Toro TRX-16 Operator's Manual
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Toro TRX-16 Operator's Manual

Trencher
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Original Instructions (EN)
TRX-16, TRX-20, and TRX-26
Trencher
Model No. 22972—Serial No. 402461470 and Up
Model No. 22972G—Serial No. 402000000 and Up
Model No. 22973—Serial No. 402501800 and Up
Model No. 22973G—Serial No. 402000000 and Up
Model No. 22974—Serial No. 402000000 and Up
Form No. 3422-267 Rev A
*3422-267* A

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Summary of Contents for Toro TRX-16

  • Page 1 Form No. 3422-267 Rev A TRX-16, TRX-20, and TRX-26 Trencher Model No. 22972—Serial No. 402461470 and Up Model No. 22972G—Serial No. 402000000 and Up Model No. 22973—Serial No. 402501800 and Up Model No. 22973G—Serial No. 402000000 and Up Model No. 22974—Serial No. 402000000 and Up *3422-267* A Register at www.Toro.com.

  • Page 2: Figure 1

    California to cause cancer, birth defects, or other reproductive harm. Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model DANGER and serial numbers of your product ready. Figure...

  • Page 3: Table Of Contents

    Replacing the Fuses (Models 22973 and 22974)............34 Drive System Maintenance ........34 g000502 Servicing the Tracks ......... 34 Figure 2 Belt Maintenance ..........37 Replacing the Pump-Drive Belt ......37 1. Safety-alert symbol Controls System Maintenance ......37 Adjusting the Traction-Control This manual uses 2 words to highlight information.

  • Page 4: Safety

    Safety • Inspect the area where you will use the equipment and remove all objects, such as rocks, toys, and wire, that the machine could throw. Improper use or maintenance by the operator or • Check that the operator's presence controls, safety owner can result in injury.
  • Page 5 and remove the key before leaving the operator's embankments, water or other hazards. The position for any reason. machine could suddenly roll over if a wheel or track goes over the edge or the edge collapses. Keep • Keep your hands and feet away from moving parts. a safe distance (twice the width of the machine) •...

  • Page 6: Safety And Instructional Decals

    • Battery acid is poisonous and can cause burns. • Use only genuine Toro replacement parts. Avoid contact with skin, eyes, and clothing. Protect • Keep your body and hands away from pinhole your face, eyes, and clothing when working with a battery.
  • Page 7 decal93-9084 93-9084 1. Lift point/Tie-down point decal137-3873 137-3873 1. Read the Operator’s Manual. decal100-4650 100-4650 1. Crushing hazard of hand—keep bystanders a safe distance away from the machine. 2. Crushing hazard of foot—keep bystanders a safe distance away from the machine. decal107-8495 107-8495 decal137-3874...
  • Page 8 decal115-4020 115-4020 1. Turn right 3. Reverse 2. Forward 4. Turn left decal99-9952 99-9952 1. Cutting hazard, chain and auger—stay away from moving parts and keep bystanders away from the machine. 2. Warning—shut off the engine and remove the key before preforming and maintenance or repairs. 3.
  • Page 9 decal115-1230 115-1230 1. Warning—do not operate this machine unless you are trained. 2. Engine—stop 3. Engine—run 4. Trencher chain—reverse 5. Trencher chain—forward 6. Trencher chain—off 7. Engine throttle 8. Fast 9. Slow 10. Choke 11. On/Closed 12. Off/Open 13. Read the Operator's Manual before starting the engine; to start the engine, move the trencher-control lever into the O position, place the traction control in the N position, move the throttle lever to the F...
  • Page 10 decal115-1231 115-1231 1. Cutting/dismemberment hazard of bystanders, 6. Explosion hazard; shock hazard—do not use machine near trencher—keep bystanders a safe distance away from the buried utility lines; contact the proper agencies before digging. machine; do not operate the trencher chain while transporting the machine.

  • Page 11: Setup

    Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure Description Qty. Boom (sold separately) Install the boom and chain. Chain (sold separately) – No parts required Check the fluid levels. Charge the battery (electric-start models –...

