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Toro Reelmaster 3550-D Preliminary Service Manual
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Toro Reelmaster 3550-D Preliminary Service Manual

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Preface
The purpose of this publication is to provide the service
technician with preliminary service information for
service and repair of major systems and components on
the Reelmaster 3550--D.
REFER TO THE TRACTION UNIT AND CUTTING
UNIT OPERATOR'S MANUALS FOR OPERATING,
MAINTENANCE AND ADJUSTMENT INSTRUC-
TIONS. Copies of the Operator's Manuals and Parts
Catalog are available on the internet at www.Toro.com.
The Toro Company reserves the right to change product
specifications or this publication without notice.
Preliminary Service Manual
Reelmaster
This safety symbol means DANGER, WARNING
or CAUTION, PERSONAL SAFETY INSTRUC-
TION. When you see this symbol, carefully read
the instructions that follow. Failure to obey the
instructions may result in personal injury.
NOTE: A NOTE will give general information about the
correct operation, maintenance, service, testing or re-
pair of the machine.
IMPORTANT: The IMPORTANT notice will give im-
portant instructions which must be followed to pre-
vent damage to systems or components on the
machine.
E The Toro Company - - 2013
For Toro Distributor Use Only
R
3550- -D

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  • Page 1 TIONS. Copies of the Operator’s Manuals and Parts Catalog are available on the internet at www.Toro.com. NOTE: A NOTE will give general information about the The Toro Company reserves the right to change product correct operation, maintenance, service, testing or re- specifications or this publication without notice.
  • Page 2 This page is intentionally blank. Reelmaster 3550--D...

  • Page 3: Table Of Contents

    Table Of Contents Chapter 1 - - Safety Chapter 5 - - Electrical System General Safety Instructions ....1 -- 2 General Information .
  • Page 4 This page is intentionally blank. Reelmaster 3550--D...
  • Page 5 Chapter 1 Safety Table of Contents GENERAL SAFETY INSTRUCTIONS ... . Before Operating ......While Operating .

  • Page 6: General Safety Instructions

    General Safety Instructions The Reelmaster 3550--D has been tested and certified by TORO for compliance with existing safety standards WARNING and specifications. Although hazard control and acci- dent prevention partially are dependent upon the design To reduce the potential for injury or death, and configuration of the machine, these factors are also comply with the following safety instructions.
  • Page 7 7. Before disconnecting or performing any work on the the machine, use genuine Toro replacement parts and hydraulic system, all pressure in system must be re- accessories. Replacement parts and accessories made...

  • Page 8: Safety And Instruction Decals

    Safety and Instruction Decals Numerous safety and instruction decals are affixed to the Reelmaster 3550--D. If any decal becomes illegible or damaged, install a new decal. Decal part numbers are listed in your Parts Catalog. Safety Page 1 - - 4 Reelmaster 3550--D...

  • Page 9: Product Records

    Chapter 2 Product Records and Maintenance Table of Contents PRODUCT RECORDS ......MAINTENANCE ......EQUIVALENTS AND CONVERSIONS .

  • Page 10: Equivalents And Conversions

    Equivalents and Conversions 0.09375 Product Records and Maintenance Page 2 - - 2 Reelmaster 3550--D...

  • Page 11: Torque Specifications

    For critical applications, as determined reduced by 25% for lubricated fasteners to achieve by Toro, either the recommended torque or a torque that the similar stress as a dry fastener. Torque values may is unique to the application is clearly identified and spe- also have to be reduced when the fastener is threaded cified in this Service Manual.

  • Page 12: Standard Torque For Dry, Zinc Plated And Steel Fasteners (Inch Series)

    Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series) Grade 1, 5 & SAE Grade 1 Bolts, Screws, Studs & SAE Grade 5 Bolts, Screws, Studs & SAE Grade 8 Bolts, Screws, Studs & Thread Size 8 with Thin Sems with Regular Height Nuts Sems with Regular Height Nuts Sems with Regular Height Nuts...
  • Page 13 Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Series) Class 8.8 Bolts, Screws and Studs with Class 10.9 Bolts, Screws and Studs with Thread Size Regular Height Nuts Regular Height Nuts (Class 8 or Stronger Nuts) (Class 10 or Stronger Nuts) M5 X 0.8 57 + 6 in--lb 644 + 68 N--cm...

