2500 psi [172.4 bar] Relief Valve...

  • Page 152: Cylinder Control Valve Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Cylinder Control Valve Specifications Cylinder Control Valve Component Component Description Hydraulic Circuit Function A solenoid-operated, two-way, normally closed, Scrub Brush Lock Up Solenoid (9) poppet-type, screw-in hydraulic cartridge valve A solenoid-operated, three-way, direct-acting, spool-...

  • Page 153: Special Tools

    Service Manual – Advance 7765 / Nilfisk CR1500 Hydraulic System Special Tools Hydraulic test gauge w/connector, 3000 PSI range, p/n 56504516 Flow Meter – rated at 3000 psi and 10 gal./min. (typical shown) Various hydraulic fittings required to connect hydraulic test gauge into...

  • Page 154: Recovery System

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Functional Description Overview The recovery system picks up the scrubbing solution from the floor and directs it into the recovery tank. The squeegee vacuum fan, driven by a hydraulic motor powered by the auxiliary pump, draws air from the recovery tank to create a vacuum in the tank and at the squeegee to pick up the solution.

  • Page 155: Recovery Tank - Esp/Recycle System

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System will actuate the Recovery High (Float) Switch High Recovery Warning Light approximately five minutes before the recovery tank is full to allow time to complete the scrubbing cycle before the float ball shuts off the vacuum to the recovery tank.

  • Page 156: Vacuum Motor/Fan Assembly

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Vacuum Motor/Fan Assembly The hydraulic drives Vacuum Motor that spins in the Impeller Fan Duct to create the vacuum in the recovery Solenoid tank. Valve Vacuum Motor and fan assembly...

  • Page 157: Recovery System Wiring Diagram - Standard Recovery System

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Recovery System Wiring Diagram – Standard Recovery System Battery 12 VDC Ign. Ignition Bat. Switch Acc. Squeegee Blade Switch 15 A Squeegee Fan Motor Solenoid (12) Reverse Relay High Recovery...

  • Page 158: Recovery System Hydraulic Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Recovery System Hydraulic Diagrams Squeegee Vacuum Fan Off When the Squeegee is off, Vacuum Motor Squeegee Fan Motor 2200 Squeegee Squeegee is energized. Vacuum Fan Motor Solenoid (12) 0.151 Relief...

  • Page 159: Squeegee Vacuum Fan Stalled

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Squeegee Vacuum Fan Stalled If the Squeegee Vacuum stalls, the Motor 2200 PSI opens to allow Relief Valve 2200 Squeegee Squeegee the oil to flow through Vacuum Fan Motor 0.151...

  • Page 160: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Component Locations The following components are included in this section: Also refer to the section. Solution System • Recovery Tank • Recovery Tank Lid • Drain Plug Assembly • Recovery High (Float) Switch •...
  • Page 161 Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System can be removed to Drain Plug Assembly drain the through the Recovery Tank Drain Hose The red will Recovery High (Float) Switch actuate the High Recovery Warning Light Drain Plug...
  • Page 162 Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System are mounted Vacuum Motor Fan Assembly on the . The Recovery Tank Lid Recovery Tank Lid Float Ball Float Ball swings open to allow access to the Strap Float Ball...

  • Page 163: Maintenance

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Maintenance Warning! Before performing any machine maintenance, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Daily Maintenance • Check the gasket on the recovery tank cover for damage/wear.

  • Page 164: Vacuum Test

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Problem Cause Correction Squeegee vacuum Circuit breaker CB8 is Reset the circuit breaker. fan motor not tripped. running. Squeegee fan motor • Check the wiring from the Squeegee Blade Switch solenoid valve not operating to the fan motor solenoid valve.

  • Page 165: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Recovery System Specifications Component Specifications Displacement – 0.000652 gal/rev; 0.151 CIR Max. Pressure – 1500 psi [103.4 bar] Squeegee Vacuum Fan Motor Max. Speed – 4000 RPM Relief Valve – 2200 psi [151.7 bar] Vacuum Water Lift (Sealed) 30”...