  • Page 12: Checking The Fluid Levels

    Product Overview Loop the digging chain over the auger drive shaft and onto the drive sprocket, ensuring that the digging teeth point forward on the upper span. Set the upper span of the chain into place on the trencher boom, then wrap the chain around the roller at the end of the boom.

  • Page 13: Key Switch

    Key Switch Traction Control Recoil-Start Machines The key switch has 2 positions: O and R . Refer Starting the Engine (page 17). Electric-Start Machines The key switch has 3 positions: O , and S TART Refer to Starting the Engine (page 17).
  • Page 14 • To turn right, rotate the traction control clockwise (Figure g008131 Figure 9 g007802 • To turn left, rotate the traction control Figure 11 counterclockwise (Figure 10). 1. Lower the boom 2. Raise the boom Boom-Elevation Lock The boom-elevation lock secures the boom-elevation lever so that you cannot push it forward.

  • Page 15: Specifications

    3. Neutral 2. Reverse to enhance and expand its capabilities. Contact your Authorized Service Dealer or authorized Toro distributor or go to www.Toro.com for a list of all approved attachments and accessories. Parking-Brake Lever To ensure optimum performance and continued safety •...

  • Page 16: Operation

    Operation DANGER In certain conditions during fueling, static Note: Determine the left and right sides of the electricity can be released, causing a spark machine from the normal operating position. that can ignite the fuel vapors. A fire or explosion from fuel can burn you and others Important: Before operating the machine, check and can damage property.

  • Page 17: Performing Daily Maintenance

    • Do not store fuel either in the fuel tank or fuel Install the fuel-tank cap securely. containers over the winter unless you use a fuel Wipe up any spilled fuel. stabilizer. • Do not add oil to gasoline. Performing Daily Using Stabilizer/Conditioner Maintenance Use a fuel stabilizer/conditioner in the machine to...

  • Page 18: Driving The Machine

    Move the throttle lever to the desired setting CAUTION (Figure 16). A child or untrained bystander could Important: Running the engine at high attempt to operate the machine and be speeds when the hydraulic system is cold injured. (i.e., when the air temperature is at or Remove the key from the switch when below freezing) could damage the hydraulic system.

  • Page 19: Moving A Non-Functioning Machine

    Securing the Machine for the chain and lower it fully. Start the chain again and resume operation. Transport Once the trencher boom is in the ground at a 45° to 60° angle, slowly move the machine rearward Important: Do not operate or drive the machine to extend the trench.

  • Page 20: Operating Tips

    Operating Tips • Use the correct chain for the ground conditions, as listed in the following table: • Clean the area of trash, branches, and rocks Soil Type Recommended Chain Type before trenching to prevent damaging the machine. Sandy Soil chain (configure with •...

  • Page 21: Maintenance

    Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Maintenance Procedure Interval • Change the engine oil. After the first 8 hours • Check and adjust the track tension. After the first 50 hours •...

  • Page 22: Pre-Maintenance Procedures

    CAUTION If you leave the key in the key switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the key switch and disconnect the wires from the spark plugs before you do any maintenance. Set the wires aside so that they do not accidentally contact the spark plugs.

  • Page 23: Removing The Bottom Shield

    Removing the Bottom Lubrication Shield Greasing the Machine Park the machine on a level surface, engage the parking brake (if applicable), and lower the Service Interval: Before each use or daily (Grease hydraulic lift. immediately after every washing.) Shut off the engine and remove the key. Grease Type: General-purpose grease.

  • Page 24: Greasing The Trencher Housing

    Greasing the Trencher Housing Service Interval: Every 40 hours Grease Type: General-purpose grease. Park the machine on a level surface, engage the parking brake, and lower the hydraulic lift. Shut off the engine and remove the key. Clean the trencher housing grease fitting with a g007823 rag and connect a grease gun to it (Figure...

