Form No. 3325-413 Rev A ® Groundsmaster® 328-D Traction Unit Model No.
Contents Contents 2 Introduction 3 Safety Safe Operating Practices Safety and Instruction Decals 4 4 8 Specifications 11 Before Operating Hood Prop Check the Engine Oil Filling the Fuel Tank Check the Cooling System Checking the Hydraulic System Oil 13 13 13 13 14 14 Operation Controls Starting/Stopping the engine Bleeding the Fuel System Checking the Interlock Switches Pushing or Towing the Traction Unit Operating Characteristics 16 16 18 19 19 20 20 Maintenance Recommended Maintenance Schedule
Warning signals a hazard that may cause serious injury or death if you do not follow the recommended precautions. Introduction Read this manual carefully to learn how to operate and maintain your product properly. The information in this manual can help you and others avoid injury and product damage. Although Toro designs and produces safe products, you are responsible for operating the product properly and safely.
Safety used and remove all objects such as rocks, toys and wire that can be thrown by the machine. 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.
Clean up oil or fuel spillage. move the traction pedal to neutral, disengage drives, engage the parking brake (if provided), and shut off the engine before leaving the operator’s position for any reason. • • • • • Let the engine cool before storing and do not store it near flame. • Shut off fuel while storing or transporting. Do not store fuel near flames or drain indoors. • Park the machine on level ground. Never let untrained personnel service the machine.
damage. Repair or replace any damaged parts before operating. Ensure that the cutting blades are in good condition and the blade bolts are torqued to proper specifications (see the cutting deck operator’s manual). serious injury or death. Using this product for purposes other than its intended use could be dangerous to the user and bystanders. Operation • Check carefully for overhead clearances such as branches, doorways, and electrical wires before driving under any objects. Do not contact the objects.
condition before applying pressure to the system. • Keep your body and hands away from pin hole leaks or nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard, not your hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and cause serious injury. • Before disconnecting or performing any work on the hydraulic system, all pressure in the system must be relieved by stopping the engine and lowering the cutting units.
Safety and Instruction 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. 1 1 1 93-7822 1. Caution—fill the fuel tank to 1 in. (25 mm) below the filler neck. Read the operator’s manual for further instructions. 1 82-8940 1. Locks and unlocks the steering column 2 93-7275 1. Read the operator’s manual for further instructions. 2. Do not use starting fluid. 3 4 5 6 1 1 2 105-0056 1.
1 93-6696 1. Warning—spring-loaded mechanism. Read the operator’s manual for further instructions. 1 1 1 93-7831 1. Parking brake—read the operator’s manual for further instructions. 93-7272 1. Fan blades can cause injury—stay away from moving parts. 1 1 2 3 93-7821 2 1. Caution 2. Fill coolant to within 1 in. (25 mm) of the top of the tank. 3. Read the operator’s manual for further instructions. 93-7830 1. Caution—read the operator’s manual for further instructions. 2.
1 3 1 2 4 3 2 2 4 1 2 5 6 5 6 100-6574 7 1. Hot surface hazard—stay away. 2. Cutting/dismemberment hazard—stay away from moving parts. 7 7 93-7806 1. 2. 3. 4. Power take off on Power take off off Warning—read the operator’s manual. Cutting hazard to hands or feet—stay away from rotating blades and moving parts. 5. Throw object hazard—keep bystanders away. 6. Warning—set the parking brake, stop the engine, and remove the key before leaving the operator’s position. 7.
Specifications Note: Specifications and design subject to change without notice. General Specifications Engine Kubota, three-cylinder, 4-cycle liquid cooled diesel engine. 26 hp @ 3000. The engine is governed to 3200–3250 rpm high idle, no load. Air Cleaner: Heavy-duty, remote mounted Muffler: Volume equal to approximately five times engine displacement for excellent silencing. Cooling System The radiator has tube-and-fin construction with the hydraulic oil cooler in the lower tank.
