Evaluating the John Deere 855 Track Loader for Practical Use and Longevity

[MikePhua]

The John Deere 855 and Its Production Legacy
The John Deere 855 track loader was introduced during the mid-1980s as part of Deere’s push to modernize its compact crawler lineup. Positioned between lighter utility loaders and full-size dozers, the 855 was designed for versatility in construction, demolition, and site preparation. With a turbocharged diesel engine producing around 110 horsepower and an operating weight near 30,000 lbs, the 855 offered a balance of power and maneuverability.
Though not produced in massive quantities, the 855 shared many components with Deere’s dozer series, particularly the 755 and 850 models. This parts commonality has helped sustain the 855’s serviceability long after production ceased. Deere’s dealer network and aftermarket suppliers continue to support the machine, especially in regions where older equipment remains in active use.
Performance Strengths and Known Weaknesses
Operators familiar with the 855 often praise its torque converter transmission and hydrostatic drive system, which provide smooth power delivery and responsive control. The loader arms are robust, and the bucket breakout force is sufficient for heavy material handling. However, like many machines of its era, the 855 has a few known trouble spots:

• Cooling system sensitivity: The radiator is prone to clogging with debris, especially in dusty or demolition environments. Overheating can occur if airflow is restricted.
  
• Undercarriage wear: Track chains, rollers, and sprockets wear quickly under aggressive use. A unit with 50% undercarriage life remaining should be inspected for uneven wear and tensioning issues.
  
• Electrical aging: Wiring harnesses and connectors may degrade over time, leading to intermittent faults or sensor failures.
  
• Hydraulic leaks: Older seals and hoses can develop slow leaks, particularly around the control valve block and lift cylinders.
  

Preventive maintenance is key. Keeping the radiator clean, inspecting track tension regularly, and replacing worn hydraulic lines can extend the machine’s life significantly.
Parts Availability and Dealer Support
Although the 855 was not produced in high volumes, parts availability remains reasonable due to its shared lineage with Deere dozers. Major components such as final drives, hydraulic pumps, and engine parts are still stocked by dealers and aftermarket suppliers. Smaller items—like cab trim, gauges, or proprietary fittings—may require sourcing from salvage yards or specialty rebuilders.
Recommendations for sourcing parts:

• Contact regional Deere dealers with access to legacy inventory systems
  
• Use serial number prefixes to match compatible components from 755 and 850 dozers
  
• Explore salvage yards specializing in older Deere equipment
  
• Consider remanufactured or rebuilt assemblies for cost savings
  

One operator in Alabama reported success sourcing parts through a dealer who cross-referenced the 855’s transmission components with a 755 crawler dozer. The match was exact, and the loader was back in service within days.
Is a Mid-1980s 855 Worth $10,000 with 50% Undercarriage
A John Deere 855 from 1985 or 1986 with a half-life undercarriage and no major mechanical faults can be a solid investment at $10,000—especially for owner-operators or small contractors. The machine’s value depends on several factors:

• Engine condition: Compression, oil pressure, and cold-start behavior
  
• Transmission response: Smooth gear engagement and no slippage under load
  
• Hydraulic function: Fast cycle times and minimal drift in lift arms
  
• Frame integrity: No cracks, weld repairs, or excessive rust
  
• Cab condition: Operational gauges, seat, and visibility
  

If the machine starts reliably, moves under its own power, and lifts without hesitation, it can easily justify the price. However, buyers should budget for future undercarriage work, which can cost $6,000–$8,000 depending on parts and labor.
Operational Tips and Longevity Strategies
To maximize the lifespan of a John Deere 855:

• Clean the radiator daily during heavy use to prevent overheating
  
• Use high-quality hydraulic fluid and change filters every 500 hours
  
• Monitor track tension and adjust as needed to prevent premature wear
  
• Grease all pivot points weekly, especially loader arms and bucket pins
  
• Store the machine under cover to reduce UV damage and moisture intrusion
  

A contractor in Georgia shared that his 855 ran for over 12,000 hours with only one major engine overhaul. He attributed its longevity to disciplined maintenance and avoiding overloading the bucket during demolition work.
Conclusion
The John Deere 855 track loader remains a capable and serviceable machine decades after its release. With shared components from Deere’s dozer line and a reputation for mechanical durability, it offers real value for operators who understand its quirks and maintain it properly. While not as refined as modern loaders, the 855 still earns its place on job sites where reliability and raw power matter more than digital dashboards. For those willing to invest in upkeep, this machine can move mountains—one bucket at a time.