Toro Pro Force 44552TE Service Manual
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Toro Pro Force 44552TE Service Manual

Debris blower
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© 2019—The Toro® Company
8111 Lyndale Avenue South
Bloomington, MN 55420
Pro Force
Models 44552, 44552TE, 44553 & 44554
Form No. 18237SL Rev A
®
Debris Blower
Original Instructions (EN)
Contact us at www.Toro.com.
All Rights Reserved

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Summary of Contents for Toro Pro Force 44552TE

  • Page 1 Form No. 18237SL Rev A Pro Force ® Debris Blower Models 44552, 44552TE, 44553 & 44554 © 2019—The Toro® Company Original Instructions (EN) 8111 Lyndale Avenue South Contact us at www.Toro.com. Bloomington, MN 55420 All Rights Reserved...
  • Page 2 Revision History Revision Date Description Initial Issue 01/2019 Revision History Page 2 Pro Force® Debris Blower 18237SL Rev A...
  • Page 3 Reader Comments The Toro Company Technical Assistance Center maintains a continuous effort to improve the quality and usefulness of its publications. To do this effectively, we encourage user feedback. Please comment on the completeness, accuracy, organization, usability, and readability of this manual.
  • Page 4 Reader Comments Page 4 Pro Force® Debris Blower 18237SL Rev A...
  • Page 5 Service Manual for reference. Additional copies of the Operator’s Manuals, Installation Instructions and Parts Catalogs are available at www.toro.com. The Toro Company reserves the right to change the product specifications or this publication without notice. Pro Force® Debris Blower...
  • Page 6 Service Procedure Icons The following icons appear throughout this Service Manual to bring attention to specific important details of a service procedure. Critical Process This icon is used to highlight: • installing safety equipment (shields, guards, seat belts, brakes and R.O.P.S. components) that may have been removed •...

  • Page 7: Table Of Contents

    Table of Contents Preface ........................ 5 Chapter 1: Safety .................... 1–1 Safety Instructions ..................1–2 Jacking Instructions ..................1–6 Safety and Instructional Decals ..............1–6 Chapter 2: Specifications and Maintenance ............ 2–1 Specifications ....................2–2 Torque Specifications ................... 2–4 Shop Supplies .................... 2–10 Special Tools ....................
  • Page 8 Preface Page 8 Pro Force® Debris Blower 18237SL Rev A...

  • Page 9: Chapter 1: Safety

    Chapter 1 Safety Table of Contents Safety Instructions ..........................1–2 Think Safety First ..........................1–3 Jacking Instructions ..........................1–6 Safety and Instructional Decals ......................1–6 Pro Force® Debris Blower Page 1–1 Safety 18237SL Rev A...

  • Page 10: Safety Instructions

    Safety Instructions DANGER This safety symbol means danger. When you see this symbol, carefully read the instructions that follow. Failure to obey the instructions could kill or cause serious permanent injury or disability. WARNING This safety symbol means warning. When you see this symbol, carefully read the instructions that follow.

  • Page 11: Think Safety First

    Think Safety First Toro Products are tested and certified for compliance with existing safety standards and specifications. Although hazard control and accident prevention are partially dependent upon the design and configuration of the machine, hazard control and accident prevention are also dependent upon the awareness, concern and proper training of the personnel involved in the operation, transport, maintenance, and storage of the machine.
  • Page 12 Think Safety First (continued) • Avoid injury to bystanders… Always clear the area of bystanders before starting or testing powered equipment. • Avoid injury due to projectiles… Always clear the area of sticks, rocks or any other debris that could be picked up and thrown by the powered equipment.
  • Page 13 Think Safety First (continued) Use the proper class of fire extinguisher in case of fire. Ensure fire extinguishers are serviced regularly, and replace any fire extinguishers that are discharged or in use beyond their expiration dates. – Class A fire extinguishers are for ordinary combustible materials such as paper, wood, cardboard, and most plastics.

  • Page 14: Jacking Instructions

    If any decal becomes illegible or damaged, install a new decal. Decal part numbers are listed in your Parts Catalog, Operator’s Manual, and accessory Installation Instructions. Order replacement decals from Authorized Toro Distributor. Safety: Jacking Instructions Page 1–6 Pro Force®...

  • Page 15: Chapter 2: Specifications And Maintenance

    Chapter 2 Specifications and Maintenance Table of Contents Specifications ............................2–2 Overall Dimensions..........................2–2 Engine..............................2–3 Chassis .............................. 2–3 Torque Specifications ........................... 2–4 Calculating the Torque Values When Using a Drive-Adapter Wrench ..........2–5 Identifying the Fastener........................2–6 Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series)..........2–7 Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Fasteners) ........

  • Page 16: Specifications

    Specifications Overall Dimensions g274940 Figure 2 Specifications and Maintenance: Specifications Page 2–2 Pro Force® Debris Blower 18237SL Rev A...

  • Page 17: Engine

    Engine Item Description Make/Designation Kohler CH740S, 2-cylinder, air cooled, OHV gasoline engine Bore x Stroke 83 x 67 mm (3.27 x 2.64 inches) Total displacement 725 cm (44 in Compression ratio 9.0:1 Governor Electronic Low idle speed 1,700 to 1,900 rpm High idle speed 3,550 to 3,650 rpm (with no nozzle back pressure) Carburetor...

  • Page 18: Torque Specifications

    Torque Specifications The recommended fastener torque values are listed in the following tables. For critical applications, as determined by Toro, either the recommended torque or a torque that is unique to the application is clearly identified and specified in this Service Manual.

