Reverse 4WD Kit

LT-F3000 Triple Flail, LT3340 Triple Reel, or LT2240 Compact Triple Turf Mower

Model No. 02858-Serial No. 400000000 and Up

This kit provides improved traction in reverse when traction is reduced in certain ground conditions.

Installation

Preparing to Install the Kit

Washing the Machine

Important: Before installing this kit, you must thoroughly clean the machine to avoid contaminating the hydraulic system—a clean machine is required.

Wash the machine; refer to washing the machine in the Operator’s Manual for your machine.

Preparing the Machine

  1. Park the machine on a level surface.

  2. Lower the cutting units.

  3. Engage the parking brake.

  4. Shut off the engine and remove the key.

  5. Wait for all moving parts to stop.

  6. Allow the engine to cool completely.

Opening the Hood

Models 31654

Unlatch and open the hood.

Removing the Storage Compartment

Models 31657 and 31659

  1. At the left side of the operator’s platform, open the door of the storage compartment (Figure 1).

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    Figure 1

    1. Washer
    2. Knob
    3. Storage compartment

  2. Remove the 3 knobs and 3 washers that secure the storage compartment to the machine, and remove the compartment (Figure 1).

Disconnecting the Battery

  1. Loosen the forward nut of the negative battery-cable terminal (Figure 2).

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    Figure 2

    1. Nut (negative battery-cable terminal)
    2. Negative battery post

  2. Lift the negative battery cable from the battery post (Figure 2).

    Note: Position the negative-battery cable where it cannot contact the negative battery post.

Installing the Rear Traction-Manifold Solenoids

Parts needed for this procedure:

High-pressure valve2
Coil2
Nut2

  1. At the back of the machine, remove the check valve from port-CV of the traction manifold (Figure 3).

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    Figure 3

    1. Check valve
    2. Port-CV (rear traction manifold)

  2. Assemble the high-pressure valve into port-CV (Figure 4).

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    Figure 4

    1. High-pressure valve
    2. Port-CV (rear traction manifold)

  3. Torque the high-pressure valve to 110 N∙m (81 ft-lb).

  4. Assemble the coil and nut onto high-pressure valve as shown in Figure 5.

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    Figure 5

    1. Coil
    2. High-pressure valve
    3. Nut

  5. Torque the nut to 8 N∙m (6 ft-lb).

  6. Remove the cap from the 2-socket connector of the machine wire harness labeled REVERSE SOLENOID (Figure 6).

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    Figure 6

    1. 2-socket connector—machine wire harness (labeled REVERSE SOLENOID)
    2. 2-pin connector—coil

  7. Plug the 2-socket connector REVERSE SOLENOID into the 2-pin connector of the coil (Figure 6).

  8. Repeat steps 1 through 7 at the other side of the rear traction manifold.

Installing the Quick-Connect Test Fitting

Machines without the Optional Road Light Kit or Differential-Lock Kit

Parts needed for this procedure:

Adapter fitting (1/4 x 7/16 inch)—Model 31654, and Models 31657 and 31659 with the optional differential-lock kit.1
Seal (1/4)—Models 31657 and 31659 with the optional differential-lock kit.1
Quick-connect fitting—Model 31654, and Models 31657 and 31659 without the optional differential-lock kit.1
Dust cap—machines without the optional road light kit.1
Reducer fitting (3/4 x 7/16 inch)—Models 31657 and 31659 without the optional differential-lock kit.1

Installing the Quick Connect Fitting

Model 31654

  1. At the right side of the traction pump, remove the plug from the T-fitting in port-B of the traction pump (Figure 7 and Figure 8).

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    Figure 7

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    Figure 8

    1. T-fitting (port-B—traction pump)
    2. Plug
    3. Adapter fitting (1/4 x 7/16 inch)

  2. Assemble the adapter fitting (1/4 x 7/16 inch) into the T-fitting (Figure 8).

  3. Torque the assemble the adapter to 34 to 41 N∙m (25 to 30 ft-lb).

  4. Assemble the quick-connect fitting into the adapter fitting (Figure 9).

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    Figure 9

    1. Adapter fitting
    2. Quick-connect fitting
    3. Dust cap

  5. Torque the quick-connect fitting to 27 N∙m (20 ft-lb).

  6. Assemble the retainer of the dust cap onto the quick-connect fitting (Figure 9).

  7. You will install the cap over the fitting in Installing the Dust Cap.

Installing the Quick Connect Fitting

Models 31657 and 31659

  1. At the right side of the traction pump, remove the plug from port-MB of the traction pump (Figure 9 and Figure 11).

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    Figure 10

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    Figure 11

    1. Port-MB (traction pump)
    2. Plug
    3. Reducer fitting (3/4 x 7/16 inch)

  2. Assemble the reducer fitting (3/4 x 7/16 inch) into port-MB of the traction pump (Figure 11).

  3. Torque the reducer fitting to 81 N∙m (60 ft-lb).

  4. Assemble the quick-connect fitting into the reducer fitting (Figure 12).

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    Figure 12

    1. Reducer fitting
    2. Quick-connect fitting
    3. Dust cap

  5. Torque the quick-connect fitting to 27 N∙m (20 ft-lb).

  6. Assemble the retainer of the dust cap onto the quick-connect fitting (Figure 12).

    Note: You will install the cap over the fitting in Installing the Dust Cap.

