I. Daily Maintenance (Every day or 8-10 operating hours)
| Item | Specific Actions and Standards |
|---|---|
| 1. Engine Oil Check | Check the dipstick when the engine is cold; oil level should be between the marks. If oil appears cloudy or blackened, shorten the replacement interval. |
| 2. Coolant Check | Check the auxiliary tank level; top up with the same type of antifreeze if low (never mix different brands). |
| 3. Tire Pressure | Field operation: 1.0–1.4 bar; road transport: 1.8–2.2 bar (refer to the sidewall specifications). |
| 4. Bolt Tightening | Focus on key bolts (wheel hubs, suspension, drive shaft, etc.). Torque should meet manual specifications (e.g., M16 bolts typically 120–140 N·m). |
| 5. Filter Inspection | Remove and gently tap the air filter; clean or replace if heavily soiled. Drain the water separator regularly. |
II. Periodic Maintenance (Based on operating hours or seasons)
1. Every 50 hours
Fuel System: Clean the coarse fuel filter screen; check fuel lines for leaks.
Transmission System: Check gear oil levels in the gearbox and rear axle.
Lubrication Points: Grease all grease fittings (suspension links, steering ball joints, etc.) until old grease is expelled.
2. Every 250 hours
Engine Oil & Filter: Replace engine oil and oil filter (recommended to replace diesel filter simultaneously).
Hydraulic System: Check hydraulic oil cleanliness; replace filter if clogged (hydraulic oil recommended every 500 hours).
Battery Maintenance: Clean terminal posts; check starting voltage (not below 12.4V).
3. Every 500 hours
Cooling System: Clean debris from radiator fins; check fan belt tension (10–15 mm deflection is normal).
Braking System: Adjust brake clearance; replace brake pads if thickness < 3 mm.
Electrical Inspection: Check alternator output voltage (13.8–14.5V); clean oxidized wire connectors.
4. Every 1000 hours
Transmission System: Replace gear oil in gearbox and front/rear axles (refer to ISO VG 220 or manufacturer's specification).
Hydraulic System: Completely replace hydraulic oil and flush the tank.
Steering System: Check steering pump pressure (typically 12–16 MPa); adjust steering clearance.
5. Seasonal Maintenance (Before season change or long-term storage)
Autumn: Replace with higher-grade antifreeze (freezing point at least 10°C below local minimum temperature); fill fuel tank with anti-gel diesel.
Spring: Clean air conditioning condenser; check refrigerant pressure.
Long-term Storage: Disconnect battery negative terminal; raise tires off the ground to prevent flat spots; cover exhaust pipe to prevent moisture ingress.
III. Key Component Warning Signs and Actions
| Component | Warning Signs | Emergency Action |
|---|---|---|
| Clutch | Slipping (engine RPM rises but speed does not) | Adjust clearance immediately; replace friction disc if severely worn. |
| Hydraulic Pump | Weak lifting, abnormal noise | Check hydraulic oil level and filter; test system pressure. |
| Diesel Engine | Black smoke (incomplete combustion), power loss | Clean fuel injectors; inspect air filter and turbocharger. |
| Battery | Weak starting, dim instrument lights | Check charging voltage; replace if problem persists after cleaning terminals. |
IV. Maintenance Safety Rules
Shutdown before repair: Turn off the engine and remove the key; lower and lock any attached implements.
Hydraulic safety: Release hydraulic pressure before servicing; never disconnect lines under pressure.
Tire removal: Use a professional tire cage for inflation/deflation; never heat rims with flame.
Waste fluid disposal: Collect used oil, hydraulic fluid, etc., in dedicated containers; never discharge directly.
V. Sample Maintenance Record
| Date | Operating Hours | Maintenance Items | Parts/Fluids Replaced | Next Service Due |
|---|---|---|---|---|
| 2025-12-10 | 1250 | Hydraulic & gear oil replacement | ISO VG 46 / 80W-90 | 1500 hours |
Tips:
This guide is based on general tractor models. Always refer to your tractor's Owner's Manual for specific parameters.
For complex faults, contact an authorized service center and use genuine parts to extend equipment life.
Regular maintenance costs are about 1/8 of major repair expenses and effectively reduce downtime losses.
Wishing you efficient machinery and abundant harvests! 🌾