  • Page 14: Other Torque Specifications

    Other Torque Specifications SAE Grade 8 Steel Set Screws Wheel Bolts and Lug Nuts Recommended Torque Thread Size Recommended Torque** Thread Size Square Head Hex Socket 7/16 -- 20 UNF 65 + 10 ft--lb 88 + 14 N--m Grade 5 1/4 -- 20 UNC 140 + 20 in--lb 73 + 12 in--lb...

  • Page 15: Chapter 3 - - Kubota Diesel Engine

    Chapter 3 Kubota Diesel Engine Table of Contents SPECIFICATIONS ......GENERAL INFORMATION ..... Operator’s Manual .

  • Page 16: Specifications

    Specifications Item Description Make / Designation Kubota Model D1105--E3B 4--Cycle, 3 Cylinder, Liquid Cooled, Diesel Engine Bore x Stroke 3.07” x 3.09” (78 mm x 78.4 mm) Total Displacement 68.5 in (1123 cc) Firing Order 1 (fan end) -- 2 -- 3 (flywheel end) Compression Ratio 22.0:1 Direction of Rotation...

  • Page 17: General Information

    Kubota Workshop Manual: 05 Series Service and repair parts for Kubota engines are sup- Diesel Engine. plied through your Authorized Toro Distributor. If no parts list is available, be prepared to provide your distrib- Most repairs and adjustments require tools which are utor with the Toro model and serial number.
  • Page 18 This page is intentionally blank. Kubota Diesel Engine Page 3 - - 4 Reelmaster 3550--D...

  • Page 19: Specifications

    Chapter 4 Hydraulic System Table of Contents SPECIFICATIONS ......GENERAL INFORMATION ..... Operator’s Manual .
  • Page 20 This page is intentionally blank. Hydraulic System Page 4 - - 2 Reelmaster 3550--D...

  • Page 21: Specifications

    Specifications Item Description Piston (Traction) Pump Eaton variable displacement piston pump (Model 70160) Maximum Displacement (per revolution) 1.44 in (23.6 cc) System Relief Pressure: Forward 3000 PSI (207 bar) Charge Pressure 100 to 150 PSI (6.9 to 10.3 bar) Front Wheel Motors Orbital rotor motor Displacement (per revolution) 12.0 in...

  • Page 22: General Information

    General Information Operator’s Manual The Traction Unit and Cutting Unit Operator’s Manuals provide information regarding the operation, general maintenance and maintenance intervals for your Reel- master machine. Refer to these publications for addi- tional information when servicing the machine. Towing Traction Unit IMPORTANT: If towing limits are exceeded, severe damage to the piston pump may occur.

  • Page 23: Relieving Hydraulic System Pressure

    If a component in the traction circuit should fail, de- during operation. Because the Toro high flow filter is bi-- bris and contamination from the failed component will directional, the traction circuit can be operated in both circulate throughout the traction circuit.

  • Page 24: Hydraulic Hoses

    Tube Installation in this section). If the hose has an el- bow at one end, tighten the swivel nut on that end before tightening the nut on the straight end of the hose. For additional hydraulic hose information, refer to Toro Service Training Book, Hydraulic Hose Servicing (Part Number 94813SL).

  • Page 25: Hydraulic Hose And Tube Installation

    Hydraulic Hose and Tube Installation (O- -Ring Face Seal Fitting) 1. Make sure threads and sealing surfaces of the hose/ C. Use a second wrench to tighten the nut to the cor- tube and the fitting are free of burrs, nicks, scratches or rect Flats From Wrench Resistance (F.F.W.R.).
  • Page 26 Hydraulic Fitting Installation (SAE Straight Thread O- -Ring Fitting into Component Port) Non- -Adjustable Fitting (Fig. 6) 5. If a torque wrench is not available, or if space at the port prevents use of a torque wrench, an alternate meth- 1.
  • Page 27 Adjustable Fitting (Fig. 8) 1. Make sure all threads and sealing surfaces of fitting and component port are free of burrs, nicks, scratches or any foreign material. 2. As a preventative measure against leakage, it is rec- ommended that the O--ring be replaced any time the connection is opened.

