Form No. 3354-661 Rev B TX 420 and TX 425 Compact Utility Loader Model No. 22331—Serial No. 260000001 and Up Model No. 22332—Serial No. 260000001 and Up Register your product at www.Toro.
Warning Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. The model and serial numbers are stamped into a plate mounted under the hood near the belt drive. Write the numbers in the space provided. CALIFORNIA Proposition 65 Warning The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Model No. Serial No.
Contents Draining the Fuel Tank ...................... 32 Electrical System Maintenance................... 33 Servicing the Battery.......................... 33 Drive System Maintenance......................... 34 Servicing the Tracks........................... 34 Belt Maintenance....................................... 37 Inspecting/Replacing the Drive Belt ................................... 37 Controls System Maintenance.................... 39 Adjusting the Traction Control Alignment ....................
Safety hearing protection. Long hair, loose clothing or jewelry may get tangled in moving parts. Improper use or maintenance by the operator or owner can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety alert symbol , which means: Caution, Warning, or Danger—personal safety instruction. Failure to comply with the instruction may result in personal injury or death.
• Never carry passengers and keep pets and bystanders away. • Slow down and use caution when making turns and crossing roads and sidewalks. • Do not operate the machine under the influence of alcohol or drugs. • Use care when loading or unloading the machine into a trailer or truck. • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision. • Read all attachment manuals. • Ensure that the area is clear of other people before operating the traction unit.
• Avoid starting or stopping on a slope. If the traction unit loses traction, proceed slowly, straight down the slope. • Avoid turning on slopes. If you must turn, turn slowly and keep the heavy end of the traction unit uphill. • Do not operate near drop-offs, ditches, or embankments. The traction unit could suddenly turn over if a track goes over the edge of a cliff or ditch, or if an edge caves in. • Do not operate on wet grass. Reduced traction could cause sliding.
hydraulic fluid. Use cardboard or paper to find hydraulic leaks; never use your hands. Hydraulic fluid escaping under pressure can penetrate skin and cause injury requiring surgery within a few hours by a qualified surgeon or gangrene may result. Sound Pressure This unit has a maximum sound pressure level at the operator’s ear of 90 dBA, based on measurements of identical machines per EN 11201.
Slope Chart 8
Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. 108-4635 1. Read the Operator’s Manual. 5. 2. Fast 6. 3. Continuous variable setting 7. Throttle On Choke 9. Fuel 10. Hydraulic oil temperature 11. Hour meter 4. Slow Off 12. Engine—start 8. 13. Engine—run 14. Engine—stop 15. Warning—read the Operator’s Manual. 16.
4-9950 104-9954 1. Warning—read the Operator’s Manual; maximum load rating of 500 lb. (228 Kg). 1. Crushing hazard of hands or feet—install the cylinder lock. 104-9951 1. Hot surface/burn hazard—wear protective gloves when handling the hydraulic couplers and read the Operator’s Manual for information on handling hydraulic components. 108-4636 1. Auxiliary hydraulics 2. Locked reverse (detent) 3. 4. Forward Neutral (off) 108-4634 3. 4. 1. Traction Control 2.
93-7814 104-9983 1. Entanglement hazard, belt—stay away from moving parts. 1. Hot surface/burn hazard—stay a safe distance from the hot surface. 93-6686 1. 2. 93-9084 1. Lift point 2. Tie-down point 108-4616 11 Hydraulic oil Read the Operator’s Manual.
Setup Step 1 Figure 2 Activating the Battery 1. Battery 2. Battery clamp 3. Positive cable Parts needed for this step: 80 Bulk electrolyte with 1.265 specic gravity ounces (Purchase from a battery supply outlet.) 4. 5. 6. Rubber cover Negative cable Bolts and nuts 3. Tilt the top of the battery rearward and slide it out of the traction unit. Procedure Important: Do not allow the battery posts to touch the frame or hydraulic lines or it may cause sparks.
4 2 Incorrect battery cable routing could damage the traction unit and cables, causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. 3 1 • Always disconnect the negative (black) battery cable before disconnecting the positive (red) cable. G003792 • Always connect the positive (red) battery cable before connecting the negative (black) cable. Figure 4 1. Positive post 2. Negative post 3. 4. Charger red (+) wire Charger black (—) wire 11.
Product Overview Figure 6 1. 2. 3. 4. Track Track adjustment chamber Lift cylinder Cylinder lock 5. 6. 7. 8. Loader arms 9. Mount plate Hood 10. Tie-down/lift loop Auxiliary hydraulic couplers 11. Control panel 12. Rear access cover Tilt cylinder Controls 13. 14. Fuel tank Reverse safety plate To stop the engine, rotate the key to the off position. Become familiar with all the controls (Figure 7) before you start the engine and operate the traction unit.
