Volvo BL70 Loader: Performance, Pitfalls, and Practical Wisdom

[MikePhua]

Overview of the BL70 Loader
The Volvo BL70 is a backhoe loader introduced in the early 2000s, designed to combine the versatility of a loader with the digging power of a backhoe. Manufactured primarily in Poland, the BL70 was Volvo’s answer to the mid-range backhoe market, competing with models from JCB, Caterpillar, John Deere, and New Holland. It features a robust build, a powerful hydraulic system, and a reputation for strong breakout force and lifting capacity.
Technical Highlights

• Engine: Volvo D4D, turbocharged diesel
  
• Power Output: 90 hp
  
• Operating Weight: Approx. 18,973 lbs
  
• Loader Lift Capacity: 7,619 lbs
  
• Backhoe Dig Depth: Up to 17.93 ft (with extendable dipper)
  
• Hydraulic Flow: 42 gal/min
  
• Relief Valve Pressure: 3,625 psi
  
• Transmission: Powershuttle, 4 forward and 4 reverse gears
  
• Bucket Options: 4-in-1 loader bucket, extendable backhoe boom
  

Terminology Notes

• Breakout Force: The maximum force the bucket can exert to break into material.
  
• Extend-a-Hoe: A telescoping dipper stick that increases reach and dig depth.
  
• Boom Lock: A hydraulic or mechanical safety feature that secures the backhoe boom during transport.
  
• Powershuttle Transmission: Allows shifting between forward and reverse without clutching.
  
• 4-in-1 Bucket: A multi-function bucket that can open for grabbing, dozing, and dumping.
  

Field Performance and Operator Feedback
Operators often praise the BL70 for its strong digging capabilities and loader performance. Compared to competitors like the Deere 310 or CAT 420, the BL70 holds its own in trenching and lifting tasks. One contractor noted its ability to outperform regional favorites in sewer and water installations, especially when equipped with the 4-in-1 bucket and flip-back forks.
However, several recurring issues have surfaced:

• Boom Lock Freezing: In cold climates, the boom lock cylinder tends to freeze, making it difficult to secure the backhoe during transport.
  
• Weak Heater Fan: The cab heater struggles in winter, possibly due to clogged filters or underpowered fans.
  
• Battery Master Switch Failures: Multiple reports of the switch breaking under normal use.
  
• Seat Swivel Grinding: The operator seat may grind or resist when rotating, especially in early production units.
  
• Service Light Persistence: The dashboard service light often remains on despite maintenance, requiring a specific ignition sequence to reset.
  

Anecdotes from the Field
One operator recalled a winter job where the boom lock froze solid, forcing the crew to manually secure the boom with chains. Another shared a story of replacing the seat under warranty after it refused to swivel smoothly. A third noted that despite minor annoyances, the BL70’s lifting power allowed them to handle 8" water mains with ease—something their previous machine struggled with.
Design Quirks and Engineering Trade-Offs
The BL70 uses a single-piston loader arm design, which can cause abrupt tilting when lifting heavy loads. This design lacks the mechanical kinematics found in dual-cylinder systems, leading to uneven material spread when dumping. While this simplifies maintenance, it can be frustrating during precision loading tasks.
The hydraulic system, built by Rexroth, features flow-sharing technology. While efficient, some users feel it slows cycle times during simultaneous operations. Cab finishing also drew criticism, with some noting loose trim and limited vent placement.
Historical Context and Brand Evolution
Volvo’s acquisition of Akerman and Samsung’s excavator division influenced the BL70’s design. Akerman was known for its robust, technologically advanced excavators, and some of that DNA made its way into Volvo’s backhoe line. However, the shift toward mass production and cost efficiency led to compromises in build quality and resale value.
In the early 2000s, Volvo offered attractive financing—3-year warranties and 0% interest—which boosted initial sales. Yet by the late 2000s, resale prices dropped sharply, raising concerns about long-term reliability and market perception.
Maintenance Tips and Operator Wisdom

• Clean heater filters regularly to improve airflow
  
• Use dielectric grease on battery switch terminals to prevent corrosion
  
• Lubricate seat swivel mechanism annually
  
• Disconnect boom lock from seat sensor if it malfunctions
  
• Reset service light using ignition switch sequence (consult manual or dealer)
  

Conclusion: A Machine of Muscle and Minor Mayhem
The Volvo BL70 is a capable, well-engineered backhoe loader with the muscle to tackle demanding jobs. Its strengths lie in breakout force, lifting capacity, and operator comfort. Yet it’s not without quirks—especially in cold weather and electrical reliability. For those who understand its nuances and maintain it diligently, the BL70 remains a valuable asset. As one seasoned operator put it, “It’s not perfect, but when it digs, it digs like it means it.”