  • Page 166: Scrub System

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Functional Description Overview The scrub system includes the scrub deck, the three hydraulic scrub brush motors, the scrub deck hydraulic cylinder that lowers and raises the deck, and the associated hydraulic solenoid valves. One of the 1.02 CIR auxiliary pumps powers the scrub brush motors.

  • Page 167: Scrub Brush Motor Control Valves

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Brush Motor Control Valves Normal Rotation Brush Reverse Normal Rotation Rotation Brush (3) Reverse Brush (4) solenoid valves on Rotation Brush (3) Main Control control the Valve hydraulic oil to...

  • Page 168: Scrub Deck Hydraulic Cylinder And Control Valves

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Deck Hydraulic Cylinder and Control Valves lowers and Scrub Deck Hydraulic Cylinder raises the scrub deck. Scrub Brush Solenoid (6) in the Scrub Brush Solenoid (8) Cylinder Control raise and lower the scrub deck and control Valve the two scrub pressures.

  • Page 169: Scrub System Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub System Wiring Diagram Battery 12 VDC Ignition Bat. Switch 15 A Forward Relay Drive Pedal Forward Sensor Scrub Brush Solenoid (6) Raise Brush Pressure Switch Scrub Brush Solenoid (8)

  • Page 170: Scrub Deck Cylinder

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Deck Cylinder in the cylinder Scrub Brush Solenoid (6) Scrub Brush Solenoid (8) Scrub Brush Lock Up Solenoid (9) control valve control the scrub deck hydraulic cylinder to lower and raise the scrub deck, and determine which of the two scrub pressures is used.
  • Page 171 Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub System Hydraulic Diagrams Scrub Brush Motors Off To Hopper Control Valve 10.0 10.0 10.0 Scrub Brush Motors Return Block Reverse Rotation Brush (3) Dust 0.34 Control Motor Normal Rotation...
  • Page 172 Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System To Hopper Control Valve 10.0 10.0 10.0 Scrub Brush Motors Return Block Reverse Rotation Brush (3) Dust 0.34 Control Motor Normal Rotation Brush (4) Main 4.50 Broom Motor To Side...

  • Page 173: Scrub Brush Motors On

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Brush Motors On To Hopper Control Valve 10.0 10.0 10.0 Scrub Brush Motors Return Block Reverse Rotation Brush (3) Dust 0.34 Control Motor Normal Rotation Brush (4) Main 4.50...
  • Page 174 Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System To Hopper Control Valve 10.0 10.0 10.0 Scrub Brush Motors Return Block Reverse Rotation Brush (3) Dust 0.34 Control Motor Normal Rotation Brush (4) 4.50 Main Broom To Side Motor...

  • Page 175: Scrub Brush Motors Running In Reverse

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Brush Motors Running in Reverse To Hopper Control Valve 10.0 10.0 10.0 Scrub Brush Motors Return Block Reverse Rotation Brush (3) Dust 0.34 Control Motor Normal Rotation Brush (4) 4.50...

  • Page 176: Scrub Deck Down At Normal Scrub Pressure

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Deck Down at Normal Scrub Pressure To and From Squeegee Hydraulic Deck Cylinder Power Steering Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Squeegee Check Valve Unit...

  • Page 177: Scrub Deck Down At High Scrub Pressure

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Deck Down at High Scrub Pressure To and From Squeegee Hydraulic Power Steering Deck Cylinder Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Squeegee Check Valve Unit...

  • Page 178: Scrub Deck Up

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Deck Up To and From Squeegee Hydraulic Power Steering Deck Cylinder Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Squeegee Check Valve Unit Scrub 270 PSI Cylinder...

  • Page 179: Scrub Deck Up With Engine Shut Off

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Deck Up with Engine Shut Off To and From Squeegee Hydraulic Power Steering Deck Cylinder Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Squeegee Check Valve Unit...