Preparing to Test the Hydraulic Pressure

Model 31654

Parts needed for this procedure:

Hydraulic test equipment 260 to 325 bar (3771 to 4714 psi), with a quick-disconnect fitting (facility provided).

Installing the Quick-Connect Fitting

Machines with the Optional Road Light Kit

  1. At the right side of the traction pump, remove the 3-pin connector labeled BRAKE PRESSURE SENSOR from the brake-pressure transducer (Figure 13).

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    Figure 13

    1. Brake-pressure transducer
    2. 3-pin connector (labeled BRAKE PRESSURE SENSOR)

  2. Remove the brake-pressure transducer from the adapter at T-fitting of traction pump port-B (Figure 14).

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    Figure 14

    1. Adapter fitting (T-fitting—traction pump port-B)
    2. Brake-pressure transducer

  3. Assemble the quick-connect fitting into the adapter fitting (Figure 15).

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    Figure 15

    1. Adapter fitting
    2. Quick-connect fitting

  4. Torque the quick-connect fitting to 27 N∙m (20 ft-lb).

  5. Assemble the test equipment onto the quick-connect fitting (Figure 16).

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    Figure 16

  6. Connect the battery, lower the hood, and perform the hydraulic-pressure test; refer to Connecting the Battery, Closing the Hood, and Testing the Hydraulic Pressure.

Preparing the Traction Pump

Machines with and without the Optional Road Light Kit

  1. At the right side of the traction pump, assemble the test equipment onto the quick-connect fitting (Figure 17).

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    Figure 17

  2. Connect the battery, lower the hood, and perform the hydraulic-pressure test; refer to Connecting the Battery, Closing the Hood, and Testing the Hydraulic Pressure.

Preparing to Test the Hydraulic Pressure

Models 31657 and 31659

Parts needed for this procedure:

Hydraulic test equipment 260 to 325 bar (3771 to 4714 psi) with a Quick-Connect Fitting (machines without the optional differential-lock kit) or a Minimess™ fitting (machines with the optional differential-lock kit)—facility provided.

Installing the Quick-Connect Fitting

Machines with the Optional Road Light Kit—and without the Optional Differential-Lock Kit

  1. At the right side of the traction pump, remove the 3-pin connector labeled BRAKE PRESSURE SENSOR from the brake-pressure transducer (Figure 18).

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    Figure 18

    1. 3-pin connector (labeled BRAKE PRESSURE SENSOR)
    2. Brake-pressure transducer

  2. Remove the brake-pressure transducer (Figure 19) from the reducer fitting (3/4 x 7/16 inch).

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    Figure 19

    1. Reducer fitting (3/4 x 7/16 inch)
    2. Brake-pressure transducer

  3. Assemble the quick-connect fitting (Figure 20) into the reducer fitting.

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    Figure 20

    1. Reducer fitting (3/4 x 7/16 inch)
    2. Quick-connect fitting

  4. Torque the quick-connect fitting to 27 N∙m (20 ft-lb).

  5. Assemble the test equipment onto the quick-connect fitting (Figure 21).

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    Figure 21

  6. Connect the battery, install the storage compartment, and perform the hydraulic-pressure test; refer to Connecting the Battery, Installing the Storage Compartment, and Testing the Hydraulic Pressure.

Preparing the Traction Pump

Machines with and without the Optional Road Light Kit—and without the Optional Differential-Lock Kit

  1. At the right side of the traction pump, assemble the test equipment onto the quick-connect fitting (Figure 22).

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    Figure 22

  2. Connect the battery, install the storage compartment, and perform the hydraulic-pressure test; refer to Testing the Hydraulic Pressure.

Preparing the Forward Traction Manifold

Machines with the Optional Differential-Lock Kit

  1. Unlatch and raise the operator’s platform; refer to the Operator’s Manual.

  2. At the front traction manifold, remove the dust cap from the Minimess fitting in port-TPB (Figure 23).

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    Figure 23

    1. Dust cap
    2. Minimess fitting (port-TPB—front traction manifold)

  3. Assemble the test equipment onto the Minimess fitting (Figure 24).

    Note: Place the test equipment at a location so that you can lower the platform and start the engine.

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    Figure 24

  4. Lower and latch the platform; refer to the Operator’s Manual.

  5. Connect the battery, install the storage compartment, and perform the hydraulic-pressure test; refer to Testing the Hydraulic Pressure.

Connecting the Battery and Installing the Storage Compartment

Connecting the Battery

  1. Assemble the terminal of the negative battery cable (Figure 25) onto the negative battery post.

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    Figure 25

    1. Nut (negative battery-cable terminal)
    2. Negative battery post

  2. Tighten the forward nut and T-bolt (Figure 25) of the negative battery cable terminal.

Closing the Hood

Models 31654

Close and latch the hood.

