Paddock Excavator Rock Breaker Attachment

User and Maintenance Manual

Introduction

Paddock equipment is built to make light work of the toughest jobs. Quality components and smart engineering design deliver high performance attachments. Paddock offers a full range of attachments for trenching, auguring, rock breaking, and bulk materials transfer.

Congratulations on choosing the Paddock Excavator Rock Breaker. This manual is an important part of your equipment, providing critical safety information and operating instructions to help you use and maintain your excavator safely and correctly.

NOTE: This manual is in addition to the Excavator manual. The Excavator manual must be adhered to at all times.

The rock breaker attachment is used for breaking up concrete driveways and large rocks. It uses a nitrogen charge and the hydraulics from the excavator to deliver exceptional forces to the chisel tip, which breaks the hardest materials with ease. The rock breaker is perfect for breaking larger rocks and concrete sections into smaller, more manageable pieces. The rock breaker greatly increases the functionality of a common excavator.

Don't Compromise Quality

When working with machinery, equipment quality should not be compromised. Cheap copy machines break down, costing you money. Paddock only uses the highest quality materials, making them a machine for life.

Quick Coupling and Auxiliary Hydraulics Standard

Paddock excavators feature a simple and reliable quick hitch design as standard. This design makes it fast for the operator to loosen the hitch and switch between attachments without having to hammer out pins. The design means switching between a ripper and a larger batter bucket is time-efficient and realistic during normal operation.

Specifications

SPEXROCK
Pressure8 - 11 MPa, 1160 - 1600 psi
Energy80 - 100 Joule
Chisel Diameter35 mm
Working Height95 cm
Length36 cm
Width22 cm
Weight75 kg

Excavator Rock Breaker Components

A. Nitrogen Recharge Kit

B. Rock Breaking Attachment

C. Quick Hitch

D. Hydraulic Lines

E. Nitrogen Point

F. Tool Kit

G. Retaining Pin

H. Pointed Chisels

Safety Operation

SAFETY IS THE RESPONSIBILITY OF THE OPERATOR

WARNING: Before operating or maintaining the excavator, it is essential to follow all safety operation instructions. Read and understand the operator's manual, all safety labels, and decals on the machine.

All repairs, adjustments, maintenance, and operational checks must be carried out strictly in accordance with the manual.

Failure to comply may result in serious injury or death.

Training Recommendation

This manual does not replace hands-on training. Operators are strongly encouraged to undergo third-party machinery training to ensure safe and competent operation.

Safety Guidelines

Most accidents can be prevented by following these basic rules:

Safety Symbols

All symbols appear in the manual and on the excavator's safety labels.

Before First Use

Each excavator is fully tested and inspected before delivery. During the first 100 hours, operate with extra care to ensure a proper break-in period.

Initial Operation Guidelines:

Safety Labels and Decals

Excavators are equipped with clearly visible warning decals. These must be understood and never removed or defaced.

Examples of Decals:

Always Remember

Safety - General Precautions

You are responsible for adhering to all relevant safety regulations and legal requirements set by governing authorities. Always operate, inspect, and maintain machinery in accordance with the manufacturer's guidelines.

Many accidents are caused by a failure to follow basic safety procedures. Most incidents can be prevented by identifying potential hazards ahead of time.

Before Operating the Machine:

Compliance with All Safety Regulations

Only trained and qualified personnel are permitted to operate, inspect, or maintain this machine.

During all machine operations, inspections, and maintenance activities, all applicable rules, regulations, precautions, and safety measures must be fully understood and strictly followed.

Do not operate, inspect, or maintain the machine under the influence of:

Handling Abnormal Conditions

If any abnormalities are detected during operation or maintenance – such as:

Immediately stop operation and contact the appropriate sales or service agent. Do not resume operation until the issue has been properly identified and resolved.

Wear Suitable Clothing and Protective Equipment

To ensure personal safety and prevent accidents in the workplace, follow these clothing and PPE (Personal Protective Equipment) guidelines:

Avoid Unsafe Clothing

Wear Appropriate Protective Gear

Based on your work environment and tasks, the following PPE should be worn:

Task-Specific Protection

When using tools like grinders, jackhammers, or compressed air, always wear:

Noise Protection

Be Careful to Avoid Crushing Injuries

Serious injury or death can occur if body parts are caught between moving components. Always stay alert and follow these precautions:

Do Not Place Hands, Feet, or Body Parts:

Why It's Dangerous:

Stay Safe By:

Use of Optional Products

Before installing any optional products or attachments, consult Paddock to ensure compatibility and safety.