  • Page 19: Calculating The Torque Values When Using A Drive-Adapter Wrench

    Calculating the Torque Values When Using a Drive-Adapter Wrench g205924 Figure 3 Torque Conversion Factor = A / B Torque wrench A (effective length of torque wrench) Drive-adapter wrench (crowsfoot) B (effective length of torque wrench and drive-adapter wrench) Using a drive-adapter wrench (e.g., crowfoot wrench) in any position other than 90°...

  • Page 20: Identifying The Fastener

    Toro recommends replacing fasteners with a locking feature once they have been removed because the effectiveness of the locking feature diminishes with each reuse. If it is necessary to reuse a fastener with a locking feature; apply a thread locking compound (Loctite for example) to the fastener during installation.

  • Page 21: Standard Torque For Dry, Zinc Plated, And Steel Fasteners (Inch Series)

    Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series) Thread Size Grade 1, 5 SAE Grade 1 Bolts, Screws, SAE Grade 5 Bolts, Screws, SAE Grade 8 Bolts, Screws, and 8 with Studs, and Sems with Studs, and Sems with Studs, and Sems with Thin Height Regular Height Nuts...

  • Page 22: Standard Torque For Dry, Zinc Plated, And Steel Fasteners (Metric Fasteners)

    Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Fasteners) Class 8.8 Bolts, Screws, and Class 10.9 Bolts, Screws, and Thread Size Studs with Regular Height Nuts Studs with Regular Height Nuts (Class 8 or Stronger Nuts) (Class 10 or Stronger Nuts) M5 X 0.8 57 ±...

  • Page 23: Other Torque Specifications

    Other Torque Specifications SAE Grade 8 Steel Set Screws Recommended Torque Thread Size Square Head Hex Socket 1/4 - 20 UNC 140 ± 20 in-lb 73 ± 12 in-lb 5/16 - 18 UNC 215 ± 35 in-lb 145 ± 20 in-lb 3/8 - 16 UNC 35 ±...

  • Page 24: Shop Supplies

    Shop Supplies The procedures found in this Service Manual may recommend the use of commonly used shop supplies (lubricants, sealants, and adhesives). A symbol denoting the use of a shop supply may appear in figures that support a procedure. Always refer to the written procedure for specific information regarding the type and the application of a shop supply.
  • Page 25 Shop Supplies (continued) GASKET COMPOUND Used to create a seal between mating parts. Gasket compounds may be used with or without the presence of a pre-formed gasket. Gasket compounds may be solvent or silicone based, and cure when exposed to air or designed to cure in an air-less environment (anaerobic). Most gasket compounds are designed to be applied to clean surfaces free of oil, chemical residue and previously used gaskets or gasket compounds.

  • Page 26: Special Tools

    This excess current can damage the circuits that are not designed to carry it. Battery Terminal Protector Toro Part No. 107-0392 Use this aerosol spray on the battery terminals, ring terminals, and fork terminals to reduce corrosion problems. Apply the...
  • Page 27 Offset Wrench Toro Part No. TOR6006 The offset wrench is used to tighten the nut that secures the blower rotor assembly to the fan shaft. Use with 1/2 inch torque wrench at right angle to the offset wrench handle to ensure that proper torque is applied to the nut.
  • Page 28 Specifications and Maintenance: Special Tools Page 2–14 Pro Force® Debris Blower 18237SL Rev A...

  • Page 29: Chapter 3: Troubleshooting

    Chapter 3 Troubleshooting Table of Contents GEARS – The Systematic Approach to Defining, Diagnosing and Solving Problems ......3–2 Gather Information ..........................3–2 Evaluate Potential Causes ......................... 3–2 Assess Performance.......................... 3–2 Repair ..............................3–2 Solution Confirmation......................... 3–2 Using the Onboard Diagnostic Lamp ..................... 3–3 Entering Diagnostic Mode ........................

  • Page 30: Gears - The Systematic Approach To Defining, Diagnosing And Solving Problems

    GEARS – The Systematic Approach to Defining, Diagnosing and Solving Problems Gather Information •Information reported by the customer •Information observed by you •Establish the what, where and when of the issue Evaluate Potential Causes Consider possible causes of the problem to develop a hypothesis •Narrow down the focus of the problem Assess Performance •Ensure you have all the necessary tools for testing...

  • Page 31: Using The Onboard Diagnostic Lamp

    Machines with wireless hand held remote control (Models 44552, 44552TE, and 44553) have a diagnostic light located on the control tower below the hour meter. The diagnostic light is an output of the Toro Electronic Controller (TEC) that indicates normal machine operation or the presence of active machine faults.
  • Page 32 Appendix A (page A–1) RF2CAN module may be damaged, contact your authorized Toro Distributor Flash once – pause – flash Incompatible software Associate the hand held remote; refer to the twice, long pause then...

  • Page 33: Clearing Active Machine Faults

    Clearing Active Machine Faults 1. Resolve the active fault(s). 2. While in diagnostic mode (shunt connectors together), set the key switch to the R position. 3. Disconnect the diagnostic shunt connectors, then reconnect them. The diagnostic light will flash continuously once per second if all the active faults have been cleared.

  • Page 34: Starting Problems

    Starting Problems Problem Possible Cause Corrective Action The starter solenoid clicks, but the The battery charge is low Charge the battery starter does not crank The battery is discharged or damaged Charge and test the battery Replace the battery if necessary The battery cables are loose or Clean and secure the battery cables corroded...
  • Page 35 Starting Problems (continued) Problem Possible Cause Corrective Action The engine cranks, but does not start The fuel tank is empty Fill the fuel tank The engine and/or fuel is too cold Use the choke to start the engine Move the machine to a heated environment prior to starting The fuel filter is plugged Replace the fuel filter...