  • Page 180: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Component Locations The following components are included in this section: • Scrub Deck and Hydraulic Scrub Motors • Scrub Deck Hydraulic Cylinder • Main Control Valve • Cylinder Control Valve...
  • Page 181 Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Normal Rotation Brush (4) solenoid Reverse Rotation Brush (3) valves are part of the Main Control . The Valve Main Control Valve mounted on the underside of the Port 3 machine, in front of and to the left of the scrub deck.

  • Page 182: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Scrub Brush Solenoid (6) Scrub Brush Solenoid (8) Scrub Brush are part of the Scrub Brush Scrub Brush Lock Up Solenoid (9) Solenoid (6) Solenoid (8) located below Cylinder Control Valve the access panel on the floor of the Operator compartment.
  • Page 183 Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Problem Cause Correction Scrub deck will not No voltage to the Scrub 1. Check circuit breaker CB7 and reset if necessary. extend downward Brush Lock Up Solenoid 2. Check the wiring from CB7 to the Scrub Brush...

  • Page 184: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Problem Cause Correction Scrub deck not Scrub Brush Solenoid (6) 1. Check the coil resistance of the Scrub Brush being raised to the not opening when energized Solenoid (6). If the coil resistance is not 9.8 ohms retracted position.

  • Page 185: Special Tools

    Service Manual – Advance 7765 / Nilfisk CR1500 Scrub System Special Tools Hydraulic test gauge w/connector, 3000 psi range, p/n 56504516...

  • Page 186: Solution System

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Functional Description The solution system directs and regulates the solution flow from the solution tank to the scrub brushes. Overview – Standard Solution System On machines not equipped with the ESP/Recycle...

  • Page 187: Solution Tank

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Solution Tank The standard Solution Tank holds 100 gallons [379 liters] of solution which is gravity-fed through the ball valve to the scrub Tee-handle brushes. Solution Tank filters the Inlet Strainer...

  • Page 188: Solution Flow Control

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Solution Flow Control , located to the left Solution Control Lever of the Operator, pivots to move the Solution up and down. The Control Link Solution Control rotates the lever arm on the...

  • Page 189: Overview - Esp/Recycle Option

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Overview – ESP/Recycle Option On machines equipped with the ESP/Recycle Solution Recovery Solution option, wastewater Pump Tank Tank is pumped from Detergent Recovery Tank Tank to the Solution Tank to be recycled to...

  • Page 190: Detergent And Solution Tanks

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Detergent and Solution Tanks is mounted Detergent Tank in the and supplies Solution Tank detergent to the Detergent Pump in the Detergent Low Switch will light the Detergent Tank warning light on the...

  • Page 191: Solution Off In Neutral Option

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Solution Off in Neutral Option The Solution Off in Neutral Option includes a Solenoid 90° Nipple on between the Valve Tee Fitting Solution Water Feed from the Hose solution tank and 90°...

  • Page 192: Power Spray Wand (Optional)

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Power Spray Wand (optional) The optional Power Spray Wand uses a separate 12-volt to pump solution through the solution Water Pump hose on the to the mounted on the . The...

  • Page 193: Standard Solution System Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Standard Solution System Wiring Diagram Battery 12 VDC Ign. Ignition Bat. Switch Acc. 15 A Low Solution Warning Light Solution Low Switch Circuit Description The only electrical circuit on the standard Solution System is the wiring and...

  • Page 194: Esp/Recycle Option Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System ESP/Recycle Option Wiring Diagram ESP On/Off ESP Pump Switch LS-DMP Switch Detergent Pump 9B 1 Rheostat Detergent Switch Detergent Low Light Low Switch Solution Solution High Light High Switch Circuit Description •...

  • Page 195: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Component Locations The following components are included in this section: • Solution Tank • Solution Low Switch • Drain Hose and Hose Holder • Solution Control Lever • Ball Valve •...
  • Page 196 Service Manual – Advance 7765 / Nilfisk CR1500 Solution System swing out Hose Holder Drain Hose from the side of the machine to free the when draining the solution Drain Hose tank. Drain Hose Hose Holder , to the left of the Operator, actuates the...
  • Page 197 Service Manual – Advance 7765 / Nilfisk CR1500 Solution System is located above the scrub Ball Valve deck and is actuated by Solution Control Ball connected to the solution control Valve Link lever. To access the , remove the Ball Valve...