  • Page 28: Hydraulic Schematic

    Hydraulic Schematic Hydraulic System Page 4 - - 10 Reelmaster 3550--D...
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  • Page 30: Special Tools

    Special Tools Order the following special tools from your Toro Distributor. Hydraulic Pressure Test Kit Use to take various pressure readings for diagnostic tests. Quick disconnect fittings provided attach directly to mating fittings on machine test ports without tools. A high pressure hose is provided for remote readings.
  • Page 31 3. FLOW METER: This meter measures actual oil flow in the operating circuit with a gauge rated from 4 to 40 GPM (20 to 150 LPM). Toro Part Number: AT40002 Figure 12 NOTE: This tester does not include hydraulic hoses (see Hydraulic Hose Kit TOR6007 below).
  • Page 32 Toro Part Number: TOR6011 NOTE: This kit does not include hydraulic hoses (see Hydraulic Hose Kit TOR6007 above). NOTE: Replacement filter element is Toro part number TOR6012. Filter element cannister tightening torque is 25 ft- -lb (34 N- -m). Hydraulic Test Fitting Kit This kit includes a variety of O--ring Face Seal fittings to enable you to connect test gauges into the system.
  • Page 33 The kit includes O--rings in a variety of sizes for face seal and port seal hydraulic connections. It is recommended that O--rings be replaced whenever a hydraulic connec- tion is loosened. Toro Part Number: 117- -2727 Figure 18 Reelmaster 3550--D Page 4 - - 15...

  • Page 34: Testing

    Testing The most effective method for isolating problems in the Precautions for Hydraulic Testing hydraulic system is by using hydraulic test equipment 1. Clean machine thoroughly before disconnecting or such as pressure gauges and flow meters in the circuits disassembling any hydraulic components. Always keep during various operational checks (See the Special in mind the need for cleanliness when working on hy- Tools section in this chapter).

  • Page 35: Adjustments

    Adjustments Adjust Control Manifold Relief Valves The hydraulic control manifolds on your Reelmaster in- clude adjustable relief valves. The following procedure can be used to adjust these relief valves. NOTE: Do not remove relief valve from the hydraulic manifold for adjustment. 1.

  • Page 36: Service And Repairs

    Service and Repairs General Precautions for Removing and Installing Hydraulic System Components Before Repair or Replacement of Hydraulic Compo- After Repair or Replacement of Hydraulic Compo- nents nents 1. Before removing any parts from the hydraulic sys- 1. Check oil level in the hydraulic reservoir and add cor- tem, park machine on a level surface, engage parking rect oil if necessary.

  • Page 37: Check Hydraulic Lines And Hoses

    Check Hydraulic Lines and Hoses IMPORTANT: Check hydraulic lines and hoses daily for leaks, kinked lines, loose mounting supports, WARNING wear, loose fittings or deterioration. Make all neces- sary repairs before operating the machine. Keep body and hands away from pin hole leaks or nozzles that eject hydraulic fluid under high pressure.

  • Page 38: Flush Hydraulic System

    Flush Hydraulic System IMPORTANT: Flush the hydraulic system any time 8. Disconnect wire harness connector from engine run there is a severe component failure or the system is solenoid to prevent the engine from starting. contaminated (oil appears milky, black or contains 9.

  • Page 39: Filtering Closed--Loop Traction Circuit

    To effectively remove contamination from 8. With engine running at high idle speed and traction closed--loop traction circuit, use of the Toro high flow hy- pedal moved to the forward direction, periodically apply draulic filter and hydraulic hose kits are recommended brakes to increase pressure in traction circuit.

  • Page 40: Charge Hydraulic System

    Charge Hydraulic System NOTE: When initially starting the hydraulic system with 11. After the hydraulic system starts to show signs of fill, new or rebuilt components such as pumps, motors or lift actuate lift control until the lift cylinder rods move in and cylinders, it is important that the hydraulic system be out several times.
  • Page 41 ......Toro Electronic Controllers (TEC) ... . .

  • Page 42: General Information

    Toro Electronic Controller (TEC) Reelmaster 3550--D machines use a single Toro Elec- Because of the solid state circuitry built into the Toro tronic Controller (TEC) to manage machine electrical Electronic Controller (TEC), there is no method to test functions.