To turn, rotate the traction control in the desired direction (Figure 8). The farther you move the traction control in any direction, the faster the traction unit will move in that direction. To stop, release the traction control. Figure 9 1. 2. 3. Lower the loader arms Raise the loader arms Tilt the attachment rearward 4. 5.
Auxiliary Hydraulics Lever To operate a hydraulic attachment in the forward direction, rotate the auxiliary hydraulics lever rearward and pull it down to the reference bar (Figure 11, number 1). To operate a hydraulic attachment in reverse direction, rotate the hydraulics lever rearward, then move it left into the upper slot (Figure 11, number 2). If you release the lever while in the forward position, the lever will automatically return to the neutral position (Figure 11, number 3).
Specications Note: Specifications and design are subject to change without notice. TX 420, Model 22331 Width 34 inches (86 cm) Length 71 inches (180 cm) Height 46 inches (117 cm) Weight 1880 lb (853 Kg) Operating capacity 500 lb (227 Kg) Tipping capacity 1480 lb (671 Kg) Wheelbase 31.
Stability Data The following tables list the maximum slope recommended for the traction unit in the positions listed in the tables. Slopes over the listed degree may cause the traction unit to become unstable. The data in the tables assume that the loader arms are fully lowered; raised arms may affect the stability. In each attachment manual is a set of three stability ratings, one for each hill position.
Operation In certain conditions during fueling, static electricity can be released causing a spark which can ignite the gasoline vapors. A fire or explosion from gasoline can burn you and others and can damage property. Note: Determine the left and right sides of the machine from the normal operating position. Important: Before operating, check the fuel and oil level, and remove debris from the traction unit. Also, ensure that the area is clear of people and debris.
Note: A fuel stabilizer/conditioner is most effective when mixed with fresh gasoline. To minimize the chance of varnish deposits in the fuel system, use fuel stabilizer at all times. Filling the Fuel Tank 1. Park the traction unit on a level surface, lower the loader arms, and stop the engine. 2. Remove the key and allow the engine to cool. 3. Clean around the fuel tank cap and remove it. Figure 14 4. Add unleaded gasoline to the fuel tank, until the level is just below the bottom of the filler neck. 1.
Important: If the engine is run at high speeds when the hydraulic system is cold (i.e., when the ambient air temperature is near freezing or lower), hydraulic system damage could occur. When starting the engine in cold conditions, allow the engine to run in the middle throttle position for 2 to 5 minutes before moving the throttle to fast (rabbit). Note: If outdoor temperature is below freezing, store the traction unit in a garage to keep it warmer and aid in starting. Figure 15 1. Filler neck cap 2.
2. Open the rear access cover. 3. Using a wrench, turn the tow valves on the hydraulic pumps twice counterclockwise (Figure 16). Figure 17 1. Cylinder lock 2. Lift cylinder 3. 4. Clevis pin Hairpin cotter 5. Lower the cylinder lock over the cylinder rod and secure it with the clevis pin and hairpin cotter (Figure 17). 6. Slowly lower the loader arms until cylinder lock contacts the cylinder body and rod end. Figure 16 1. Left tow valve (right track) 2.
Using Attachments Important: The attachment should be raised enough to clear the ground, and the mount plate should be tilted all the way back. Important: If you are using an attachment with a serial number of 200999999 or earlier, the manual for the attachment may contain information specific to the use of the attachment with other Dingo models, such as settings for the flow divider control and speed selector lever and the use of a counterweight on the traction unit.
Connecting the Hydraulic Hoses 8. Confirm that the connection is secure by pulling on the hoses. If the attachment requires hydraulics for operation, connect the hydraulic hoses as follows: 1. Stop the engine. 2. Move the auxiliary hydraulics lever forward, backward, and back to neutral to relieve pressure at the hydraulic couplers. 3. Move the auxiliary hydraulics lever into the reverse position. 4. Remove the protective covers from the hydraulic couplers on the traction unit. 5.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the rst 8 operating hours • Replace the hydraulic lter. After the rst 50 operating hours Before each use or daily • Change the engine oil and lter. • Check and adjust the track tension. • • • • • Check the engine oil level. Grease the traction unit. Check the condition of and clean the tracks.
If you leave the key in the ignition switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the ignition and disconnect the wire from the spark plug before you do any maintenance. Set the wire aside so that it does not accidentally contact the spark plug. Premaintenance Procedures Before opening any of the covers, stop the engine and remove the key. Allow the engine to cool before opening any covers Opening the Hood 1.