  • Page 198: Esp/Recycle Option

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System ESP/Recycle Option is mounted on the machine chassis and pumps ESP Pump filtered solution from the recovery tank to the solution tank. ESP Pump is mounted on the side of the machine chassis Detergent Pump and supplies detergent to the solution line.
  • Page 199 Service Manual – Advance 7765 / Nilfisk CR1500 Solution System (liquid level Detergent Low Switch switch) is mounted inside the detergent tank and switches on the Low Detergent light on the instrument panel when the detergent level is low. Detergent...

  • Page 200: Maintenance

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Maintenance Warning! Before performing any machine maintenance, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged. Solution Tank To clean the solution tank: Lift the solution tank lid (cover).
  • Page 201 Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Problem Cause Correction No solution being Recycling System ON/OFF Set the Recycling System ON/OFF switch to ON. transferred from the switch is set to OFF. recovery tank to the Solution inlet filter dirty or Clean or replace the filter.

  • Page 202: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Solution System Specifications Component Specifications Component Specifications Solution Tank 100 gal. [379.L] capacity Voltage – 12 VDC, continuous duty Solution Solenoid Valve (Solution Power Consumption – 11 Watts Off in Neutral option only) Coil Resistance –...

  • Page 203: Squeegee System

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Functional Description Overview The squeegee system includes the rear squeegee assembly, swing squeegee support, squeegee lift assembly, squeegee deck cylinder and the associated solenoid valves. The rear squeegee assembly is mounted at the bottom rear of the machine and picks up the water from the floor.

  • Page 204: Swing Squeegee Support

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Swing Squeegee Support on the Squeegee Arms swing squeegee support form parallel linkages that connect the Rear Pin on the Weldments Squeegee Support Weldment Squeegee Supports Vacuum Right These linkages allow the...

  • Page 205: Squeegee Lift Assembly And Squeegee Deck Cylinder

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Squeegee Lift Assembly And Squeegee Deck Cylinder extends Squeegee Deck (Lift) Cylinder and retracts to pivot the Squeegee Lift Arm down and up. raises and lowers Squeegee Lift Arm attached to the...

  • Page 206: Squeegee Deck Cylinder And Control Valves

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Squeegee Deck Cylinder and Control Valves The top port on the Squeegee Deck Cylinder connected to the on the C3 Port Cylinder Control To C3 Port . The bottom port on the...

  • Page 207: Squeegee System Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Squeegee System Wiring Diagram Battery 12 VDC Ignition Bat. Switch 15 A Squeegee Lock Up (10) 15 A Raise (Traverse) Squeegee Squeegee Fan Motor Solenoid (12) Blade Switch 15 A...

  • Page 208: Squeegee System Hydraulic Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Squeegee System Hydraulic Diagrams Squeegee Up, Key Switch Off Squeegee Deck Power Steering Cylinder Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Unit Check Valve Squeegee Squeegee 270 PSI...

  • Page 209: Squeegee Up, Engine Running

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Squeegee Up, Engine Running Squeegee Deck Power Steering Cylinder Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Unit Squeegee Check Valve Squeegee Cylinder 270 PSI Solenoid (7) Scrub Brush...

  • Page 210: Squeegee Down, Engine Running

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Squeegee Down, Engine Running Squeegee Deck Power Steering Cylinder Cylinder Squeegee Cylinder Lock Up (10) Control Valve Power Steering Unit Squeegee Check Valve Squeegee Down Cylinder 270 PSI Solenoid (7)

  • Page 211: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Component Locations The following components are included in this section: • Rear Squeegee Assembly • Swing Squeegee Support • Squeegee Lift • Cylinder Control Valve is mounted to Rear Squeegee Assembly...
  • Page 212 Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System The squeegee lift includes the Squeegee Deck (Lift) . The Cylinder Squeegee Lift Arm Squeegee Deck is attached to the machine frame on (Lift) Cylinder the upper right rear of the machine, behind the battery.

