Due to its age and heavy-duty usage, the machine is prone to several common problems. Understanding these issues helps owners maintain performance, reduce downtime, and avoid costly repairs.
Bobcat 873 Problems
1. Hydraulic System Problems
Hydraulic issues are among the most common problems with the Bobcat 873. Operators often experience slow hydraulic response, weak lifting power, or inconsistent attachment operation. These problems are usually caused by worn hydraulic pumps, leaking control valves, or damaged hoses.
Contaminated hydraulic fluid can also lead to internal wear and pressure loss. Regular fluid changes, filter replacements, and inspections of hoses and fittings are essential to keep the hydraulic system functioning properly.
2. Engine Performance Issues
Engine-related problems are frequently reported, especially on high-hour Bobcat 873 machines. Common symptoms include hard starting, rough idling, loss of power, and excessive exhaust smoke. These issues are often linked to worn fuel injectors, failing fuel pumps, or air leaks in the fuel system.
Turbocharger wear can also reduce engine efficiency and power output. Routine fuel system maintenance and timely replacement of worn components help prevent serious engine damage.
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3. Cooling System Failures
Cooling system problems can lead to overheating, which is a serious concern for the Bobcat 873. Clogged radiators, dirty oil coolers, malfunctioning thermostats, and failing water pumps are typical causes. Machines operating in dusty environments are especially vulnerable to restricted airflow.
Overheating can result in engine damage if not addressed promptly. Regular cleaning of cooling components and monitoring coolant levels are critical preventive steps.
4. Electrical System Problems
Electrical issues can cause starting failures, erratic operation, or warning light malfunctions. Aging wiring harnesses are prone to corrosion, cracked insulation, and loose connections.
Battery and alternator failures are also common in older machines, leading to voltage inconsistencies. Conducting regular electrical inspections and ensuring all connections are clean and secure can reduce the risk of unexpected electrical failures.
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5. Drive and Travel System Issues
Problems with the drive system often show up as reduced travel speed, uneven movement, or loss of power on one side of the machine. These symptoms may indicate worn drive motors, chain case problems, or issues within the hydrostatic system.
Low or contaminated hydrostatic fluid can accelerate component wear. Routine fluid checks and proper servicing of drive components are essential to maintain smooth and reliable operation.
6. Loader Arm and Lift Component Wear
Wear in the loader arms and lift system is common on Bobcat 873 machines with high operating hours. Excessive play, uneven lifting, or jerky movements may be caused by worn pins, bushings, or lift cylinder seals.
Hydraulic leaks in the lift cylinders can reduce lifting power and create safety hazards. Regular inspections and timely replacement of worn parts help maintain safe and efficient lifting performance.
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7. Brake and Parking Brake Problems
Brake-related issues can affect both safety and functionality. Operators may encounter difficulty releasing the parking brake or notice reduced holding power when the machine is parked.
These problems are often caused by worn brake components, linkage issues, or hydraulic pressure problems. Regular brake inspections and proper adjustment are important for safe operation.
8. Cab and Operator Control Issues
Cab-related problems may not directly affect machine performance but can impact operator comfort and awareness. Common issues include worn seats, faulty gauges, and broken latches. Malfunctioning gauges can prevent operators from detecting critical conditions such as overheating or low oil pressure. Keeping the cab and controls in good working order supports safer and more efficient operation.
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9. Age-Related Wear and Maintenance Concerns
As an older skid steer model, the Bobcat 873 naturally experiences age-related wear. Rubber hoses, seals, and electrical components deteriorate over time, even with good maintenance. Proactive servicing and replacing aging parts before they fail can significantly extend the machine’s service life.
FAQs
What are the common problems with Bobcat tractors?
Common problems with Bobcat tractors, including the 873, often involve hydraulic system issues, engine performance concerns, cooling system failures, electrical faults, and wear in the drive and lift components. Other issues may include brake problems and cab or operator control malfunctions, especially in older machines with high operating hours. Regular maintenance can help prevent many of these issues.
What is the life expectancy of a Bobcat 873?
The life expectancy of a Bobcat 873 skid steer depends on usage and maintenance but generally ranges between 8,000 to 12,000 hours of operation. Proper servicing, timely repairs, and careful operation can extend the machine’s lifespan beyond this range.
What engine is in a Bobcat 873?
The Bobcat 873 is equipped with a turbocharged Kubota V3307 diesel engine. This engine delivers reliable power and performance for heavy-duty tasks and is designed to handle demanding applications over long periods.
Is a Bobcat 873 high flow?
Yes, the Bobcat 873 is equipped with a high-flow hydraulic system option. High-flow hydraulics allow the machine to operate attachments that require increased hydraulic power, such as cold planers, mulchers, and large augers.
How long do Bobcat engines last?
With proper maintenance, Bobcat diesel engines can last between 5,000 to 10,000 hours. Regular oil changes, fuel and air filter replacements, and attention to cooling and hydraulic systems are crucial for achieving maximum engine longevity.
Final words
The Bobcat 873 remains a capable and reliable skid steer loader when properly maintained. Common problems include hydraulic system faults, engine performance issues, cooling failures, electrical problems, and drive system wear.
By recognizing these issues early and following a consistent maintenance schedule, owners can reduce downtime, manage repair costs, and continue to get dependable performance from their Bobcat 873.
