The device described in this manual is a Toro Groundsmaster® 3300, 3310, and 3200 2-Wheel or All-Wheel Drive Traction Unit. This is a ride-on, multi-purpose machine primarily designed for professional, hired operators in commercial applications, specifically for maintaining grass on well-maintained lawns in parks, sports fields, and commercial grounds. It is capable of amputating hands and feet and throwing objects, emphasizing the need to follow all safety instructions.
Function Description:
The traction unit serves as the base for various attachments (e.g., cutting units, flail mowers, snowthrowers, blades, rotary brooms) to perform different tasks. It features a hydraulic system for lifting and lowering attachments and transferring weight, a PTO (Power Take-Off) for driving attachments, and a traction pedal for forward and reverse movement. The machine is equipped with a display screen that provides operating status, diagnostics, and other information. Models 31900 and 31901 comply with European directives (EN ISO 5395) and ANSI B71.4-2017, while Models 31907 and 31909 comply with ANSI B71.4-2017.
Important Technical Specifications:
- Models: 31900, 31901, 31907, 31909.
- Engine: Diesel engine.
- Fuel Tank Capacity: 45 L (12 US gallons).
- Fuel Type: Low sulfur or ultra-low sulfur diesel fuel (ASTM D975, EN590, or JIS K2204). Biodiesel blends up to B20 (20% biodiesel, 80% petroleum diesel) can also be used.
- Engine Oil: High-quality, low-ash engine oil (API service category CJ-4 or higher, ACEA service category E6, JASO service category DH-2). Viscosity: SAE 15W-40 (above 0°F) preferred; SAE 10W-30 or 5W-30 (all temperatures) alternate.
- Crankcase Capacity: 3.4 L (3.6 US qt) with filter for Models 31900/31901; 6.6 L (7 US qt) with filter for Models 31907/31909.
- Hydraulic Fluid: Toro PX Extended Life Hydraulic Fluid (ISO VG 46). Capacity: approximately 22.7 L (6 US gallons).
- Coolant: 50/50 solution of water and ethylene glycol base extended-life coolant (ATSM D3306/D4985, SAE J1034/J814/1941).
- Tire Air Pressure:
- 2-wheel-drive machines: Front tires 138 kPa (20 psi), Rear tires 193 kPa (28 psi).
- 4-wheel-drive machines: 138 kPa (20 psi) for all tires.
- Wheel-Lug Nut Torque: 102 to 108 N·m (75 to 80 ft-lb).
- PTO-Clutch Gap: 0.3 mm (0.012 inch) nominal, 0.6 mm (0.024 inch) maximum service gap.
- Alternator-Belt Tension: 10 mm (3/8 inch) deflection with 4.5 kg (10 lb) force.
- Parking Brake Cable Gap: 3.2 mm (1/8 inch) to 4.8 mm (3/16 inch).
- Weight Transfer Pressure (Rotary Cutting Unit/Snowthrower/Rotary Broom): 1,724 kPa (250 psi).
- Weight Transfer Pressure (Flail Mower/Snow Blade): 1,379 kPa (200 psi).
- Maximum Forward Speed: 21 km/h (13 mph) for Models 31900/31901; 24 km/h (15 mph) for Models 31907/31909.
- Dimensions (Model 31909 with cab):
- Height with roll bar raised: 200 cm (79 inches).
- Height with roll bar lowered: 111 cm (44 inches).
- Height with cab: 226 cm (89 inches).
- Overall length (rear weights equipped): Max 332 cm (131 inches).
- Overall length (no rear weights equipped): Max 312 cm (123 inches).
- Overall width (with equipped attachment): Refer to Width Specifications table.
- Wheel-base length: 132 cm (52 inches).
- Front-wheel tread width: 132 cm (52 inches) for Models 31900/31901; 136 cm (53.5 inches) for Models 31907/31909.
- Rear-wheel tread width: 122 cm (48 inches) for Model 31900; 128 cm (50 inches) for Models 31901/31907/31909.
- Ground clearance: 20 cm (7.9 inches) for Models 31900/31901; 21 cm (8-5/16 inches) for Models 31907/31909.
- Net Weight: 794 kg (1,751 lb) for Model 31900; 792 kg (1,747 lb) for Model 31901; 836 kg (1,843 lb) for Model 31907; 1,106 kg (2,439 lb) for Model 31909.