  • Page 213: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Troubleshooting General Troubleshooting Problem Cause Correction Poor Water Pick-up. The squeegee blades are Check and replace the blades as necessary. torn or worn. The squeegee assembly is Readjust the squeegee. (Refer to the Instructions for out of adjustment.

  • Page 214: Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Squeegee System Specifications Component Specifications Squeegee Lock Up (10) Initial Current – 1.22 amps Solenoid Valve Squeegee Cylinder Nominal Coil Resistance – 7.2 ohms Solenoid (7) Valve...

  • Page 215: Steering System

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Functional Description Overview The steering system includes the power steering unit, Power Power Steering Cylinder Rack Steering Spur Gear Cylinder The steering wheel rotates the shaft on the power steering unit which...
  • Page 216 Service Manual – Advance 7765 / Nilfisk CR1500 Steering System is mounted to the Power Steering Unit Steering Weldment Housing Steering and is driven by the Column Assembly Steering Steering Wheel Wheel Power Steering Unit Steering Column Assembly Steering Weldment...

  • Page 217: Hydraulic Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Hydraulic Diagrams Power Steering Unit Description uses the Power Steering Unit input from the steering wheel to turn the drive wheel in the appropriate Power Steering direction to steer the machine. When...

  • Page 218: Steering Wheel Turned Toward The Right

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Steering Wheel Turned Toward the Right When the Operator turns the steering wheel to the right, the directs Valve the hydraulic oil to the corresponding Power Steering side of the...

  • Page 219: Steering Wheel Turned Toward The Left

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Steering Wheel Turned Toward the Left When the Operator turns the steering wheel to the left, the directs the hydraulic oil to Valve Power Steering the opposite side of the...

  • Page 220: Steering Wheel Held In Full Right Or Left Position

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Steering Wheel Held in Full Right or Left Position When the steering wheel is held to the stop in its full-right or full-left turn position (full-right is shown here), opens up to allow the...

  • Page 221: Turning The Steering Wheel With The Engine Off

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Turning the Steering Wheel with the Engine Off When the engine is off and no hydraulic oil is being pumped to , the Power Steering Unit Gerotor Power Steering acts like a...

  • Page 222: Maintenance

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Maintenance Warning! Make sure the steering system and surrounding components are cool to the touch before attempting to grease the steering system lubrication fittings. Failure to observe this safety precaution can result in severe burns.

  • Page 223: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Steering System Troubleshooting Problem Cause Correction The steering Backlash in the spur gear Adjust the rack so it’s closer to the spur gear. “wanders”. and rack The steering is hard Not enough oil to the Check the pump output and correct as necessary.

  • Page 224: Sweep System, Main Broom

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Functional Description Overview The main broom sweep system includes the main broom and lift linkage, hydraulic broom drive motor and the main broom solenoid valve. One of the 1.02 CIR auxiliary pumps powers the broom drive motor.

  • Page 225: Main Broom Lift Linkage

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Main Broom Lift Linkage Moving the Main Broom Lift Control forward and backward Lever extends and retracts the Adjusting , which then rotates the Crank raises and lowers the...

  • Page 226: Main Broom Motor Control Valve

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Main Broom Motor Control Valve valve Main Broom Solenoid (2) in the supplies Main Control Valve hydraulic oil to the main broom and dust control motors from Port .

  • Page 227: Main Broom Sweep System Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Main Broom Sweep System Wiring Diagram Battery 12 VDC Ignition Bat. Switch Hopper Switch Hopper Door Switch N.O. N.O. 15 A Main Broom (Held Closed by Hopper) (Held Closed by Door)

  • Page 228: Main Broom Motor Off

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Main Broom Sweep System Hydraulic Diagrams Main Broom Motor Off To Normal Rotation Brush (4) From Dust Control Motor Return Block To Dust Control Motor Main 4.50 Main Broom...

