Brands: Sperry New Holland / New Holland Construction
Equipment Type: Skid Steer Loader
Manuals Type: Service Manual
Machine Model & Serial Number: L-555 (L-550 Series)
Region: N/R
Book Code: 40055510
Issued: Reprinted Edition
Language: English
Pages: 116
File Format: Portable Document Format (PDF)
Remark: The definitive 116-page technical service manual for the L-555 skid steer loader. Nuclear Level Detail: This manual focuses on the complete overhaul of hydraulic and structural systems. Features exhaustive teardown and reconditioning procedures for gear pumps and lift cylinders. Includes critical boom cylinder cushion valve diagnostics and precise labor guides for maintenance planning. Provides full electrical and hydraulic schematics, along with essential hardware torque data for heavy-duty structural integrity.
Table of contents
- SECTION 6 - GEAR PUMP
- Specifications
- Removal
- Disassembly
- Inspection
- Reassembly of Gear Pump
- SECTION 7 - BOOM AND BUCKET CYLINDERS
- Boom Cylinders
- Cylinder removal
- Disassembly
- Inspection
- Reassembly
- Bucket Cylinders
- Cylinder removal
- Disassembly
- Inspection
- Reassembly
- Boom cylinder cushion valve
- Labor Guide
- Specifications
- SECTION 13 - DIAGRAMS AND TECHNICAL DATA
- Hydraulic Diagram
- Wiring Diagram
- Circuit Diagram
- Dimensions
- Installation of Adjustable Fittings in Straight Thread O-Ring Bosses
- Minimum Hardware Tightening Torques
- Standard Torque Data for Hydraulic Tubes and Fittings
Professional Surgical Insight
When servicing the L-555 skid steer loader, strict adherence to Section 13's tightening torques is critical to prevent structural failure of the boom assembly. During gear pump reassembly in Section 6, ensuring the cleanliness of the O-ring bosses and using precise torque data for hydraulic tubes is mandatory to avoid high-pressure leaks. The boom cylinder cushion valve requires specific inspection to ensure smooth operation under full load. Always use genuine service parts to maintain the safety standards emphasized throughout the manual.