  • Page 43: Electrical Schematic

    Electrical Schematic The electrical schematic for the Reelmaster 3550--D is located in Chapter 8 -- Foldout Drawings. Reelmaster 3550--D Page 5 - - 3 Electrical System...

  • Page 44: Special Tools

    The multimeter can test electrical components and cir- cuits for current (amps), resistance (ohms) or voltage. Obtain this tool locally. NOTE: Toro recommends the use of a DIGITAL Volt-- Ohm--Amp multimeter when testing electrical circuits. The high impedance (internal resistance) of a digital me- ter in the voltage mode will make sure that excess cur- rent is not allowed through the meter.
  • Page 45 Aerosol spray that should be used on battery terminals to reduce corrosion problems. Apply battery terminal protector after the battery cable has been secured to the battery terminal. Toro Part Number: 107- -0392 Figure 5 Reelmaster 3550--D Page 5 - - 5...
  • Page 46 Toro Electronic Controllers (TEC) inputs and outputs can be checked using the Diagnostic Display. Toro Part Number for Diagnostic Display: 85- -4750 Toro Part Number for Overlay (English): 121- -7886 NOTE: Diagnostic Display overlays are available in several languages for your Reelmaster.

  • Page 47: Troubleshooting

    Troubleshooting For effective troubleshooting and repairs, there must be CAUTION a good understanding of the electrical circuits and com- ponents used on this machine (see Chapter 8 -- Foldout Drawings). Remove all jewelry, especially rings and If the machine has any interlock switches by--passed, watches, before doing any electrical trouble- shooting or testing.
  • Page 48 (40) hours of machine operating time, the fault cannot be retrieved from controller memory using NOTE: Once the diagnostic light begins to display fault this procedure. If necessary, contact your Toro distribu- codes, the joystick can be released. tor to retrieve older fault codes.
  • Page 49 Clearing Fault Codes 2. Operator seat should remain UNOCCUPIED. After fault codes have been retrieved, clearing of those 3. Move mow/backlap lever on the hydraulic mow con- faults can be completed using the following switch se- trol manifold to the BACKLAP position. quence: 4.

  • Page 50: Diagnostic Display

    Diagnostic Display Reelmaster 3550--D machines are equipped with a Toro Electronic Controller (TEC) which controls machine electrical functions. The controller monitors various in- put switches (e.g. ignition switch, seat switch, neutral switch) and energizes outputs to actuate solenoids or relays for the requested machine function.
  • Page 51 NOTE: The red text on the Diagnostic Display overlay NOTE: When the Diagnostic Display is attached to the decal refers to TEC inputs and the green text refers to wire harness connector and the ignition switch is in the TEC outputs. ON position, the input LED for alternator and engine temp should be illuminated.
  • Page 52 Diagnostic Display Inputs Diagnostic Display LED Operation ENGINE TEMP (A) Engine coolant temperature, switch and circuit wiring OK: LED ON Coolant temperature, switch or circuit wiring faulty: LED OFF P BRAKE OFF Parking brake released: LED ON Parking brake applied: LED OFF NEUTRAL Traction pedal in neutral: LED ON Traction pedal in forward or reverse: LED OFF...
  • Page 53 The Diagnostic Display also has the ability to detect correctly illuminated, this indicates a TEC controller which output solenoids or relays are energized by the problem. If this occurs, contact your Toro Distributor TEC controller(s). This is a quick way to determine if a for assistance.

  • Page 54: Electrical System Quick Checks

    Electrical System Quick Checks Battery Test (Open Circuit Test) Use a multimeter to measure the voltage between the Voltage Measured Battery Charge Level battery terminals. 12.68 V (or higher) Fully charged (100%) Set multimeter to the DC volts setting. The battery 12.45 V 75% charged should be at a temperature of 60...

  • Page 55: Check Operation Of Interlock Switches

    NOTE: Use the Diagnostic Display (see Special Tools Replace any malfunctioning switches before op- in this chapter) to test Toro Electronic Controller inputs erating the machine. and outputs before further troubleshooting of an electri- cal problem on your Reelmaster.