  • Page 36: General Operation Problems

    General Operation Problems Problem Possible Cause Corrective Action The battery does not charge The battery cables are loose or Clean and secure the battery cables corroded The ground connection is loose or Clean and secure the ground corroded connections at the engine block The battery is discharged or damaged Charge and test the battery Replace the battery if necessary...
  • Page 37 General Operation Problems (continued) Problem Possible Cause Corrective Action The nozzle does not rotate The drive belt is loose or damaged Adjust the drive belt or replace it as necessary; refer to the machine Operator’s Manual A nozzle relay is damaged Test nozzle relay 1 and nozzle relay 2 and replace them if necessary;...
  • Page 38 General Operation Problems (continued) Problem Possible Cause Corrective Action The engine speed does not change Models 44552, 44552TE, and Test the wireless remote batteries and 44553 – The wireless remote is not replace them if necessary functioning, (nozzle rotation control is not functioning also) Make sure the batteries are properly installed;...
  • Page 39 Chapter 4 Engine Table of Contents General Information ..........................4–2 Operator’s Manual ..........................4–2 Engine Owner’s Manual........................4–2 Engine Service Manual ........................4–2 Kohler Gasoline Engine ........................4–3 Adjustments ............................4–4 Aligning the Engine and Blower Drive Shafts ..................4–4 Adjusting the Engine Idle Speed ......................

  • Page 40: General Information

    Service and repair parts for the engine in your Pro Force debris blower are supplied through your Authorized Toro Distributor. Be prepared to provide your distributor with the Toro Model and Serial Number of your machine to obtain parts. When disposing of hazardous waste products (fuel, engine oil, hydraulic fluid, filters, etc.), take them to an authorized disposal site.

  • Page 41: Kohler Gasoline Engine

    Toro Electronic Controller (TEC). The TEC begins to monitor the condition of the oil pressure switch 3 minutes after the engine is started.

  • Page 42: Adjustments

    2. Ensure a woodruff key is installed in the engine shaft and the blower shaft. 3. Fit one collar of the Shaft Alignment Tool (Toro part number 137–6616) over the blower shaft and key; refer to Shaft Alignment Tool (page 2–13).

  • Page 43: Adjusting The Engine Idle Speed

    Adjusting the Engine Idle Speed Refer to the Kohler Command CH740 Service Manual for additional information. Pro Force® Debris Blower Page 4–5 Engine: Adjustments 18237SL Rev A...

  • Page 44: Service And Repairs

    Service and Repairs Fuel Tank g275247 Figure 9 Fuel tank Vent/rollover valve Fuel line – tank to filter Fuel tank cap Grommet Fuel filter Tank strap (2 each) Standpipe Fuel line – filter to carburetor Seal Hose clamp (4 each) Flange nut (4 each) Fuel gauge Bushing...
  • Page 45 DANGER Gasoline fuel is highly flammable and explosive. A fire or an explosion from the fuel can burn you, burn other people, and damage property. • Use caution whenever you store or handle gasoline fuel. • Do not smoke while filling the fuel tank. •...
  • Page 46 Installing the Fuel Tank (continued) 1. Install any previously removed components on the fuel tank. 2. Position the fuel tank on the machine (fuel cap outward) and install the hold down straps and flange nuts. 3. Remove the covers and plugs from the hoses and fittings, then secure the fuel hoses to the tank fittings with the hose clamps.

  • Page 47: Fuel Evaporative Control System

    Fuel Evaporative Control System g275201 Figure 10 Fuel tank Carbon canister Barb fitting (2 each) Grommet Hose (3 each) Hose clamp (4 each) Vent/rollover valve Fresh air filter Fuel filter Hose clamp (8 each) Hose – fresh air Purge valve Hose –...

  • Page 48: Engine

    Disassembling the Fuel Evaporative Control System (continued) DANGER Gasoline fuel is highly flammable and explosive. A fire or an explosion from the fuel can burn you, burn other people, and damage property. • Use caution whenever you store or handle gasoline fuel. •...
  • Page 49 Engine g277842 Figure 11 Engine Woodruff key Hardened washer (2 each) Flange nut (4 each) Engine shaft hub Muffler mount Top grill Washer Flange-head screw (2 each) Flange nut (4 each) Cap screw Muffler Rubber coupling spacer (4 each) Flange-head screw (4 each) Gasket (2 each) Washer (4 each) Flange nut (4 each)
  • Page 50 Removing the Engine (continued) 1. Park the machine on a level surface, shut off the engine, and remove the key from the key switch. Block the wheels with chocks to prevent the machine from moving. 2. Remove the top grill. 3.
  • Page 51 Removing the Engine (continued) g277747 Figure 12 Fuel supply hose Multi-pin wire harness connector Wire harness ground Fuel pump Flange-head screw Engine ground Fuel evaporative control hose Lock washer Positive battery cable Negative battery cable 5. Disconnect the fuel evaporative control hose at the intake manifold. Cover or plug the disconnected hose and the intake manifold inlet to prevent fuel evaporative control system contamination.
  • Page 52 Removing the Engine (continued) CAUTION Use an appropriate lift and the lifting lugs provided to prevent the engine from falling and causing personal injury or product damage. The weight of the engine is approximately 53 kg (116 lb). 13. Carefully remove the engine from the machine. 14.
  • Page 53 Installing the Engine (continued) 9. Secure the drive shaft to the hubs with the bolts, washers, and flange nuts. Tighten the drive shaft mounting fasteners to 34 to 37 N·m (25 to 27.5 ft-lb). 10. Secure the engine ground connector, wire harness ground, and negative battery cable to the engine with the screw and lock washer (Figure 12).
  • Page 54 Engine: Service and Repairs Page 4–16 Pro Force® Debris Blower 18237SL Rev A...