Usage Features:
- Operator Controls: Key switch (OFF, ON/PREHEAT, START), throttle control (adjusts engine speed), glow-plug switch (cold starts), attachment lift switch (raises/lowers attachments), PTO switch (engages/disengages PTO), display screen button (toggles screens, accesses menus).
- Traction Pedal: Controls forward and reverse movement; speed is proportionate to pedal press. Can be adjusted for operator comfort or to reduce maximum forward speed.
- Parking Brake: Engaged by pulling handle up, disengaged by pushing button and lowering handle. Machine shuts off if traction pedal is engaged while parking brake is not fully lowered.
- Tilt-Steering Lever: Allows adjustment of the steering wheel position for operator comfort.
- Cab Controls (if equipped): Windshield-wiper switch, fan-control knob, light switch, temperature-control knob, air-conditioning switch, recirculation vents.
- Roll Bar: Foldable roll bar for rollover protection. Must be kept in raised and locked position with seat belt worn for protection. Lowered only when absolutely necessary, without wearing the seat belt.
- Safety Interlock System: Prevents engine cranking/starting unless traction pedal is neutral and PTO switch is OFF. Shuts off engine if PTO is ON and operator leaves seat, or if traction pedal is pressed while operator is off seat, or if traction pedal is pressed with parking brake engaged.
- Weight Transfer Adjustment: Hydraulic pressure can be adjusted to transfer attachment weight to the traction unit, improving contour-tracking or traction.
- Towing: Can be towed at speeds below 4.8 kph (3 mph) for short distances after setting the traction pump to bypass hydraulic fluid. For longer distances, transport on a trailer.
Maintenance Features:
- Daily Checks: Air-cleaner indicator, engine oil, coolant system, hood screen and radiator, hydraulic-fluid level, PTO-shaft grease points, safety-interlock system, tire pressure, parking brake operation, fuel level, cooler and screen for debris.
- First Hour/10 Hours: Torque wheel-lug nuts, check alternator-belt tension.
- 50 Hours: Grease bearings and bushings, drain water from fuel/water separator, check battery-cable connections, check battery condition/electrolyte level, check/clean hood-air-intake screen.
- 100 Hours: Check alternator-belt condition and tension, check traction-belt condition.
- 200 Hours: Torque wheel-lug nuts, inspect cooling-system hoses, adjust PTO-clutch gap.
- 250 Hours: Change engine oil and filter (dirty/dusty conditions only for 31900/31901), change air-cleaner element, check/clean cooling fins.
- 400 Hours: Replace fuel/water separator, replace fuel filter, inspect fuel lines/connections, check/adjust parking brake, clean/replace cab air filters, change engine oil and filter, change hydraulic filter (if not using recommended fluid or if alternative fluid used).
- 800 Hours: Change hydraulic fluid (if not using recommended fluid or if alternative fluid used).
- 1,000 Hours: Change hydraulic fluid and hydraulic filter (if using recommended fluid).
- 1,500 Hours: Change engine coolant.
- 2,000 Hours: Change hydraulic fluid (if using recommended fluid).
- Yearly: Drain and clean fuel tank, inspect fuel lines/connections.
- 2 Years: Replace moving hoses, inspect hydraulic lines and hoses.
- Engine Oil and Filter Change: Performed every 500 hours (or 250 hours for 31900/31901 in dirty conditions).
- Air Cleaner Service: Restriction indicator signals when element needs changing. Do not clean used elements.
- Fuel/Water Separator Service: Draining water every 50 hours, replacement every 400 hours.
- Fuel Filter Service: Replacement every 400 hours.
- Battery Maintenance: Check condition weekly or every 50 hours, clean terminals, coat with grease.
- Fuse Locations: Traction-unit fuses and cab fuses are accessible for inspection and replacement.
- PTO Driveshaft Alignment: Markings on driveshaft ends must be aligned during installation to prevent imbalance.
- Cooling System Maintenance: Check coolant level, clean hood-air-intake screen and cooling fins, inspect hoses.
- Brake Maintenance: Checking and adjusting parking brake cable.
- Belt Maintenance: Checking and replacing alternator and traction belts.
- Cab Maintenance: Cleaning the cab, cab air filters, and cab-condenser filter.
- Windshield-Wiper-Fluid Reservoir: Filling with wiper fluid.
- Dome Light Replacement: Replacing the bulb.
- Storage Preparation: Cleaning, checking fluids and tire pressure, lubricating, touching up paint.
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