  • Page 56: Component Testing

    7. If the ignition switch tests correctly and a circuit prob- and has three (3) positions: STOP, RUN and START lem still exists, check wire harness. (Fig. 14). The Toro Electronic Controller (TEC) monitors 8. After testing is complete, connect machine wire har- the operation of the ignition switch.

  • Page 57: Fuses

    Fuses The fuse blocks are located in the power center under Fuse Testing the hood on the right side of the machine. Remove cover from control panel to access fuse blocks. Fuse Identification and Function Turn ignition switch to the ON position (do not start en- gine).

  • Page 58: Indicator Lights

    Indicator Lights Glow Plug Indicator Light The glow plug light should come on when the ignition switch is placed in ON/PREHEAT prior to placing the ignition switch in START. The light should stay lit for approximately seven (7) seconds while the ignition switch is left in ON.

  • Page 59: Lower/Raise Control Lever Switches

    Lower/Raise Control Lever Switches The cutting unit raise and lower switches are located on 7. Replace raise and lower switch if testing identifies the joystick assembly that is attached to the control pan- that switch is faulty. el. The rear switch is used to lower the cutting units and 8.

  • Page 60: Enable/Disable Switch

    Enable/Disable Switch The enable/disable switch is located on the control 7. After testing is completed, connect the wire harness panel (Fig. 21). This switch is pulled out to engage the connector to the enable/disable switch. Install control cutting units and pushed in to disengage the cutting panel cover.

  • Page 61: Light Switch

    Light Switch The light switch is located on the control panel (Fig. 24). This rocker switch allows the headlights to be turned on and off. Testing 1. Park machine on level surface, lower cutting units, stop engine, apply parking brake and remove key from ignition switch.

  • Page 62: Main Power And Glow Relays

    Main Power and Glow Relays The main power and glow relays are secured to the con- continuity between terminals 30 and 87 as +12 VDC is trol panel assembly next to the operator seat (Fig. 26). applied and removed from terminal 85. These relays are attached to the wire harness with a four 7.

  • Page 63: Start Relay

    Start Relay The start relay is secured to the control panel assembly 9. Disconnect voltage and multimeter test leads from next to the operator seat (Fig. 28). This relay is attached the relay terminals. to the wire harness with a five (5) wire connector (Fig. 10.After testing is completed, secure relay to mounting 29).

  • Page 64: Parking Brake Switch

    Parking Brake Switch The parking brake switch is a normally open proximity C. Verify that the machine wire harness connector switch that is located on the control console (Fig. 30). terminal for black wire is closed (continuity) to The sensing plate that closes the switch is the parking ground.

  • Page 65: Toro Electronic Controller (Tec)

    Toro Electronic Controller (TEC) The Reelmaster 3550--D uses a Toro Electronic Control- ler (TEC) to monitor the condition of various switches (inputs) and then directs power output to allow certain machine functions. The controller is located under the control panel (Fig. 31). The handheld Diagnostic Dis-...

  • Page 66: Fusible Link Harness

    Fusible Link Harness The Reelmaster 3550--D uses three (3) fusible links for circuit protection. These fusible links are located in a harness that connects the starter B+ terminal to the main wire harness. If any of these links should fail, cur- rent to the protected circuit will cease.

  • Page 67: Service And Repairs

    Service and Repairs NOTE: For engine component repair information, see the Kubota Workshop Manual: 05 Series Diesel Engine. Battery Storage If the machine will be stored for more than 30 days: 4. Store battery in a cool atmosphere to avoid quick de- terioration of the battery charge.