  • Page 25: Engine Maintenance

    Engine Maintenance Servicing the Air Cleaner Models 22972 and 22973 Service Interval: Every 25 hours—Clean the foam air-cleaner element (more often in dirty or dusty conditions)—Models 22972 and 22973 only. Every 100 hours—Check the paper air-cleaner element (more often in dirty or dusty conditions)—Models 22972 and 22973 only.
  • Page 26 Model 22974 Servicing the Primary Filter Inspect the primary filter for damage by looking into Service Interval: Every 250 hours (more often in dirty the filter while shining a bright light on the outside of or dusty conditions)—Model 22974 the filter. only.

  • Page 27: Servicing The Engine Oil

    Servicing the Engine Oil Checking the Engine-Oil Level Park the machine on a level surface, engage Service Interval: After the first 8 hours—Change the the parking brake (if applicable), and lower the engine oil. hydraulic lift. Before each use or daily—Check the engine-oil Shut off the engine and remove the key.
  • Page 28 Changing the Engine Oil Start the engine and let it run 5 minutes. This warms the oil so it drains better. Park the machine so that the drain side is slightly lower than the opposite side to ensure that the oil drains completely.

  • Page 29: Servicing The Spark Plug

    Changing the Engine-Oil Filter Servicing the Spark Plug Drain the oil from the engine; refer to Changing Service Interval: Every 100 hours the Engine Oil (page 28). Make sure that the air gap between the center and Change the engine-oil filter (Figure 34).

  • Page 30: Fuel System Maintenance

    Checking the Spark Plug Fuel System Important: Do not clean the spark plug(s). Maintenance Always replace the spark plug(s) when it has: a black coating, worn electrodes, an oily film, or cracks. Draining the Fuel Tank If you see light brown or gray on the insulator, the engine is operating properly.

  • Page 31: Replacing The Fuel Filter

    Replacing the Fuel Filter Electrical System Maintenance Service Interval: Every 200 hours Never install a dirty filter if it is removed from the fuel line. Servicing the Battery Note: Note how the fuel filter is installed in order to Electric-Start Machines Only install the new filter correctly.
  • Page 32 Slide the red terminal boot off the positive (red) WARNING battery terminal. Then remove the positive (red) Battery terminals or metal tools could short battery cable (Figure 40). against metal components, causing sparks. Remove the hold down plate, j-bolts, and Sparks can cause the battery gasses to locknuts securing the battery (Figure...
  • Page 33 Rinse the battery with clear water. g000537 Coat the battery posts and cable connectors with Figure 42 Grafo 112X (skin-over) grease (Toro Part No. 505-47) or petroleum jelly to prevent corrosion. 1. Vent caps 3. Lower line 2. Upper line Install the battery;...

  • Page 34: Replacing The Fuses (Models 22973 And 22974)

    Replacing the Fuses Drive System (Models 22973 and 22974) Maintenance There are 4 fuses in the electrical system. They are under the control panel on the left side (Figure 43). Servicing the Tracks 30 amp Start Circuit Charge Circuit 25 amp Cleaning the Tracks Cooler fan Circuit 15 amp...
  • Page 35 Checking and Adjusting the Track is applied to the track span. Adjust the torque on the tensioning bolt as needed. Tension Tighten the jam nut. Service Interval: After the first 50 hours Tighten the clamp bolts and torque to 102 N∙m Every 100 hours (75 ft-lb).
  • Page 36 Checking and Greasing the Road Wheels Service Interval: Every 250 hours Park the machine on a level surface, engage the parking brake, and lower the hydraulic lift. Shut off the engine and remove the key. Remove the tracks; refer to Replacing the Tracks (page 35).

  • Page 37: Belt Maintenance

    Belt Maintenance Controls System Maintenance Replacing the Pump-Drive Belt Adjusting the Traction-Control Alignment If the pump drive belt begins to squeal or is cracked, worn, or frayed, replace it. Contact your Authorized Service Dealer for a replacement belt. The factory adjusts the traction controls before shipping the machine.
  • Page 38 g004191 Figure 52 1. Traction control 2. Stem, bolt, and nut Adjust the traction control so that it rests flush against the reference bar when it is pulled g011476 Figure 54 straight back (Figure 52 Figure 53). 1. Traction rod 2.