Interlock Switches Power take off switch—shuts the engine off when the power take off is engaged with no operator on the seat. Traction switch—shuts the engine off when the traction pedal is engaged with no operator on the seat. Seat switch—shuts the engine off if operator leaves the seat without disengaging the power take off and/or traction pedal. The engine will not start if the power take off or traction pedal is engaged.
Before Operating Hood Prop (Model 30630 only) 1. Position the machine on a level surface. 2. Disengage the hood latch and open the hood. 3. Slide the bottom of the hood prop (Fig. 2) from the retaining bracket. Lower the hood prop, pivot it upward, then downward to prop up the hood. 1 Figure 3 1. Dipstick 1 1 Figure 2 1. Hood prop Check the Engine Oil Figure 4 1. Oil fill The engine is shipped with 4 qt (=3.
should be between the marks on the side of the tank. DANGER Under certain conditions, diesel fuel and fuel vapors are highly flammable and explosive. A fire or explosion from fuel can burn you and others and can cause property damage. • Use a funnel and fill the fuel tank outdoors, in an open area, when the engine is off and is cold. Wipe up any fuel that spills. • Do not fill the fuel tank completely full. Add fuel to the fuel tank until the level is 1 in. (25 mm) below the bottom of the filler neck.
with a wrench. Temperature/viscosity recommendations are: Expected Ambient Temperature 4. Recommended Viscosity and Type (Extreme) over 32° C SAE 30, Type SF/CC or CD engine oil (Normal) 4–37° C SAE 10W-30 or 10W-40, Type SF/CC or CD engine oil (Cool) –1 to 10° C SAE 5W-30, Type SF/CC or CD engine oil (Winter) Below –1° C Type “F” or “FA” ATF Automatic Transmission Fluid 1 2 Figure 7 Note: Do not mix engine oil and automatic transmission fluid or hydraulic system component damage may result.
Operation Note: Determine the left and right sides of the machine from the normal operating position. position and push the lever forward to lock adjustment. Controls Brake Pedal Traction Pedal Whenever you shut off the engine, you must engage the parking brake (Fig. 8) to prevent accidental machine movement. The traction pedal (Fig. 8) makes the machine move forward and backward.
lever to move to the TRANSPORT position. The implement should be raised when driving from one work area to another, except when descending steep slopes. Oil Pressure Warning Light The oil pressure warning light (Fig. 10) glows when oil pressure in the engine drops below a safe level. If low oil pressure ever occurs, stop the engine and determine the cause. Repair the damage before starting the engine again. 1 Charge Indicator Illuminates when the system charging circuit malfunctions (Fig. 10).
Temperature Override Switch Starting/Stopping the engine Press and hold the override switch to start the engine after a high-temperature shut down. Use it only for emergency operation. Important The fuel system must be bled if any of the following situations have occurred. A. Initial start up of a new machine. Glow Plug Indicator B. When lit, indicates glow plugs are on (Fig. 10). Key Switch The engine has ceased running due to lack of fuel. C.
parts and any other noticeable malfunctions. CAUTION Shut off the engine and wait for all moving parts to stop before checking for oil leaks, loose parts or other malfunctions. 1 6. To stop the engine, move the throttle control backward to the SLOW position, move the power take-off switch to the OFF position and turn the ignition key to OFF. Remove the key from the switch to prevent accidental starting. Figure 12 1. Fuel injection pump bleed screw 4. Bleeding the Fuel System 1.
take-off lever is disengaged and the traction pedal is released, it is strongly recommended that you stop the engine before dismounting from the seat. towed for a very short distance. However, Toro does not recommend this as standard procedure. Important Do no push or tow the traction unit faster than 2 to 3 MPH (3 to 4.8 km/h) because the transmission may be damaged. If the traction unit must be moved a considerable distance, transport it on a truck or trailer.