  • Page 68: Battery Service

    Battery Service The battery is the heart of the electrical system. With regular and proper service, battery life can be extended. Additionally, battery and electrical component failure can be prevented. CAUTION When working with batteries, use extreme cau- tion to avoid splashing or spilling electrolyte. Electrolyte can destroy clothing and burn skin or eyes.
  • Page 69 Battery Testing C. Make sure battery terminals are free of corrosion. 1. Conduct a hydrometer test of the battery electrolyte. D. Measure the temperature of the center battery cell. IMPORTANT: Make sure the area around the cells is clean before opening the battery caps. E.
  • Page 70 Battery Charging CAUTION To minimize possible damage to the battery and allow the battery to be fully charged, the slow charging meth- od is presented here. This charging method can be ac- Do not charge a frozen battery because it can ex- complished with a constant current battery charger plode and cause injury.
  • Page 71 Chapter 6 Chassis Table of Contents SPECIFICATIONS ......GENERAL INFORMATION ..... Operator’s Manuals .
  • Page 72 Specifications Item Description Tire pressure 12 PSI (96 kPa) Wheel lug nut torque 45 to 65 ft--lb (61 to 88 N--m) Chassis Page 6 - - 2 Reelmaster 3550--D...
  • Page 73 General Information Operator’s Manual The Traction Unit and Cutting Unit Operator’s Manuals provide information regarding the operation, general maintenance and maintenance intervals for your Reel- master machine. Refer to these publications for addi- tional information when servicing the machine. Parts Catalogs The Traction Unit and Cutting Unit Parts Catalogs can be used to provide disassembly and assembly informa- tion for the chassis on your Reelmaster machine.
  • Page 74 This page is intentionally blank. Chassis Page 6 - - 4 Reelmaster 3550--D...
  • Page 75 Chapter 7 DPA Cutting Units Table of Contents SPECIFICATIONS ......GENERAL INFORMATION ..... Cutting Unit Operator’s Manual .

  • Page 76: Specifications

    Specifications Figure 1 Frame Construction: Precision machined die cast alu- Bedknife: Replaceable, single edged, EdgeMax minum cross member with two (2) bolt--on cast alumin- bedknife is fastened to a machined cast iron bedbar with um side plates. screws. Optional bedknifes are available. Reel Construction: Reels are 18 inches (45.7 cm) in Bedknife Adjustment: Dual screw adjustment to the length and 5 inch (12.7 cm) in diameter.

  • Page 77: General Information

    General Information Cutting Unit Operator’s Manual The Cutting Unit Operator’s Manual provides informa- tion regarding the operation, general maintenance and maintenance intervals for the DPA cutting units on your Reelmaster machine. Additionally, if optional kits have been installed on the cutting units (e.g. rear roller brush), the installation instructions for the kit includes set--up and operation information.

  • Page 78: Special Tools

    Special Tools Special tools are available from your Toro Distributor. Some tools may have been supplied with your machine or are available as TORO parts. Gauge Bar Assembly Toro Part Number: 108- -6715 Use gauge bar to verify height--of--cut adjustment.
  • Page 79 Bedknife Screw Tool Toro Part Number: TOR510880 This screwdriver--type bit is made to fit Toro bedknife at- taching screws. Use this bit with a torque wrench to se- cure the bedknife to the bedbar. IMPORTANT: To prevent damage to the bedbar, DO NOT use an air or manual impact wrench with this tool.
  • Page 80 Spline Insert Tool Toro Part Number: TOR4112 (8 tooth) Use the spline insert tool for rotating the cutting reel when hydraulic motor is removed. Also, use this tool for installation of threaded inserts into the cutting reel shaft. Figure 8...
  • Page 81 This tool should be used with the Toro Guide to Evaluation Reel Mower Performance and Using the TurfEvaluator (Toro part no. 97931SL).

  • Page 82: Factors That Can Affect Cutting Performance

    NOTE: For additional information regarding cutting unit cutting unit. It is important to remember that the lower troubleshooting, see Aftercut Appearance Trouble- the height--of--cut, the more critical these factors are. shooting Aid (Toro part no. 00076SL). Factor Possible Problem/Correction Tire pressure Check tire pressure of all traction unit tires.
  • Page 83 Factor Possible Problem/Correction Reel and bedknife sharpness A reel and/or bedknife that has rounded cutting edges or “rifling” (grooved or wavy appearance) cannot be corrected by tightening the bedknife to reel contact. Grind cutting reel to remove taper and/or rifling. Grind bedknife to sharpen and/or remove rifling.
  • Page 84 Factor Possible Problem/Correction Roller condition and roller type Make sure that front and rear rollers rotate freely. Repair roller bearings as necessary. See Roller Service in the Service and Repairs section of this chapter. Refer to Cutting Unit Operator’s Manual for roller options.
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  • Page 86: Set Up And Adjustments

    Set Up and Adjustments Characteristics If a cutting unit is determined to be out of adjustment, CAUTION complete the following procedures in the specified order to adjust the cutting unit properly. NOTE: See Cutting Unit Operator’s Manual for cutting Never install or work on the cutting units or lift unit adjustment procedures for your Reelmaster.

