Bobcat S66 Skid-Steer Loader Service Repair Manual
Language English, Format: PDF
All Service Manual includes Wiring and Hydraulic Schematics
B4SA11001 & Above
B51U11001 & Above
Bobcat S66 Skid-Steer Loader Service Manual
Operation and Maintenance Manual
Bobcat S66 SERVICE MANUAL CONTENTS:
📑 Table of Contents
1. General Information
Safety instructions and precautions
Specifications and capacities
Machine identification and serial number locations
Standard maintenance practices
2. Routine Maintenance
Service intervals and lubrication schedule
Fluids, filters, and recommended lubricants
Preventive maintenance checklist
3. Hydraulic System
Hydraulic circuit description and diagrams
Hydraulic pump and motor servicing
Cylinder disassembly and repair
Valve function and adjustments
Troubleshooting hydraulic issues
4. Electrical System
Wiring diagrams and schematics
Battery, starter, and alternator servicing
Fuses, relays, and control modules
Diagnostic procedures and electrical testing
5. Engine Service
Engine specifications and performance data
Cooling and fuel system servicing
Air intake and exhaust system
Engine disassembly and reassembly
Testing, adjustments, and troubleshooting
6. Drivetrain and Transmission
Hydrostatic drive system
Axles and wheel hub service
Drive chains and sprockets
Transmission troubleshooting
7. Steering and Braking System
Steering control adjustments
Brake system components
Service and replacement procedures
8. Loader and Work Equipment
Lift arms and attachment system
Quick coupler operation and servicing
Loader linkage inspection and repair
Hydraulic attachment operation
9. Body and Frame
Operator cab removal and installation
ROPS/FOPS safety frame
Panels, covers, and access points
10. Troubleshooting and Diagnostics
Common fault codes
Mechanical and hydraulic troubleshooting charts
Step-by-step problem-solving methods
11. Technical Data and Schematics
Torque specifications
Pressure testing charts
Wiring and hydraulic diagrams
Adjustment values and settings
Bobcat S66 service manual instructions are necessary before operating or servicing machine. Read and understand the Operation & Maintenance Manual, Operator s Handbook and signs (decals) on the machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments, repairs or service. Untrained operators and failure to follow instructions can cause injury or death.
These manual is for the Bobcat S66 Skid-Steer Loader . It provides necessary servicing and adjustment procedures for the Bobcat S66 Skid-Steer Loader and its components and systems. Refer to the Operation & Maintenance Manual and service manual for operating instructions, repair, starting procedure, daily checks, etc.