Before stopping the engine, disengage all controls and move the throttle to SLOW. Moving the throttle to SLOW reduces high engine rpm, noise, and vibration. Turn the key to OFF to stop the engine. To maintain enough power for the traction unit and implement while operating, regulate the traction pedal to keep engine rpm high and somewhat constant. A good rule is: decrease ground speed as the load on the implement increases, and increase ground speed as the load decreases.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule Maintenance Service Interval After the first 10 hours Maintenance Procedure • Check the power take-off belt tension. • Check the fan and alternator belt tension. • Change the transmission filter. • Torque the wheel lug nuts. After first 50 hours • Change the engine oil filter. • Check engine RPM. Every 50 hours • • • • • • • • • Check the battery electrolyte level.
plate bushings (Fig. 18); axle pin bushing (Fig. 18) and engine output shaft bearing (Fig. 19). Also apply grease to both brake cables at the drive wheel and brake pedal ends. Daily Maintenance Checklist ✓ Check safety interlock operation. ✓ Check that the grass deflector is in the down position. ✓ Check brake operation. ✓ Check the engine oil level. ✓ Check the cooling system fluid level. ✓ Drain the water/fuel separator. ✓ Check the air cleaner. ✓ Check the radiator and screen for debris.
1 Figure 18 2 Figure 21 1. Air cleaner latch 2. Air cleaner cover 2. Figure 19 General Air Cleaner Maintenance 1. Check the air cleaner body for damage that could possibly cause an air leak. Replace a damaged air cleaner body. 2. Service the air cleaner filters when the air cleaner indicator (Fig. 20) shows red or every 400 hours (more frequently in extreme dusty or dirty conditions). Do not over service the air filter. Gently slide the primary filter (Fig.
2. toward a bright light. 4. Inspect the new filter for shipping damage. Check the sealing end of the filter. Don’t install a damaged filter. 5. Take care to insert the new filter correctly into the air cleaner body. Make sure the filter is sealed properly by applying pressure to the outer rim of the filter when installing. Don’t press on the flexible center of the filter. Open the hood. Set drain pan under the oil pan and in line with drain plug (Fig. 23). 1 Figure 23 6. 7. 1.
2. Servicing the Fuel System Loosen the drain plug on the bottom of the filter canister. Tighten the plug after draining. Note: Refer to Fill the Fuel Tank, page 13, for fuel recommendations. Under certain conditions, diesel fuel and fuel vapors are highly flammable and explosive. A fire or explosion from fuel can burn you and others and can cause property damage. 1 2 • • Use a funnel and fill the fuel tank outdoors, in an open area, when the engine is off and is cold. Wipe up any fuel that spills.
5. Repeat the previous steps on the remaining nozzles. 1 Cleaning Radiator and Screen To prevent engine overheating, keep the screen and radiator clean. Normally, check the screen and radiator daily and, if necessary, clean any debris from these parts. However, it will be necessary to check and clean the screen and radiator frequently in extremely dusty and dirty conditions. Figure 26 1. Fuel pre filter 3.
Alternator Belt 1. Unlatch and open the hood. 2. Proper tension will allow 3⁄8 in. (10 mm) deflection when a force of 10 lbs. is applied on the belt (Fig. 31) midway between the pulleys. 3. If deflection is not 3⁄8 in. (10 mm), loosen the alternator mounting bolts. Increase or decrease alternator belt tension and tighten the bolts. Check belt deflection again to assure tension is correct. 1 Figure 28 1.
To replace the belt: 1. Follow the procedures in step 1 and 2 above. 2. Loosen the locknut securing the adjustable idler pulley, slide the pulley away from the belt, and remove the belt from the pulleys (Fig. 33). 3. Install the new belt and adjust its tension. Push the idler pulley against the belt until the belt deflects 1⁄4 inch (6 mm) with 5 lb. of force (22 N•m) midway between the top pulley and stationary idle pulley. Tighten the idler pulley locknut to secure adjustments (Fig. 33). 4.