  • Page 55: Service And Repairs

    Testing the Electrical Components ......................5–8 Fuses ..............................5–9 Can bus............................5–11 Toro Electronic Controller (TEC) (Models 44552, 44552TE, and 44553) .......... 5–12 Toro Wireless Module (TWM) RF2CAN (Models 44552, 44552TE, and 44553)........ 5–15 Toro Wireless Module (TWM) Handheld Remote (Models 44552, 44552TE, and 44553)..............................

  • Page 56: General Information

    Kohler Engine Electrical Components When servicing or troubleshooting the engine electrical components, use the correct engine service manual and troubleshooting manual. The Kohler engine service and manual is available online, and on the Toro Service Reference flash drive. Toro Electronic Controller (TEC)

  • Page 57: Toro Wireless Modules (Twms)

    Toro Wireless Modules (TWMs) Wireless controlled Pro Force Debris Blowers (Models 44552, 44552TE, and 44553) use Toro Wireless Modules (TWMs) to allow the operator to control the blower from the tow vehicle without the need for a tethered control box. There are two TWMs used on the machine.

  • Page 58: Can-Bus Communications

    The Toro DIAG electronic control diagnostics service system is available to Authorized Toro Distributors to support machine fault diagnosis and maintenance services of the machine electrical control devices. The Toro DIAG connector is located on the left side of the machine control tower.

  • Page 59: Electrical Schematics And Wire Harness Drawings/Diagrams

    Electrical Schematics and Wire Harness Drawings/Diagrams Refer to the Electrical Schematics and Wire Harness Drawings/Diagrams in Appendix A (page A–1). Pro Force® Debris Blower Page 5–5 Electrical System: General Information 18237SL Rev A...

  • Page 60: Electrical System Quick Checks

    Electrical System Quick Checks Testing the Battery (Open Circuit Test) Use a multimeter to measure the voltage between the battery terminals; refer to Battery Test Table (page 5–6). Set the multimeter to the DC volts settings. The battery must be at a temperature of 16°C to 38°C (60°F to 100°F).
  • Page 61 Testing the Charging System (continued) Battery Voltage Table Charging System Performance: at least 0.50 V over the initial battery voltage Initial battery voltage = 12.30 V Battery voltage after 3 minutes charge = 12.85 V Difference = +0.55 V Pro Force® Debris Blower Page 5–7 Electrical System: Electrical System Quick Checks 18237SL Rev A...

  • Page 62: Testing The Electrical Components

    Testing the Electrical Components For accurate resistance and/or continuity checks, electrically disconnect the component being tested from the circuit (e.g., disconnect the key switch connector before doing a continuity check of the switch). IMPORTANT When testing the electrical components for continuity with a multimeter (ohms setting), ensure that you disconnect the power to the circuit.

  • Page 63: Fuses

    Fuses The individual control circuits are protected by a variety of fuses (F-1 – F-4) found in the fuse block located on the machine control tower next to the engine (Figure 14). g233941 Figure 14 Engine Fuse block Fuse block cover The engine wire harness includes a 30A in-line fuse (F-5) for charging circuit protection.
  • Page 64 Identification and Function g234233 Figure 16 Fuse F–1 (7.5 A) Fuse F–3 (15 A) Fuse F–2 (7.5 A) Fuse F–4 (2 A) Models 44552, 44552TE, and 44553 • Fuse F–1 (7.5 A) protects the power supply to TEC outputs 1–3 •...

  • Page 65: Can Bus

    Connector cover 1. Make sure that key switch is OFF and key is removed from switch. 2. The Toro DIAG connector is part of the CAN bus and is located on the left side of the machine control tower. Locate the Toro DIAG connector and remove it from the connector cover.
  • Page 66 (inputs) and directs electrical power to control appropriate machine functions (outputs) based on the state of the inputs. The TEC works in conjunction with the Toro Wireless Modules (TWMs) to manage power to the engine start relay and the nozzle control relays. The TEC also manages power to the following Kohler engine components: governor control unit, the fuel shut-off solenoid, and the ignition modules.

  • Page 67: Toro Electronic Controller (Tec) (Models 44552, 44552Te, And 44553)

    Toro Electronic Controller (TEC) (Models 44552, 44552TE, and 44553) (continued) TEC Digital Inputs INPUT NUMBER DESCRIPTION INPUT NUMBER DESCRIPTION DIN 1 Hour Meter and DIN 6 Not Used Engine Oil Pressure Switch DIN 2 Not Used DIN 7 Not Used...
  • Page 68 The controller may be damaged if an attempt is made to test it with an electrical test device (e.g., digital multimeter). Note: The Toro Electronic Controller (TEC) and the Toro Wireless Modules (TWMs) used on the Pro Force Debris Blower are matched for correct machine operation.