  • Page 229: Main Broom Motor On

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Main Broom Motor On To Normal Rotation Brush (4) From Dust Control Motor Return Block To Dust Control Motor Main 4.50 Main Broom Broom Solenoid (2) Motor 9.7 GPM...

  • Page 230: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Component Locations The following components are included in this section: • Main Broom, Broom Drive Arm and Hydraulic Broom Drive Motor. • Main Broom Lift Linkage • Main Control Valve...
  • Page 231 Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom The lower portion of the main broom linkage consists of the . As the Crank Broom Lift Link pivots, it moves the Crank Broom Crank up and down to raise and Lift Link lower the main broom.
  • Page 232 Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom valve Main Broom Solenoid (2) is part of the Main Control Valve Main and controls the oil flow to the Control Valve main broom motor. The Main is mounted on the...

  • Page 233: Maintenance And Adjustments

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged.
  • Page 234 Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Main Broom Troubleshooting Problem Cause Correction Main broom motor Circuit breaker CB6 is Reset the circuit breaker. not running. tripped. No voltage to the Main • Check for continuity through the hopper and Broom Solenoid (2) valve.

  • Page 235: Sweep System, Side Broom

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom Functional Description Overview The side broom sweep system includes the Side Broom Cable Hydraulic Side Broom Motor Lift Side Broom Arm Weldment Knob , and the side broom Cable solenoid valve.

  • Page 236: Side Broom Sweep System Wiring Diagram

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom controls the oil flow to Side Broom Valve the hydraulic side broom motor. Side Broom Valve From P1 on Main Control Valve To “A” Port on Side Broom Motor...

  • Page 237: Side Broom Sweep System Hydraulic Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom Side Broom Sweep System Hydraulic Diagrams Side Broom Motor Off When the is off, the solenoid is de-energized (open). This allows the Side Broom Motor Side Broom Valve...

  • Page 238: Side Broom Motor On

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom Side Broom Motor On When the is on, the solenoid is energized. This forces the hydraulic oil to Side Broom Motor Side Broom Valve flow from the through priority leg of the priority flow divider, then through the...

  • Page 239: Component Locations

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom Component Locations The following components are included in this section: • Side Broom, Side Broom Motor and Side Broom Arm Weldment • Side Broom Valve are mounted Side Broom...

  • Page 240: Maintenance And Adjustments

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off, the key is removed from the machine and the parking brake is engaged.

  • Page 241: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Sweep System, Side Broom Troubleshooting General Troubleshooting Problem Cause Correction Side Broom motor Circuit breaker CB6 is Reset the circuit breaker. not running. tripped. No voltage to the Side • Check for continuity through the hopper and Broom Solenoid (5).

  • Page 242: Wheel System, Non-Traction

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Non-traction Functional Description The non-traction wheel system supports the front of the machine and includes the braking system. Five 1/2”-20 x 1.56 Studs fasten 1/2”-20 Lug Nuts to the Molded Wheels Brake Caliper .
  • Page 243 Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Non-traction When the Brake Pedal depressed it pivots the which pulls Brake Pedal Cross Shaft Clevis (2) the two toward Brake Rods the rear. The Brake Pedal on the Clevises...

  • Page 244: Maintenance And Adjustments

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Non-traction Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments, make sure the key switch is off and the key is removed from the machine. Service Brake Adjustment...

  • Page 245: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Non-traction Troubleshooting Problem Cause Correction The wheels are The wheel bearings are Check the wheel bearings and replace as required. making excessive worn. noise. The wheel and/or stub axle Check the wheel and stub axle weldment and weldment are damaged.

  • Page 246: Wheel System, Traction

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Functional Description Overview The traction wheel system includes the hydraulic drive wheel motor and drive pump, and the foot pedal and associated components that control the direction and speed of the drive wheel motor.