  • Page 87: Service And Repairs

    Service and Repairs Hydraulic Reel Motor IMPORTANT: When performing maintenance pro- cedures on the cutting units, carefully position the cutting unit reel motors to prevent damage to the motors or hydraulic hoses. Removal 1. Park machine on a clean and level surface, lower cutting units completely to the ground, stop engine, en- gage parking brake and remove key from the ignition switch.

  • Page 88: Cutting Unit Removal And Installation

    Cutting Unit Removal and Installation Cutting Unit Removal 1. Park machine on a clean and level surface, lower cutting units completely to the ground, stop engine, en- gage parking brake and remove key from the ignition switch. 2. Remove hydraulic reel motor from cutting unit that is to be removed (see Hydraulic Reel Motor in this sec- tion).
  • Page 89 3. Install cutting unit to lift arm pivot yoke: A. Slide cutting unit under the lift arm while inserting the carrier frame shaft up into the pivot yoke on lift arm (Fig. 17). B. Place the cap over the carrier frame shaft and pivot yoke.

  • Page 90: Backlapping

    3. Reel speed knob NOTE: Instructions and procedures on backlapping 2. Backlap lever are available in the Traction Unit Operator’s Manual and the Toro General Service Training Book, Reel Mower Basics (part no. 09168SL). Figure 21 1. Long Handle Brush...
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  • Page 92: Bedknife Replacement And Grinding

    Bedknife Replacement and Grinding 18” Cutting Unit Components Shown Lightly Oil Antiseize Bedbar Surface Lubricant 250 to 300 in- -lb (29 to 33 N- -m) Figure 22 1. Screw 2. Bedbar 3. Bedknife Bedknife Removal 2. Make sure that screw threads bedbar (5/16--18UNC--2A) are clean.
  • Page 93 Remove small amounts of mate- rial with each pass of the grinder. Also, clean and dress grinding stone often during the grinding process. 1. Use Toro General Service Training Book, Reel Mow- er Basics (part no. 09168SL) and grinder manufactur- Figure 23 er’s instructions for bedknife grinding information.

  • Page 94: Preparing Reel For Grinding

    1. Follow reel grinder manufacturer’s instructions to Blade Land Width Range 0.050 to 0.070 in (1.3 to 1.8 mm) grind cutting reel to Toro specifications (see Reel Grind- ing Specifications chart to the right). Additional reel Service Limit - 0.010 in (0.25 mm)
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  • Page 96: Roller Service

    Roller Service Disassembly (Fig. 26) 50 to 60 ft- -lb 1. Remove bearing lock nut from each end of roller (68 to 81 N- -m) shaft. 2. Loosely secure roller assembly in bench vise and lightly tap one end of roller shaft until outer seals and bearing are removed from opposite end of roller tube.
  • Page 97 3. From the roller tube end with only the inner seal installed, carefully install the roller shaft into the roller tube. Make sure that seals are not damaged as shaft is installed. 4. Install new bearing and outer seals into second end of roller tube: A.
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  • Page 99 Chapter 8 Foldout Drawings Table of Contents HYDRAULIC SCHEMATIC ..... ELECTRICAL SCHEMATIC ....Reelmaster 3550--D Page 8 - - 1 Foldout Drawings...
  • Page 100 This page is intentionally blank. Foldout Drawings Page 8 - - 2 Reelmaster 3550--D...
  • Page 101 Steering Cylinder 2.00” Bore 0.625” Rod 1.50” Bore 1.50” Bore 1.50” Bore 1.50” Bore 3.79” Stroke 0.625” Rod 0.625” Rod 0.625” Rod 0.625” Rod 2.25” Stroke 2.33” Stroke 2.33” Stroke 2.25” Stroke REEL #4 REEL #1 REEL #5 REEL #2 REEL #3 .046”...
  • Page 102 Reelmaster 3550--D Electrical Schematic All relays and solenoids are shown as de- - energized. All ground wires are black. Page 8 - - 4...

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