  • Page 69: Toro Wireless Module (Twm) Rf2Can (Models 44552, 44552Te, And 44553)

    Toro Wireless Module (TWM) RF2CAN (Models 44552, 44552TE, and 44553) g278908 Figure 20 Control tower Antenna RF2CAN module The RF2CAN module is a solid state electrical device used to convert radio frequency signals to and from the wireless handheld remote to CAN signals to and from the TEC.

  • Page 70: Toro Wireless Module (Twm) Handheld Remote (Models 44552, 44552Te, And 44553)

    Toro Wireless Module (TWM) Handheld Remote (Models 44552, 44552TE, and 44553) g278931 Figure 21 Remote transmitter Screws (6 each) Gasket AAA (1.5V) alkaline battery (4 used) Steel backer The handheld remote is a solid state electrical device that sends and receives radio frequency (RF) signals to and from the RF2CAN module.

  • Page 71: Key Switch (For Models 44552, 44552Te, And 44553)

    Key Switch (for Models 44552, 44552TE, and 44553) g279128 Figure 22 Key switch Control tower POSITION CLOSED CIRCUITS 1 + 6, 4 + 5 1 + 3 + 4 + 5 + 6 START 1 + 2 + 4 + 5 + 6 The key switch on the machine control tower has three (3) positions −...
  • Page 72 Testing the Key Switch (continued) 4. Use a multimeter (ohms setting) and the preceding table to determine whether continuity exists between the various terminals for each switch position. 5. Replace the switch if necessary. 6. If the switch tests correctly and a circuit problem still exists, check the wire harnesses;...

  • Page 73: Key Switch (For Model 44554)

    Key Switch (for Model 44554) g235608 Figure 23 Key switch Tether control box POSITION CLOSED CIRCUITS NONE B + C + F, D + E START A + B + C The key switch on the tether control box has three (3) positions − OFF, RUN and START.

  • Page 74: Hour Meter

    Hour Meter g233942 Figure 24 Control tower Hour meter The hour meter used on the Pro Force Debris Blower records the amount of time that the engine is running. Testing the Hour Meter 1. Park the machine on a level surface and stop the engine. 2.

  • Page 75: Nozzle Direction Switch (For Model 44554)

    Nozzle Direction Switch (for Model 44554) g235609 Figure 25 Nozzle direction switch Tether control box POSITION CLOSED CIRCUITS RAISE or 2 + 3, 5 + 6 FORWARD NONE LOWER or 2 + 1, 5 + 4 REVERSE When the left side of the nozzle direction switch is pressed and held, the nozzle rotates in the counterclockwise direction.

  • Page 76: Engine Speed Control (For Model 44554)

    Engine Speed Control (for Model 44554) g235611 Figure 26 Engine speed control Tether control box The engine speed control is a potentiometer located in the tether control box, and is used to control the engine speed (RPM). Testing the Engine Speed Control 1.
  • Page 77 Testing the Engine Speed Control (continued) B. Measure the resistance between the terminals A and C and then measure the resistance between the terminals A and B. Record these resistances. The total of the 2 measured resistances should be approximately 10,000 ohms.

  • Page 78: Relays

    Relays g234235 Figure 28 Start relay Nozzle relay 2 Control tower Nozzle relay 1 Main power relay The electrical system of the Pro Force Debris Blower uses 4 identical electrical relays that have 5 terminals. A tag near the relay wire harness connector can be used to identify each relay.
  • Page 79 g235610 Figure 29 Relay Tether control box Note: Model 44554 machines have an additional 5 terminal relay located in the tethered control box. This relay is not presently being used. Testing the Relays 1. Park the machine on a level surface and stop the engine. 2.
  • Page 80 Testing the Relays (continued) A. Check the coil resistance between the terminals 85 and 86 with a multimeter (ohms setting). The resistance must be approximately 70 to 90 ohms. B. Connect the multimeter leads to the relay terminals 30 and 87. Then ground terminal 85 and apply +12 VDC to terminal 86.

  • Page 81: Can Bus Terminator Resistors

    CAN bus Terminator Resistors g223018 Figure 31 Keyway CAN-bus terminator resistor The system communication between the electrical components on the Pro Force Debris Blower is accomplished on a CAN bus communication system. The 2 specially designed, twisted cables form the bus for the network are used on the machine.
  • Page 82 CAN bus; refer toAppendix A (page A–1) or contact an Authorized Toro Distributor for assistance. 6. After testing, ensure that the CAN bus terminator resistor is fully installed into the wire harness connector and secured to the wire harness with cable tie.

  • Page 83: Diagnostic Lamp (For Models 44552, 44552Te, And 44553)

    Diagnostic Lamp (for Models 44552, 44552TE, and 44553) g279250 Figure 32 Hex hut Diagnostic Lamp (LED) Gasket Red wire (+) Lock washer Black wire (-) Machines with wireless remote control have an LED diagnostic light located on the machine control tower. The TEC controller uses the diagnostic light (output) to notify the operator or the service technician of an issue that may exist with the machine;...

  • Page 84: Nozzle Motor

    Nozzle Motor The motor used to rotate the nozzle is a reversible 12 VDC electric motor with an integrated gear box. The assembly components are not serviceable separately. g279312 Figure 33 Nozzle motor assembly Nozzle motor connector Testing the Nozzle Motor 1.

  • Page 85: Service And Repairs

    Service and Repairs Note: Refer to the Kohler Engine Service Manual (included at the end of Engine (page 4–11)) for engine electrical component repair information. Pro Force® Debris Blower Page 5–31 Electrical System: Service and Repairs 18237SL Rev A...