Installing the Side Screens Slide the side screens into place in the slots in the front screen and frame. Removing the Front Screen If the engine has been running the heat shield will be very hot and could burn you. Figure 23 Allow the traction unit cool completely before touching the heat shield. 1. Hand knob 2. Tilt the rear access cover down and remove to access the internal components (Figure 23). 1. Open the hood and remove both side screens. 2.
11. Tighten the bolts securing the front weight (Figure 25). 12. Install the side screens and close the hood. Lubrication Greasing the Traction Unit Grease all pivot joints every 8 operating hours and immediately after every washing. Grease Type: General-purpose grease. 1. Lower the loader arms and stop the engine. Remove the key. Figure 26 1. Front screen 2. Bolts (left side bolt not shown) 2. Clean the grease fittings with a rag. 3. Connect a grease gun to each fitting (Figure 28 and Figure 29). 6.
Figure 29 4. Pump grease into the fittings until grease begins to ooze out of the bearings (approximately 3 pumps). Figure 30 5. Wipe up any excess grease. 1. 2. 3. 4. 5. Engine Maintenance Servicing the Air Cleaner Knob Air cleaner cover Cover nut Spacer Cover 6. 7. 8. 9. Foam pre-lter Paper lter Rubber seal Air cleaner base Foam Pre-filter: Clean every 25 operating hours. 5. Carefully slide the foam pre-filter off of the paper element (Figure 30).
4. Squeeze the pre-filter to distribute the oil. 5. Inspect the paper filter for tears, an oily film, and damage to the rubber seal (Figure 32). Viscosity: See table below G005564 Figure 33 Figure 32 1. Paper element 2. Rubber seal Changing the Oil Important: Never clean the paper element. Replace the paper element if it is dirty or damaged (i.e., after approximately 100 operating hours). 1. Start the engine and let it run for five minutes. This warms the oil so it drains better. 2.
6. 7. 8. 9. Note: Dispose of the used oil at a certified recycling center. Remove the oil fill cap and slowly pour approximately 80% of the specified amount of oil in through the valve cover. Check the oil level; refer to Checking the Engine Oil Level in Operation, page 19. Slowly add additional oil to bring the level to the F (full) mark on the dipstick. Replace the fill cap. rubber gasket contacts the filter adapter, then tighten the filter an additional 1/2 turn. 8.
Figure 38 Figure 37 1. Center electrode insulator 2. Side electrode 3. 1. Filter Air gap (not to scale) 2. Hose clamp 5. Squeeze the ends of the hose clamps together and slide them away from the filter (Figure 38). 2. Check the gap between the center and side electrodes (Figure 37). 6. Place a drain pan under the fuel lines to catch any leaks, then remove the filter from the fuel lines. 3. Bend the side electrode (Figure 37) if the gap is not correct. 7.
1. Lower the loader arms, stop the engine, and remove the key. 2. Syphon the gasoline from the tank using a pump type syphon. Note: Now is the best time to install a new fuel filter because the fuel tank is empty. Electrical System Maintenance Figure 39 1. Vent caps 2. Lower part of tube Servicing the Battery 3. If the electrolyte is low, add the required amount of distilled water; refer to Adding Water to the Battery.
Charging the Battery Important: Ensure that you use high-pressure water to wash only the track area. Do not use a high-pressure washer to clean the rest of the traction unit. High-pressure washing can damage the electrical system and hydraulic valves or deplete grease. Charging the battery produces gasses that can explode. Never smoke near the battery and keep sparks and flames away from battery. Important: Ensure that you fully clean the road wheels, the tension wheel, and the drive sprocket (Figure 40).
Replacing the Tracks (TX 420, Model 22306) When the tracks are badly worn, replace them. 1. Lower the loader arms, stop the engine, and remove the key. 2. Lift/support the side of the unit to be worked on so that the track is 3 to 4 inches (7.6 to 10 cm) off of the ground. 3. Remove the locking bolt and nut (Figure 42). 4. Using a 1/2 inch drive socket, release the drive tension by turning the tensioning screw clockwise (Figure 42 and Figure 43). Figure 41 1. 2-3/4 inches (7 cm) 1.
9. Push the track under and between the road wheels (Figure 43). 10. Starting at the bottom of the tension wheel, install the track around the wheel by rotating the track rearward while pushing the lugs into the wheel. 11. Turn the tensioning screw counterclockwise until the distance between the tension nut and the back of the fork tube (Figure 41) is 2-3/4 inches (7 cm). 12. Align the closest notch in the tension screw to the locking bolt hole and secure the screw with the locking bolt and nut. 13.