  • Page 39: Hydraulic System Maintenance

    Toro Premium All Season Hydraulic Fluid (refer to your Authorized Toro Dealer for more information) • If either of the above Toro fluids are not available, you may use another Universal Tractor Hydraulic Fluid (UTHF), but they must be only conventional, petroleum-based products. The...

  • Page 40: Checking The Hydraulic-Fluid Level

    20 ml (0.67 fl oz) bottles. One bottle is sufficient for 15 to 22 L (4 to 6 US gallons) of hydraulic fluid. Order Part No. 44-2500 from your Authorized Toro Dealer. g007839...

  • Page 41: Changing The Hydraulic Fluid

    Install the replacement hydraulic filter and filler (Figure 58) and torque the bolt on top to 13 to 15.5 N∙m (110 to 140 in-lb). Clean up any spilled fluid. Install the top cover. Changing the Hydraulic Fluid Service Interval: Every 400 hours/Yearly (whichever comes first) Park the machine on a level surface, engage the parking brake (if applicable), and lower the...

  • Page 42: Trencher Maintenance

    Trencher Maintenance Replacing the Digging Teeth Service Interval: Before each use or daily—Check the condition of the digging teeth and replace any that are worn or damaged. Due to the high amount of wear placed on the digging g007841 Figure 60 teeth, you will need to replace them periodically.

  • Page 43: Replacing The Drive Sprocket

    Tighten the jam nut. Slide the new sprocket onto the shaft (Figure 61). Torque the 2 bolts and nuts securing the boom to 183 to 223 N∙m (135 to 165 ft-lb). Important: The arrow on the sprocket face should be visible from the right side of the trench and should point in a clockwise Replacing the Drive direction;...

  • Page 44: Cleaning

    Cleaning Storage Park the machine on a level surface, engage the Removing Debris from the parking brake, and lower the hydraulic lift. Machine Shut off the engine, remove the key, and wait for the engine to cool. Important: Operating the engine with blocked Remove dirt and grime from the external parts of screens, dirty or plugged cooling fins, and/or the entire machine, especially the engine.
  • Page 45 With the spark plug removed from the engine, pour 2 tablespoons of engine oil into the spark-plug hole. Place a rag over the spark-plug hole to catch any oil spray, then use the starter or recoil handle to crank the engine and distribute the oil inside the cylinder.

  • Page 46: Troubleshooting

    Troubleshooting Problem Possible Cause Corrective Action The starter does not crank (electric-start 1. The battery is discharged. 1. Charge the battery or replace it. machines only). 2. The electrical connections are 2. Check the electrical connections for corroded or loose. good contact.
  • Page 47 Problem Possible Cause Corrective Action The trencher does not dig fast enough. 1. The digging teeth are worn. 1. Replace the digging teeth. 2. The chain you are using is not 2. Evaluate the ground type and change appropriate for the type of ground. chains if necessary.

  • Page 48: Schematics

    Schematics g015383 Electrical Schematic—Model 22972 (Rev. A)
  • Page 49 g015384 Electrical Schematic—Model 22973 (Rev. A)
  • Page 50 g015439 Electrical Schematic—Model 22974 (Rev. A)
  • Page 51 g028603 Hydraulic Schematic (Rev. C)
  • Page 52 Notes:...
  • Page 53 Notes:...
  • Page 54 Notes:...
  • Page 55 The Way Toro Uses Information Toro may use your personal information to process warranty claims, to contact you in the event of a product recall and for any other purpose which we tell you about. Toro may share your information with Toro's affiliates, dealers or other business partners in connection with any of these activities. We will not sell your personal information to any other company.
  • Page 56 While the exposure from Toro products may be negligible or well within the “no significant risk” range, out of an abundance of caution, Toro has elected to provide the Prop 65 warnings. Moreover, if Toro does not provide these warnings, it could be sued by the State of California or by private parties seeking to enforce Prop 65 and subject to substantial penalties.

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