Form No. 3325-427 Rev A ® Groundsmaster® 328-D 4-Wheel Drive Traction Unit Model No.
Contents Contents 2 Introduction 3 Safety Safe Operating Practices Safety and Instruction Decals 4 4 8 Specifications 11 Before Operating Check the Engine Oil Filling the Fuel Tank Check the Cooling System Checking the Hydraulic System Oil Checking the Rear Axle Check the Bi-Directional Clutch’s Lubricant 13 13 13 14 14 15 15 Operation Controls Starting/Stopping the Engine Bleeding the Fuel System Checking the Interlock Switches Pushing or Towing the Traction Unit Operating Characteristics 16 16
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 Check the Engine Oil 4. Install the oil fill cap and close the hood. The engine is shipped with 4 qt (=3.8 l) of oil in the crankcase; however, the oil level must be checked before and after you first start the engine. Filling the Fuel Tank DANGER 1. Park the machine on a level surface, stop the engine and remove the key from the ignition switch. Open the hood and install the hood prop. 2. Remove the dipstick (Fig. 2), wipe it clean and reinsert it.
cap and replenish the system. DO NOT OVERFILL. 3. 1 Install the expansion tank cap. Checking the Hydraulic System Oil The hydraulic system is designed to operate on any high-quality detergent oil having the American Petroleum Institute—API —“ service classification” SF/CC or CD. Oil viscosity—weight—must be selected according to anticipated ambient temperature. Temperature/viscosity recommendations are: Figure 4 1.
unscrew the dipstick and check the oil level. If the level is not within 1⁄2 in. (13 mm) from the groove in the dipstick (Fig. 6), add enough oil to raise the level to the groove mark. Do not overfill by more than 1⁄2 in. (13 mm) above the groove. 3 Important When adding oil to the hydraulic 2 1 system, use a funnel with a fine wire screen— 200 mesh—and ensure the funnel and oil are immaculately clean. This procedure prevents accidental contamination of the hydraulic system. Figure 7 1. Check plug 2.
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. 9) to prevent accidental machine movement. The traction pedal (Fig. 9) 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. 11) 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. 11).
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. 11). 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 13 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.
axle steering pivots (2) (Fig 19)cylinder rod ends (4) (Fig 19) drove shaft (3) (Fig. 20); clutch housing (Fig 20) and engine output shaft bearing (Fig. 21). 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.
(2) 1 (4) Figure 22 1. Air cleaner indicator (2) 3. Figure 19 Be sure the cover seals around the air cleaner body. Servicing the Air Cleaner 1. Pull the latch outward and turn the air cleaner cover counter-clockwise. Remove the cover from the body (Fig. 23). Clean inside of the air cleaner cover. 1 Figure 20 2 1 Figure 23 1. Air cleaner latch 2. Air cleaner cover Figure 21 General Air Cleaner Maintenance 1. Check the air cleaner body for damage that could possibly cause an air leak.
Cleaning the Radiator and Screen The screen and front of the radiator must be kept clean to prevent the engine from overheating. Check the screen and front of the radiator daily and, if necessary, clean any debris from these parts. However, in extremely dusty and dirty conditions, check and clean the screen each quarter hour and check the radiator every hour. 1 Note: This situation may be particularly prevalent if the rear discharge cutting unit is being used.
5. drain pan. Fuel Tank Remove and replace the oil filter (Fig. 26). Drain and clean the fuel tank after every 800 hours operation or yearly, whichever comes first. Also, drain and clean the tank if the fuel system becomes contaminated or if the machine will be stored for an extended period. Use clean diesel fuel to flush out the tank. 1 Fuel Lines and Connections Figure 26 Check the fuel lines and connections every 400 hours or yearly, whichever comes first.
4. Install the filter canister by hand until the gasket contacts the mounting surface, then rotate an additional 1⁄2 turn. Replacing the Fuel Pre Filter 1 Replace the fuel pre filter (Fig. 28), located between the fuel tank and fuel pump after every 400 operating hours or yearly, whichever occurs first. 1. 2. Figure 29 Clamp both fuel lines that connect to the fuel filter so fuel cannot drain when you remove the lines. 1. No.
4. Clean and install the screen. Changing Coolant in the Cooling System Capacity of cooling system is approximately 6 quarts (5.7 L). The cooling system must be filled with a 50/50 solution of water and permanent ethylene glycol anti-freeze. Every two years, drain the coolant from the radiator by opening the drain cock (Fig. 30). After coolant has drained, flush the entire system and refill it with a 50/50 solution of water and anti-freeze. 1 Figure 32 1.
belt until proper deflection is achieved, then tighten the idler pulley locknut (Fig. 33). Cooling Fan Belt 1. Unlatch and open the hood. 2. Remove the capscrews (5) securing the fan belt guard and remove the guard (Fig. 34). 5. Install the fan belt guard and secure it with capscrews (Fig. 34). Close and latch the hood. To replace the belt: 1. Follow the procedures in step 1 and 2 above. 2.