Installing the Storage Compartment

Models 31657 and 31659

  1. Align the holes on the bottom of the storage compartment with the holes in the chassis brackets.

  2. Assemble the storage compartment to the machine with the 3 knobs and 3 washers (Figure 26).

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    Figure 26

    1. Washer
    2. Knob
    3. Storage compartment

  3. Close the storage-compartment door.

Testing the Hydraulic Pressure

  1. Start the engine and move the machine to a level, open area.

    Important: The area to the rear and around the machine must be clear.

  2. Ensure that the parking brake switch is on the ENGAGED position.

  3. Set the engine speed to idle.

  4. Run the engine to warm the coolant to 70 to 75°C (160 to 170 °F).

  5. Sitting in the seat with the park brake engaged, gradually press the reverse traction pedal.

    Important: If the reverse pedal is pressed gradually and gently, the park brake should keep the machine from moving backward.

  6. Observe the pressure gauge for stable measurement of the maximum hydraulic pressure while pressing the reverse pedal.

  7. Record the maximum hydraulic-pressure measurement here: .

  8. Compare the maximum hydraulic pressure that you measured with the normal pressure range in the Hydraulic-Pressure Table.

    Hydraulic-Pressure Table

    Model

    Normal Pressure Range

    31654

    300 to 325 bar (4351 to 4713 psi)

    31657 and 31659

    260 to 280 bar (3771 to 4061 psi)

    Important: If the hydraulic pressure measurements are lower than or higher than the normal pressure range, contact Toro customer care.

  9. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operator’s position.

Finishing the Hydraulic Test

Model 31654

Installing the Brake-Pressure Transducer

Machines with the Optional Road Light Kit

  1. Disconnect the test equipment from the quick-connect fitting (Figure 27).

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    Figure 27

  2. Remove the quick-connect fitting from the adapter fitting (Figure 28).

    Note: Retain the quick-connect fitting.

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    Figure 28

    1. Adapter fitting
    2. Quick-connect fitting

  3. Assemble the brake-pressure transducer into the adapter fitting (Figure 29).

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    Figure 29

    1. Adapter fitting (1/4 x 7/16 inch)
    2. Brake-pressure transducer

  4. Torque the brake-pressure transducer to 27 N∙m (20 ft-lb).

  5. Plug the 3-pin connector of the machine wire harness labeled BRAKE PRESSURE SENSOR into the connector of the pressure transducer (Figure 30).

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    Figure 30

    1. Brake-pressure transducer
    2. 3-pin connector (labeled BRAKE PRESSURE SENSOR)

Installing the Dust Cap

Machines without the Optional Road Light Kit

  1. Disconnect the test equipment from the quick-connect fitting (Figure 31).

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    Figure 31

  2. Assemble the dust cap over the quick-connect fitting (Figure 32).

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    Figure 32

Finishing the Hydraulic Test

Models 31657 and 31659

Installing the Brake-Pressure Transducer

Machines with the Optional Road Light Kit—and without the Optional Differential-Lock Kit

  1. Disconnect the test equipment from the quick-connect fitting (Figure 33).

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    Figure 33

  2. Remove the quick-connect fitting from the reducer fitting (Figure 34).

    Note: Retain the quick-connect fitting.

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    Figure 34

    1. Reducer fitting (3/4 x 7/16 inch)
    2. Quick-connect fitting

  3. Assemble the brake-pressure transducer (Figure 35) into the reducer fitting (3/4 x 7/16 inch).

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    Figure 35

    1. Reducer fitting (3/4 x 7/16 inch)
    2. Brake-pressure transducer

  4. Torque the transducer to 27 N∙m (20 ft-lb).

  5. Plug the 3-pin connector of the machine wire harness labeled BRAKE PRESSURE SENSOR into the connector of the pressure transducer (Figure 36).

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    Figure 36

    1. 3-pin connector (labeled BRAKE PRESSURE SENSOR)
    2. Brake-pressure transducer

Installing the Dust Cap

Machines without the Optional Road Light Kit or the Optional Differential-Lock Kit

  1. At the right side of the traction pump, remove the test equipment from the quick-connect fitting (Figure 37).

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    Figure 37

  2. Assemble the dust cap over the quick-connect fitting (Figure 38).

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    Figure 38

Installing the Dust Cap

Machines with the Optional Differential-Lock Kit

  1. Raise the operator’s platform; refer to the Operator’s Manual.

  2. Remove the test equipment from port-TPB of the front traction manifold (Figure 39).

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    Figure 39

  3. Install the dust cap over the Minimess fitting in port-TPB (Figure 40).

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    Figure 40

    1. Dust cap
    2. Minimess fitting (port-TPB—front traction manifold)

  4. Lower and latch the operator’s platform; refer to the Operator’s Manual.

Checking the Hydraulic-Fluid Level

Check the hydraulic fluid level in the tank—add hydraulic fluid as needed; refer to Checking the Hydraulic Fluid in the Operator’s Manual for your machine.