  • Page 247: Drive Pump After Machine Serial Number 1000034942

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Drive Pump After Machine Serial Number 1000034942 Drive Pump on machines after serial number 1000034942 is part From Squeegee Vacuum Fan number 56514943. New Location Motor of Case Drain...

  • Page 248: Forward/Reverse Controls - Gm Engines Before S/N 1000034942

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Forward/Reverse Controls – GM Engines Before s/n 1000034942 The foot pedal actuates the Forward/Reverse which rotates Cable Hydrostat . The Arm Plate Hydrostat Arm Plate Centering is fastened to the...

  • Page 249: Foot Pedal Assembly - Gm Engines

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Foot Pedal Assembly – GM Engines pivots on the Foot Pedal Foot to move the Pedal Mount Brackets forward and Forward/Reverse Cable backward. The Forward/Reverse actuates the forward/reverse Cable...

  • Page 250: Forward/Reverse Controls - Mitsubishi Diesel Engines Before S/N 1000034942

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Forward/Reverse Controls – Mitsubishi Diesel Engines Before s/n 1000034942 actuates Foot Pedal Forward/Reverse Cable which rotates the Shift Arm and attached Transmission Arm Plate Transmission Foot . The Arm Weldment...

  • Page 251: Forward/Reverse Controls - Mitsubishi Diesel Engines After S/N 1000034942

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Forward/Reverse Controls – Mitsubishi Diesel Engines After s/n 1000034942 actuates Foot Pedal Forward/Reverse Cable which connects to the . The Hydroback Hydroback transfers the Forward/ motion to the Reverse Cable...

  • Page 252: Rear Wheel And Rear Wheel Motor

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Rear Wheel and Rear Wheel Motor Rear Wheel (tire and outer rim) Rear Wheel is bolted to the Cotter Support Drive Wheel Hub The assembled Slotted Rear Wheel Drive Wheel Hub...

  • Page 253: Electrical Schematic

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Electrical Schematic Battery 12 VDC Ignition Bat. Switch 15 A Forward Relay Drive Pedal Forward Sensor Drive Pedal Reverse Sensor Reverse Relay Electrical Circuit Description The only electrical components associated with the traction wheel system are the Drive Pedal Forward Sensor .

  • Page 254: Hydraulic Diagrams

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Hydraulic Diagrams Rear Wheel Motor in Neutral When the foot pedal is in the neutral position with the engine running, the will not send any oil Drive Pump to the...

  • Page 255: Tow Valve In Bypass Position

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Tow Valve in Bypass Position When the engine is off, the acts like a hydraulic pump and makes it difficult to rotate the Rear Wheel Motor rear wheel. The machine is equipped with a...

  • Page 256: Rear Wheel Motor In Forward Or Reverse

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Rear Wheel Motor in Forward or Reverse When the engine is running and the foot pedal is moved to either the forward or reverse position, the Drive sends oil to the to drive the machine in the corresponding direction.

  • Page 257: Rear Wheel Motor Stalling Out

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Rear Wheel Motor Stalling Out If the is unable to run in forward or reverse for any reason (rear wheel stalled, etc.), the Rear Wheel Motor corresponding internal in the...

  • Page 258: Maintenance And Adjustments

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Maintenance and Adjustments Warning! Before performing any machine maintenance or adjustments (other than the Hydroback adjustment), make sure the key switch is off, the key is removed from the machine and the parking brake is engaged.

  • Page 259: Troubleshooting

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Troubleshooting Problem Cause Correction The machine The forward/reverse controls Adjust the forward/reverse controls and/or linkage so “creeps” forward or are out of adjustment. the machine is stationary when the foot pedal is in backward when the the neutral position.

  • Page 260: Wheel Drive System Torque Specifications

    Service Manual – Advance 7765 / Nilfisk CR1500 Wheel System, Traction Wheel Drive System Torque Specifications Description Torque Specification Steering Torque to 40 ft.- Steering Castle Castle lb. [54 Nm], then (Spindle) Nut (Spindle) Nut loosen to align cotter pin.

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