Module 7: Equipment Operation & Maintenance 

1. Introduction to Demolition Machinery

Demolition equipment is engineered for power, precision, and durability in high-impact environments. Proper machine selection and operation are critical for safety and efficiency.

A. Categories of Demolition Equipment

1. Hydraulic Excavators

• Primary tool for most demolition jobs

• Can be fitted with specialized attachments (shears, hammers, grapples)

• Operating weight ranges from 10 to 100+ tons

2. High-Reach Excavators

• Extended booms (up to 100 feet) for tall structures

• Minimize collateral damage in urban settings

• Require counterweight systems for stability

3. Bulldozers

• Used for final grading and debris pushing

• Equipped with reinforced blades and rippers

4. Skid Steers & Mini Excavators

• For confined spaces and precision work

• Common in selective demolition

B. Specialized Attachments

• Hydraulic Breakers (for concrete)

• Shears (steel cutting)

• Crushers (material processing)

• Grapples (debris handling)

2. Basic Operation of Key Machines

A. Excavator Operation Fundamentals

1. Pre-Operation Inspection

• Check hydraulic fluid, tracks, and attachment security

• Verify safety systems (ROPS/FOPS)

2. Operating Techniques

• Maintain stable footing on uneven terrain

• Use the machine's weight, not just hydraulic force

• Avoid side-loading attachments

3. Demolition-Specific Skills

• Top-down demolition sequence for walls

• Pinching vs. swinging techniques

B. Bulldozer Operation

1. Blade Control

• Angle adjustments for material spreading

• Down pressure management

2. Ripper Use

• Breaking up compacted surfaces

• Depth and angle optimization

C. High-Reach Machine Considerations

1. Stability Management

• Always work within load charts

• Wind speed monitoring (max 20 mph typically)

2. Precision Demolition

• Controlled nibbling technique

• Avoid sudden movements

3. Routine Maintenance and Safety Checks

A. Daily Maintenance Procedures

1. Fluid Checks

• Hydraulic oil (contamination monitoring)

• Engine oil and coolant levels

2. Track/Wheel Inspection

• Tension adjustments

• Wear pattern analysis

3. Attachment Maintenance

• Greasing pivot points (every 8-10 hours)

• Hose and connection inspections

B. Critical Safety Systems

1. ROPS/FOPS Certification

• Rollover and falling object protection

• Never modify without manufacturer approval

2. Emergency Shutdown

• Function testing

• Operator training on quick-stop procedures

3. Fire Prevention

• Hydraulic line shielding

• Dry chemical extinguishers on board

C. Maintenance Documentation

• Service Logs (OSHA requirement)

• Defect Reporting System

• Replacement Part Tracking

4. Advanced Operational Safety

A. Hazard Zone Management

1. Swing Radius Awareness

• Barricades and spotters for blind areas

2. Overhead Clearance

• Power line proximity rules (10 ft + 0.4 in/1kV)

B. Environmental Considerations

1. Fluid Containment

• Drip pans for parked equipment

• Spill response kits

2. Noise Reduction

• Regular muffler maintenance

• Sound-dampening panels

Conclusion

Module 7 provides comprehensive training on safe, efficient equipment operation and preventative maintenance practices. Proper machine handling reduces downtime, prevents accidents, and extends equipment lifespan in demanding demolition environments.