  • Page 86: Nozzle Motor

    Nozzle Motor g233406 Figure 34 Nozzle Nozzle motor Ball bearing (3 each) Nozzle clamp Bolt (3 each) Locknut V-belt Motor bracket Leaf spring Bolt (6 each) Flange nut (4 each) Shoulder bolt Spacer (8 each) Flange-head screw (2 each) Flat washer (10 each) Nozzle pulley Drive pulley Flat washer (4 each)
  • Page 87 Removing the Nozzle Motor (continued) 6. Loosen the 2 flange-head screws (item 14) and 2 flange nuts that secure the nozzle motor bracket to the outer housing. Rotate the bracket and nozzle motor to loosen the V-belt. 7. Loosen the 2 bolts and 2 flange nuts that secure the belt guard (item 17), route V-belt from behind guard and carefully remove the belt from the machine.
  • Page 88 Installing the Nozzle Motor (continued) 9. Connect the battery negative (-) cable at the battery. 10. Test the nozzle rotation before returning the machine to service. Electrical System: Service and Repairs Page 5–34 Pro Force® Debris Blower 18237SL Rev A...

  • Page 89: Caring For The Battery

    Always disconnect the negative (-) cable first. Clean the cable clamps and terminals separately. Connect the battery cables. Always connect the positive (+) cable first. Apply a coating of Toro Part No. 107-0392 battery terminal protector or a light coat of petroleum jelly to the terminals to reduce corrosion after you make the connections.

  • Page 90: Storing The Battery

    Storing the Battery If you store the machine for more than 30 days: 1. Remove the battery and charge it fully; refer to Charging the Battery (page 5–42). 2. Store the battery: • on a shelf or on the machine •...

  • Page 91: Servicing The Battery

    Servicing the Battery g279482 Figure 36 Battery Battery negative (-) cable Battery positive (+) cable Engine and chassis ground Starter motor Battery Specifications Battery-electrolyte specific gravity Fully Charged: 1.25 to 1.28 at 27°C (80°F) Discharged: less than 1.24 Battery specifications BCI Group 26 540 CCA at -18°C (0°F) Reserve Capacity of 80 minutes at 27°C (80°F)
  • Page 92 CAUTION Battery-electrolyte is corrosive and can burn skin and eyes and damage clothing. While working with the batteries, use extreme caution to avoid splashing or spilling of the electrolyte. Always wear the safety goggles and a face shield while working with batteries. Electrical System: Service and Repairs Page 5–38 Pro Force®...
  • Page 93 Removing and Installing the Battery g234239 Figure 37 Hairpin cotter (2 each) Control tower Battery cover Carriage screw Battery Battery cover bracket Battery positive (+) cable Bolt (2 each) Flange nut Clip (2 each) Battery retainer Battery negative (-) cable Pro Force®...
  • Page 94 Removing and Installing the Battery (continued) IMPORTANT Be careful when removing the battery cables and ensure that you do not damage the terminal posts or cable connectors. 1. Park the machine on a level surface, shut off the engine, and remove the key from the key switch.
  • Page 95 Inspecting, Maintaining, and Testing the Battery (continued) 1. Inspect the battery as follows: A. Check for cracks. Replace the battery if cracked or leaking. B. Check the battery terminals for corrosion. Use the wire brush to clean corrosion from the posts. IMPORTANT Before cleaning the battery, tape or block the vent holes of the filler caps and ensure that the caps are secure.
  • Page 96 Inspecting, Maintaining, and Testing the Battery (continued) 3. Do a high-discharge test with an adjustable load tester. This is a very reliable means of testing a battery as it simulates the battery cold-cranking capacity. A commercial battery load tester is required to do this test. CAUTION Follow the manufacturer's instructions when using a battery load tester.
  • Page 97 Charging the Battery (continued) Battery Charge Rate (continued) 171 to 250 5.8 hrs @ 6 A 11.5 hrs @ 6 A 17.3 hrs @ 6 A 23 hrs @ 6 A above 250 6 hrs @ 10 A 12 hrs @ 10 A 18 hrs @ 10 A 24 hrs @ 10 A To minimize damage to the battery and allow the battery to charge fully, use the...
  • Page 98 Electrical System: Service and Repairs Page 5–44 Pro Force® Debris Blower 18237SL Rev A...
  • Page 99 Chapter 6 Blower Assembly Table of Contents General Information ..........................6–2 Service and Repairs ..........................6–3 Blower Drive Shaft ..........................6–4 Replacement Blower.......................... 6–6 Rotor Assembly..........................6–8 Rotor Shaft............................6–10 Inner Housing Assembly ........................6–12 Nozzle Assembly ..........................6–16 Pro Force® Debris Blower Page 6–1 Blower Assembly 18237SL Rev A...

  • Page 100: General Information

    General Information The Operator’s Manual provides information regarding the operation, general maintenance, and maintenance intervals for your Pro Force Debris Blower. Refer to the Operator’s Manual for additional information when servicing the machine. Blower Assembly: General Information Page 6–2 Pro Force® Debris Blower 18237SL Rev A...

  • Page 101: Service And Repairs

    Service and Repairs CAUTION To ensure that the machine operation does not occur unexpectedly, disconnect the negative battery cable from the battery before performing any machine service; refer to Servicing the Battery (page 5–37). Pro Force® Debris Blower Page 6–3 Blower Assembly: Service and Repairs 18237SL Rev A...