2. Press down on the front of the traction pedal and check travel. There should be approximately 89mm clearance between the end of the pedal and floor plate when the pedal in fully depressed (Fig. 35). Adjust the pump control rod (Fig. 36) to attain dimension. friction wheel away from the underside of the traction pedal. 3. Tighten the nuts to secure the shaft and wheel in position. Adjusting the Traction Drive for Neutral 1. Park vehicle on a level surface and turn the engine off.
FAST position. 12. If the front wheel continues to rotate, check for the following: 1 6 2 3 4 7 5 • Loose or worn out ball bearing(Fig. 37). • The plunger on the interlock switch is sticking. • Loose or missing fasteners • Worn roll pin securing the pump lever to the transmission • The pump lever is loose on the control shaft. (Correct by applying Loc-tite 271 or 601 to shaft.) • Weak or damaged leaf springs (Fig. 37). Replace. • Internal transmission component malfunction.
Replacing the Power Take-Off Switch 1. Remove the instrument cover and disconnect the negative battery cable from the battery. 2. Move the power take-off lever forward to the ON position. 3. Remove the boot from the button end of the power take-off switch (Fig. 38). Retain the boot for re-installation. Separate the switch wire connectors. 8. Push the switch connectors together. 9. Connect the battery cable and install the instrument cover.
2 1 2 1 3 Figure 40 1. Parking brake interlock switch 2. Parking brake shaft pivot paddle 3. Wire harness connector 3 Figure 41 2. To adjust the gap, loosen the switch mounting screws, adjust the gap and tighten the screws. 3. Disconnect switch pigtail connector from wire harness. 4. Pull up on the parking brake lever and depress the brake pedal to lock the pedal into first click on latch. 5. Connect a continuity tester or ohm meter to the switch harness connector.
The brakes should only need adjustment after considerable use. These periodic adjustments can be performed where the brake cables connect to the brake pedal mount. When the cables are no longer adjustable, the star nut on the inside of the brake drum must be adjusted to move the brake shoes outward. However, the brake cables must be adjusted again to compensate for this adjustment. Adjusting the Rear Wheel Bearings 1. Jack up the rear of the machine until the wheel is off the floor.
10. Adjust the brake cables using step 1. shoes (Fig. 45). Adjusting the Lift Lever Latch A lift lever latch that is positioned incorrectly can cause the lift lever to hold the spool in an actuated position when the implement is in the FLOAT position. This causes the oil in the hydraulic system to overheat. When the lift lever latch is adjusted correctly, the lift lever should just clear the rounded part of the latch as the lever is moved into the FLOAT position. 1 Figure 45 1.
Replacing the Hydraulic Oil Filter Changing the Hydraulic System Oil The hydraulic oil filter keeps the hydraulic system relatively free of contaminants and must be serviced at regular intervals. Initially, change the filter after first ten hours of engine operation, and thereafter, after every 125 hours of operation or yearly, whichever comes first. Use Toro oil filter, Part No. 23-9740, as a replacement.
with jack stands. 3. Clean the area around the hydraulic oil filter and remove the filter. 4. Remove drain plug from the fitting between axle housing and oil filter and let the oil flow into a drain pan (Fig. 49). 1 2 Figure 50 1. Dipstick 2. Groove Fuses There are 3 fuses in the machine’s electrical system, located below control panel. 1 1 Figure 49 1. Drain plug 5. Install a new filter; refer to steps 1–2 in Replacing Hydraulic Oil Filter, page 14, for proper procedures. Figure 51 1.
with Grafo 112X (skin-over) grease (Toro Part No. 505-47) or petroleum jelly to prevent corrosion. C. Coat the cable terminals and battery posts with Grafo 112X skin-over grease (Toro Part No. 505-47) or petroleum jelly to prevent corrosion. Seasonal Storage D. Slowly recharge the battery every 60 days for 24 hours to prevent lead sulfation of the battery. Traction Unit 1. 2. 3.
