Common Faults & Frequently Replaced Parts for LOVOL FR Series Excavators

LOVOL FR series excavators including FR60E mini excavator, medium-sized FR150E and heavy-duty FR220E are widely used globally. Long hours of operation under dusty, muddy and high-load conditions easily lead to component wear and mechanical faults. Understanding typical failures and consumable spare parts helps you arrange maintenance plans in advance and reduce unexpected shutdowns.

1. Common Hydraulic System Failures & Related Spare Parts

1.1 Slow movement, weak digging force

Possible causes: Internal leakage of main hydraulic pump, worn valve plate, blocked hydraulic filter or damaged seal kits. Recommended replacement parts: hydraulic pump assembly, filter element, cylinder seal kits.

1.2 Boom or arm drops automatically

This typical fault is usually caused by a faulty holding valve or aging cylinder seals. Replacing the holding valve and complete seal kits can effectively solve the problem.

1.3 High hydraulic oil temperature

Check the cooling system first. Dirty hydraulic radiator, contaminated hydraulic oil and damaged hydraulic motor are the main triggers. Regular oil change and filter replacement can extend hydraulic service life.

2. Engine Common Problems & Maintenance Parts

Most LOVOL excavators are fitted with Weichai diesel engines. Frequent engine issues include difficult startup, insufficient power and abnormal noise.

• Difficult starting: Check starter motor, fuel injector and fuel filter

• Exhaust black smoke: Replace air filter and inspect fuel system

• Engine overheating: Clean radiator, check water pump and cooling nozzle

Regular replacement of filter kits is the most economical way to protect the engine and avoid major repairs.

3. Undercarriage Wear Problems (FR60E / FR150E / FR220E)

The undercarriage bears all machine weight. Working on rock and sand accelerates wear:

• Track roller leakage and abrasion → Replace track roller & top roller

• Loose and cracked track chain → New track link assembly

• Serious tooth wear on sprocket → Sprocket rim replacement

Daily cleaning of mud and gravel on tracks can greatly extend the service life of chassis parts.

4. Electrical System Malfunctions

Common electrical faults: No response of control handles, sensor error codes, solenoid valve failure. Humidity and vibration easily damage wiring harness and solenoid coils. Prepare spare solenoid valves and sensors for emergency maintenance.

5. List of Fast-Moving Consumable Parts for LOVOL Excavators

6. Maintenance Suggestion to Extend Excavator Service Life

1. Replace all filter elements according to working hour cycles

2. Inspect hydraulic oil level and oil leakage every day

3. Adjust track tension regularly to reduce chassis wear

4. Use qualified spare parts to prevent secondary damage

Source Reliable LOVOL Excavator Replacement Parts from Toprunparts

If you need to purchase LOVOL excavator spare parts with specific part numbers, contact our team for wholesale quotation. We stock hydraulic assemblies, engine components and undercarriage wear parts. Besides LOVOL digger parts, we supply Sany excavator spare parts and other Chinese construction machinery accessories for global dealers.

Further Reading

• Complete Guide to LOVOL Excavator Spare Parts & Sourcing Tips