  • Page 102: Blower Drive Shaft

    Blower Drive Shaft g233401 Figure 38 Drive Shaft Bolt Fan hub Bolt (2 each) Coupling spacer (2 each) Woodruff key Bolt (2 each) Flange nut (4 each) Engine hub and coupling assembly Washer (4 each) Washer Drive coupling (2 each) Coupling spacer (2 each) Note: The shaft hub and coupling assemblies used between the drive shaft and the engine shaft are comprised of the same components.
  • Page 103 Removing the Blower Drive Shaft (continued) 4. Remove the bolts, washers, and flange nuts that secure the drive shaft assembly to the hubs on the engine shaft and blower shaft. 5. Lift the drive shaft assembly from the machine. 6. Disassemble the drive couplings from the drive shaft. For assembly purposes, note the differences in the coupling spacers.

  • Page 104: Replacement Blower

    Replacement Blower g280438 Figure 39 Replacement blower assembly Rear fan mount Retaining ring Nozzle guide (2 each) Wave washer Spacer (4 each) Front cap Washer (2 each) Weld seam Ball bearing Inlet bell Cap screw Front fan mount Cap screw (3 each) Cap screw (8 each) 3/8–16 eye bolt (lift point) Washer (8 each)
  • Page 105 Assembling a Replacement Blower Refer to Figure 39 for this procedure. 1. Install the front cap, wave washer, and retaining ring. 2. Locate the weld seam on the blower outer housing. Install the inlet bell and the front fan mount so the fan mount is centered over the weld seam. Move the fan mount all the way to the right in its mounting slots (counterclockwise) and secure all of the inlet bell fasteners.

  • Page 106: Rotor Assembly

    Rotor Assembly g280191 Figure 40 Retaining ring Outer tab washer Woodruff key Wave washer Inner tab washer Washer (A/R) Front cap Spacer Rotor shaft Hex nut (left-hand threads) Rotor assembly Removing the Rotor Assembly Refer to Figure 40 for the for this procedure. 1.
  • Page 107 Removing the Rotor Assembly (continued) Note: The rotor assembly components are not available separately. If rotor damage occurs, replace the complete rotor assembly. Installing the Rotor Assembly Refer to Figure 40 for the for this procedure. Note: Washers (item 10) are used to prevent the rotor from contacting the rotor housing assembly.

  • Page 108: Rotor Shaft

    Rotor Shaft g280307 Figure 42 Flange-head screw (8 each) End cap Nozzle clamp Front bearing cap O-ring Nozzle Retaining ring (4 each) Rear bearing cap Rotor shaft Bearing (2 each) Center plate Note: The rotor shaft and bearings can be serviced without removing the inner housing from the machine.
  • Page 109 Removing the Rotor Shaft (continued) 7. Inspect the rotor shaft, bearing bores of the bearing caps, and bearings for wear or damage, and replace the parts as necessary. Installing the Rotor Shaft Refer to Figure 42 for this procedure. 1. Install the inner retaining rings into the rotor shaft grooves if they were removed.

  • Page 110: Inner Housing Assembly

    Inner Housing Assembly g280705 Figure 43 Inner housing assembly Cap screw (8 each) 3/8–16 eye bolt (lift point) Stator vane (24 each) Support fin (4 each) Jam nut Flange-head screw (24 each) Shim – 0.030 inch (as required) Note: The rotor shaft and bearings can be serviced without removing the inner housing from the blower assembly;...
  • Page 111 Removing Inner Housing Components (continued) 4. Disconnect the nozzle motor from the machine wire harness and remove the fasteners that secure the blower assembly to the machine frame. Remove the blower assembly from the machine. 5. Remove the nozzle motor bracket assembly, nozzle pulley, and rear fan mount from the blower assembly;...
  • Page 112 Installing Inner Housing Components (continued) 1. Assemble the inner housing if it was disassembled; refer to Installing the Rotor Shaft (page 6–11). 2. Position the inner housing assembly on supports with the rotor shaft pointing up. Carefully lower the outer housing around inner housing assembly. Place 14.3 mm (9/16 inch) thick spacers between the supports and the outer housing.
  • Page 113 Installing Inner Housing Components (continued) 6. Install the rear fan mount, nozzle pulley, and nozzle motor bracket assembly to the blower assembly; refer to Installing the Nozzle Assembly (page 6–16). CAUTION The blower assembly weighs approximately 50 kg (110 lbs). Use an appropriate lifting device when moving the blower assembly.

  • Page 114: Nozzle Assembly

    Nozzle Assembly g280635 Figure 45 Nozzle Cap screw (2 each) Flat washer (4 each) Nozzle clamp Flange nut (10 each) Ball bearing (2 each) Nozzle pulley Cap screw (6 each) Spacer (8 each) Nozzle motor bracket assembly Cap screw (2 each) Nozzle guide (4 each) Note: For nozzle motor service information;...
  • Page 115 Installing the Nozzle Assembly (continued) Note: When installing the leaf spring assembly, the flat side of the leaf spring should be downward. The bearing on the leaf spring assembly should be centered on the outside of the V-belt. g280657 Figure 46 Nozzle motor Belt guard Motor bracket...
  • Page 116 Installing the Nozzle Assembly (continued) secure the nozzle motor bracket assembly. Refer to the machine Operator’s Manual for additional information. 6. Check and adjust the belt guard around the V-belt as necessary. 7. Install the nozzle and the nozzle clamp. Position the nozzle clamp fasteners at the seam inside the nozzle and tighten from 5.0 to 5.5 N·m (45 to 50 in-lb).
  • Page 117 Chapter 7 Chassis Table of Contents General Information ..........................7–2 Service and Repairs ..........................7–3 Wheels ............................... 7–3 Wheel Hubs and Bearings ......................... 7–5 Guards ............................... 7–7 Pro Force® Debris Blower Page 7–1 Chassis 18237SL Rev A...