16. Torque the nut to 300 ft-lb (407 N⋅m). 17. Turn the tensioning screw counterclockwise until the distance between the tension nut and the back of the tension tube (Figure 41) is 2-3/4 inches (7 cm). 18. Align the closest notch in the tension screw to the locking bolt hole and secure the screw with the locking bolt and nut. 19. Repeat steps 2 through 18 to replace the other track. Figure 46 20. Lower the traction unit to the ground. 1. 2. 3.
Note: To complete this procedure, you will need a sturdy metal hook to disconnect the idler pulley spring, such as the Spring Removal Tool (Toro part number 92–5771) available for order from you Authorized Service Dealer. 1. Lower the loader arms, stop the engine, and remove the key. 2. Open the hood. 3. Connect the hook on the spring removal tool to the hook on the idler pulley spring, and disconnect the spring from the stud as illustrated in Figure 47. Figure 48 1. Idler pulley assembly 2.
Controls System Maintenance The factory adjusts the controls before shipping the traction unit. However, after many hours of use, you may need to adjust the traction control alignment, the neutral position of the traction control, and the tracking of the traction control in the full forward position. Figure 51 1. Important: To adjust the controls properly, complete each procedure in the order listed. Traction control 2. Stem , bolt and nut 5.
1. Drive the traction unit with the traction control against the reference bar, noting which direction the traction unit veers. 2. Release the traction control. 3. If the traction unit veers to the left, loosen the right jam nut and adjust the tracking set screw on the front of the traction control (Figure 54). 4. If the traction unit veers to the right, loosen the left jam nut and adjust the tracking set screw on the front of the traction control (Figure 54). Figure 53 1. Traction rod 2. Jam nut 4.
1. Position traction unit on a level surface. 2. Lower the loader arms, stop the engine, and remove the key. 3. Open the rear access cover. 4. Place a drain pan under the filter (Figure 55). 11. Check the fluid level in the hydraulic tank (refer to Checking the Hydraulic Fluid in Operation, page 19) and add fluid to raise the level to mark on dipstick. Do not over fill the tank. 12. Close the rear access cover. Changing the Hydraulic Fluid Change the hydraulic fluid after every 400 operating hours or yearly.
detergent, diesel engine oil (API service CH-4 or higher); refer to Checking Hydraulic Fluid in Operation, page 19. 10. Start the engine and let it run for a few minutes. 11. Stop the engine. 12. Check the hydraulic fluid level and top it off if necessary; refer to Checking Hydraulic Fluid in Operation, page 19. 13. Close the hood. Checking the Hydraulic Lines Figure 56 1. Filler neck cap 2.
Cleaning the Chassis 3. Open the hood. 4. Clean any debris from the front and side screens. Over time, the chassis under the engine collects dirt and debris that must be removed. Using a flashlight, open the hood and inspect the area under the engine on a regular basis. When the debris is 1 to 2 inches deep, complete the following procedure (refer to Figure 58 throughout this procedure): 5. Wipe away debris from the air cleaner. 6.
20. Slide the tank all the way into the traction unit. Important: The fuel line and wires must be away from the engine pulleys and the frame. 21. Replace the rear panel and secure it with the six bolts and nuts removed previously (Figure 58). 22. Secure the battery tray with the bolts and washers removed previously. 23. Install the side weights with the bolts, washers, and lock washers removed previously (Figure 58). Figure 59 1. Black wire 2. 24. Close the rear access cover. Orange wire 25.
Storage B. Run the engine to distribute conditioned fuel through the fuel system (5 minutes). 1. Lower the loader arms, stop the engine, and remove the key. C. Stop the engine, allow it to cool and drain the fuel tank using a pump type syphon. 2. Remove dirt and grime from the external parts of the entire traction unit, especially the engine. Clean dirt and chaff from the outside of the engine cylinder head fins and blower housing. D. Restart the engine and run it until it stops. E. Choke the engine. F.
Troubleshooting Problem Possible Cause The starter does not crank 1. The battery is discharged. 2. The electrical connections are corroded or loose. 3. The relay or switch is damaged. The engine will not start, starts hard, or fails to keep running. 1. The fuel tank is empty. 2. 3. 4. 5. 6. 7. Engine loses power. Corrective Action 1. Charge the battery or replace it. 2. Check the electrical connections for good contact. 3. Contact your Authorized Service Dealer. 1. Fill the fuel tank with gasoline.
Problem The engine overheats. Possible Cause Corrective Action 1. The engine load is excessive. 2. The oil level in crankcase is low. 3. The cooling ns and air passages under the engine blower housing are plugged. 1. Reduce ground speed. Abnormal vibration. 1. The engine mounting bolts are loose. 1. Tighten the engine mounting bolts. The traction unit does not drive. 1. The parking brake is on. 2. Check and add oil to the crankcase. 3.
Schematics Electrical Schematic (Rev.
Hydraulic Schematic (Rev.