Adjusting the Traction Control Rod Adjusting the Traction Pedal Friction Wheel 1. 1. Loosen the two nuts securing the traction pedal shaft on the right side of the pedal (Fig. 38). 2. Rotate the shaft to move the worn surface of the friction wheel away from the underside of the traction pedal. 3. Tighten the nuts to secure the shaft and wheel in position. 2. Check the traction drive neutral position to assure the front wheels do not creep; refer to Adjusting the Traction Drive for Neutral.
plate against the side of the transmission. Verify the adjustment with the throttle in the SLOW and FAST position. Adjusting the Traction Interlock Switch 1. Adjust the transmission for neutral; refer to Adjusting the Traction Drive for Neutral, page 30. 2. Actuate the pump lever (Fig. 39) to ensure all parts are operating freely and seated properly. 3. Loosen the jam nut. Rotate the switch adjusting screw (Fig. 39) until there is a gap between the head of the screw and the switch button. 4.
depressed (13 mm) when the power take-off lever is moved to OFF. Tighten the jam nuts. Install the boot to the switch. 3 Important : Switch threads will be damaged if 2 you overtighten the jam nuts. 1 6. 7. Connect a continuity tester or ohm meter to the switch connector. With the power take-off lever in the ON position, the switch circuit should not have any continuity. If there is continuity, recheck the switch installation. If there is no continuity, go to the next step. Figure 41 1. 3-3⁄16 in.
Adjusting the Tilt Steering Control If the steering wheel tilt control lever must be adjusted, proceed as follows: 1. 2. 3. Remove the knob from the parking brake and the self-tapping screws from the steering column cover. Slide the cover up the steering shaft to expose the pivot bracket (Fig. 43). 1 3 2 Figure 44 1. Ball joint 2. Tie Rod 3. Tie rod clamp Loosen the small nut, rotate pivot bracket until it tightens the large nut below (Fig. 43). Retighten the small nut. 3.
1 1 Figure 45 1. Jam nuts Figure 46 1. Slot 2. When the brake cable cannot get free travel within 13 to 25 mm, the star nut inside the brake drum must be adjusted. However, before adjusting the star nut, loosen the brake cable nuts to prevent unnecessary strain on the cables. 3. Loosen the five wheel nuts holding the wheel and tire assembly on the wheel studs. 4. Jack up the machine until the front wheel is off the floor. Use jack stands or block the machine to prevent it from falling accidentally.
10. Adjust the brake cables using step 1. Replacing the Hydraulic Oil Filter Adjusting the Lift Lever Latch 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.
4. 250 hours of operation or seasonally, whichever comes first. The hydraulic system is designed to operate on any high-quality detergent oil having the American Petroleum Institute—AP1—“service classification” SF/CC or CD. Oil viscosity—weight— must be selected according to anticipated ambient temperature for the season in which product will be used.
directional clutch must be changed. 1 2 1. Position the machine on a level surface. 2. Clean the area around the check plug on the clutch. 3. Rotate the clutch so the check plug is positioned downward (Fig 53). Figure 51 1. Dipstick 2. Groove 2 Changing Rear Axle Lubricant After every 400 hours of operation, the oil in the rear axle must be changed. 1. 1 Figure 53 Position the machine on a level surface. 1. Clutch 2. Check plug 2. Clean the area around the drain plugs (Fig. 52). 3.
4 1 3 • Underneath the cutting unit • Under the cutting unit belt covers • Counterbalance springs • Power take-off shaft assembly • All grease fittings and pivot points 2 2. Check the tire pressure. Inflate all traction unit tires to 21 psi (145 kPa). 3. Remove, sharpen, and balance the cutting unit’s blades. Install the blades and torque the blade fasteners to specifications. 4. Check all fasteners for looseness; tighten as necessary. 5.
2. Remove and discard the oil filter. Install a new oil filter. 3. Remove fill cap and add 4 quarts (3.8 l) of SAE 10W-30 CD, CE, CF, CF-4 or CG-4 classification oil until the level reaches FULL mark on the dipstick. DO NOT OVERFILL. 4. Start the engine and run at idle speed for approximately two minutes. 5. Stop the engine. 6. Thoroughly drain all fuel from the fuel tank, lines, fuel pump filter, and the fuel filter/water separator assembly. 7. Flush the fuel tank with fresh, clean diesel fuel.
