10-17-2025, 03:17 PM
Quick Answer
The New Holland L555 skid steer uses a spring-applied, hydraulically released parking brake system. Without engine power, the brakes remain engaged. To move the machine, you must manually release the brake by accessing the actuator or using hydraulic pressure from an external source.
New Holland L555 Background and Brake System Design
The New Holland L555 was introduced in the late 1980s as part of the brand’s push into compact loader markets. Built for farm, construction, and utility work, the L555 featured a hydrostatic drive, mechanical controls, and a robust frame. By the early 1990s, New Holland had sold thousands of units across North America, with the L555 earning a reputation for simplicity and durability.
The parking brake system on the L555 is designed for safety. When the engine shuts off or hydraulic pressure drops, the brake automatically engages via spring force. This prevents unintended movement during shutdown or maintenance. The brake is typically located on the drive motor or transmission output shaft and is released by hydraulic pressure generated by the engine-driven pump.
Challenges When the Engine Is Dead
If the engine is inoperable, the hydraulic pump cannot generate pressure to release the brake. This creates a problem for towing or relocating the machine. Common symptoms include:
There are two main approaches to releasing the brake manually:
In Colorado, a mechanic faced a dead L555 parked on a slope. With no engine power and the brakes locked, he fabricated a threaded rod to compress the brake spring manually. After securing the actuator, he used a winch to pull the machine onto a trailer. The entire operation took two hours but avoided damage to the drivetrain.
Recommendations for Long-Term Storage
Releasing the brakes on a New Holland L555 without engine power requires either manual compression of the spring actuator or external hydraulic pressure. Understanding the brake system’s fail-safe design is critical to avoid damage and ensure safe relocation. With the right tools and knowledge, even a dead machine can be moved without compromising its components.
The New Holland L555 skid steer uses a spring-applied, hydraulically released parking brake system. Without engine power, the brakes remain engaged. To move the machine, you must manually release the brake by accessing the actuator or using hydraulic pressure from an external source.
New Holland L555 Background and Brake System Design
The New Holland L555 was introduced in the late 1980s as part of the brand’s push into compact loader markets. Built for farm, construction, and utility work, the L555 featured a hydrostatic drive, mechanical controls, and a robust frame. By the early 1990s, New Holland had sold thousands of units across North America, with the L555 earning a reputation for simplicity and durability.
The parking brake system on the L555 is designed for safety. When the engine shuts off or hydraulic pressure drops, the brake automatically engages via spring force. This prevents unintended movement during shutdown or maintenance. The brake is typically located on the drive motor or transmission output shaft and is released by hydraulic pressure generated by the engine-driven pump.
Challenges When the Engine Is Dead
If the engine is inoperable, the hydraulic pump cannot generate pressure to release the brake. This creates a problem for towing or relocating the machine. Common symptoms include:
- Wheels locked despite control lever movement
- No response from drive motors
- Resistance when attempting to push or pull the machine
There are two main approaches to releasing the brake manually:
- Access the Brake Actuator Directly
- Locate the brake housing near the drive motor or transmission.
- Remove the cover to expose the spring and actuator.
- Use a threaded bolt or mechanical lever to compress the spring manually.
- Secure the actuator in the released position using a locking pin or bracket.
- Locate the brake housing near the drive motor or transmission.
- Apply External Hydraulic Pressure
- Connect a portable hydraulic pump to the brake release port.
- Supply pressure (typically 1,500–2,000 psi) to overcome the spring force.
- Maintain pressure while towing or relocating the machine.
- Disconnect after the machine is in position.
- Always chock the wheels before attempting brake release.
- Use proper lifting equipment if accessing components under the frame.
- Avoid towing the machine with brakes engaged—it can damage the drive motors and chain case.
- If unsure, consult a service manual or technician familiar with New Holland systems.
In Colorado, a mechanic faced a dead L555 parked on a slope. With no engine power and the brakes locked, he fabricated a threaded rod to compress the brake spring manually. After securing the actuator, he used a winch to pull the machine onto a trailer. The entire operation took two hours but avoided damage to the drivetrain.
Recommendations for Long-Term Storage
- If storing a non-running L555, consider releasing the brake manually to allow future movement.
- Label the brake release mechanism clearly for future technicians.
- Periodically inspect the brake actuator for corrosion or debris buildup.
Releasing the brakes on a New Holland L555 without engine power requires either manual compression of the spring actuator or external hydraulic pressure. Understanding the brake system’s fail-safe design is critical to avoid damage and ensure safe relocation. With the right tools and knowledge, even a dead machine can be moved without compromising its components.