  • Page 118: General Information

    General Information The Operator’s Manual provides information regarding the operation, general maintenance, and maintenance intervals for your Pro Force Debris Blower. Refer to the Operator’s Manual for additional information when servicing the machine. Chassis: General Information Page 7–2 Pro Force® Debris Blower 18237SL Rev A...

  • Page 119: Service And Repairs

    Service and Repairs Wheels g233390 Figure 47 Models 44552, 44552TE, and 44554 shown Main frame Wheel-lug nut (4 each wheel) Wheel hub assembly Fender Wheel and tire assembly Removing the Wheel 1. Have the Pro Force Blower attached to a tow vehicle and park the machines on a level surface.
  • Page 120 Installing the Wheel (continued) WARNING Failure to maintain proper torque could result in failure or loss of wheel and may result in personal injury. Maintain the proper torque of the wheel-lug nuts. 3. Lower the machine to the ground and tighten the lug nuts to 95 to 122 N∙m (70 to 90 ft-lb) in a crossing pattern.

  • Page 121: Wheel Hubs And Bearings

    Wheel Hubs and Bearings g233391 Figure 48 Carriage bolt (3 each per axle) Lug screw (4 each per hub) Dust cap Axle Bearing cup (2 each per axle) Wheel hub Cotter pin Spindle washer Flange nut (3 each per axle) Oil seal Carriage bolt (4 each) Bearing cone (2 each per axle)
  • Page 122 Assembling the Wheel Hubs and Bearings Refer to Figure 48 for the following procedure. 1. Assemble the wheel hub as follows: A. If the lug screws were removed from the wheel hub, press the lug screws fully into the hub. Ensure that the lug screw flange is pressed fully to the hub surface.

  • Page 123: Guards

    Guards g233393 Figure 49 Muffler mount Bolt (2 each) Tinnerman nut (2 each) Flange nut (4 each) Top grill Hardened washer (2 each) Removing the Guards 1. Park the machine on a level surface, shut off the engine, and remove the key from the key switch.
  • Page 124 Installing the Guards (continued) 2. Connect the negative battery cable to the negative battery terminal. Tighten the nut that secures the battery cable to 14 to 20 N∙m (10 to 15 ft-lb). Ensure that the battery cover is secured. Chassis: Service and Repairs Page 7–8 Pro Force®...

  • Page 125: Appendix A

    Appendix A Foldout Drawings Table of Contents Electrical Drawing Designations......................A–2 Electrical Schematic (Models 44552, 44552TE, and 44553) ..............A–3 Electrical Schematic (Model No. 44554) ....................A–4 Engine Electrical Diagram........................A–5 Wire Harness Drawing-Main ......................A–6 Wire Harness Diagram-Main......................A–7 Wire Harness-Trailer (Model No. 44553) ...................A–8 Wire Harness -Tethered Control Box (Model No.

  • Page 126: Electrical Drawing Designations

    Y or YE YELLOW Numerous harness wires used on the Toro machines include a line with an alternate color. These wires are identified with the wire color and line color with either a / or _ separating the color abbreviations listed above (e.g., R/BK is a red wire with a black line, OR_BK is an orange wire with a black line).

  • Page 127: Electrical Schematic (Models 44552, 44552Te, And 44553

    Electrical Schematic (Models 44552, 44552TE, and 44553) g279528 Pro Force Blower (Models 44552 and 44553), Drawing 122-1506 Rev A, Sheet 1 of 1 18237SL Rev A Page A–3...

  • Page 128: Electrical Schematic (Model No. 44554

    Electrical Schematic (Model No. 44554) g235236 Page A–4 18237SL Rev A Pro Force Blower (Model No. 44554), Drawing 122-0619 Rev A, Sheet 1 of 1...

  • Page 129: Engine Electrical Diagram

    Engine Electrical Diagram g279585 Pro Force Blower, Drawing Rev , Sheet 1 of 1 18237SL Rev A Page A–5...

  • Page 130: Wire Harness Drawing-Main

    Wire Harness Drawing-Main g279710 Page A–6 18237SL Rev A Pro Force Blower, Drawing 122-1505 Rev A, Sheet 1 of 1...

  • Page 131: Wire Harness Diagram-Main

    Wire Harness Diagram-Main g279709 ProForce Blower, Drawing 122-1505 Rev A, Sheet 1 of 1 18237SL Rev A Page A–7...

  • Page 132: Wire Harness-Trailer (Model No. 44553

    Wire Harness-Trailer (Model No. 44553) g235234 Page A–8 18237SL Rev A Pro Force Blower (Model 44553), Drawing 119-1792 Rev C, Sheet 1 of 1...

  • Page 133: Wire Harness -Tethered Control Box (Model No. 44554

    Wire Harness -Tethered Control Box (Model No. 44554) g235233 Pro Force Blower (Model No. 44554), Drawing 119-1757 Rev A, Sheet 1 of 1 18237SL Rev A Page A–9...

  • Page 134: Wire Harness-Tether Adapter (Model No. 44554

    Wire Harness-Tether Adapter (Model No. 44554) g235237 Page A–10 18237SL Rev A Pro Force Blower (Model 44554), Drawing 122-0620 Rev B, Sheet 1 of 1...

This manual is also suitable for:

Pro force 44553Pro force 44552Pro force 44554

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