Do Not Modify the Machine

Precautions Before Operation

Understand the Work Area

Before beginning any operation, it is essential to assess the work area for safety. This includes:

Coordinate with Site Administrators

Roadside Operation

Operation in or Near Water

Ensure the area is stable and safe before proceeding.

Bridge and Structure Safety

Keep the Machine Clean at All Times

Maintaining cleanliness is essential for safe and efficient operation. Follow these precautions to reduce the risk of accidents or damage:

Prevent Slips and Falls

Remove Unnecessary Items

Prevent Fire Hazards

Daily Inspection and Maintenance

Safety in the Driver's Cab

Safe Entry and Exit Procedures

Pre-Start Safety Checks

To ensure the safety of all personnel, follow these steps before starting the machine:

1. Clear the Area

Do not start the machine until the area is confirmed clear.

2. Inspect for Warning Signs

3. Signal Before Starting

Cold Weather Safety Precautions

When operating in cold climates, take extra precautions:

USE OF STARTING FLUID CAN LEAD TO EXPLOSION, SEVERE INJURY, OR DEATH.

Operation Guide

Read this manual before using the excavator. Take care within the first 100 hours.

For New Excavators:

Excavators have a 100-hour run-in period designed to enhance their performance and extend service life. During this period, new excavators should be operated according to the following three steps.

HoursLoad
Within 10 hoursAbout 60%
Within 100 hoursAbout 80%
After 100 hours100%

Daily Checks:

When the Machine is Found to be Abnormal

If any abnormalities are detected during the operation, inspection, or maintenance of the machine – such as unusual noise, vibration, odours, oil leakage, or error alarms – stop using the machine immediately. Notify the sales or service agent without delay and take appropriate corrective measures. Do not resume operation until the issue has been fully resolved.

Safety Drive

CAUTION: Match your driving speed to the condition. The excavator's centre balance point changes when lifting and lowering the arms and attachments; take care especially if operating on slopes. Keep the excavator on level ground when operating and turning. Lower lift arms entirely when moving and lift bucket to proper height, to avoid obstacles.

DANGER - TAKE CARE TO LOWER OPERATING SPEED IF ARMS ARE RAISED. AVOID SUDDEN CHANGES IN DIRECTION AS THIS CAN CAUSE A ROLL OVER.

WARNING: This product manual can't teach you how to safely operate a complex excavator. Users should consider undergoing training by a 3rd party provider who specialises in small machinery prior to operation.

Avoid overloading the excavator as this has potential to bend the excavator's hitch plate. Examples of ways to overload the excavator are as follows:

Connecting Attachments

Only Use Approved Parts:

Risks of Using Non-Approved Parts:

How to Use Quick Hitch

  1. Raise the arm off the ground to a workable height.
  2. Tilt the bucket to ensure it doesn't fall once the mounting is loose.
  3. Using the 22mm spanner, loosen the nyloc nut on the top of the quick hitch.
  4. Loosen the head of the bolt on the bottom of the quick hitch. Doing this will raise the bottom jaw. Once the jaw has moved enough off of the bottom bolt on the bucket, you should be able to lift the bucket and still have it pivoting in the top jaw.
  5. Lower the bucket onto the ground and reverse the steps to install a new bucket.

Connecting Hydraulic Hoses to the Excavator

There are two different ways to connect the hydraulic hoses. Follow the steps below for your excavator:

Preparation

  1. Park the excavator on level ground.
  2. Lower the arm to a height that is easily accessible for mounting.
  3. Shut off the engine and allow the engine and hydraulic oil to cool to ambient temperature.

Valve Setup

  1. Close the hydraulic valves by turning them clockwise 90°. The valve debossing should now be perpendicular to the arm.
  2. If you do not have the valve type, please ignore this step.
  3. Remove the screw nut from the valve to expose the male thread:
    • Hold the male thread still while removing the screw nut.
    • Cover the exposed male thread with plastic wrap (not included).
    • Do not remove the male thread itself.

NOTE: If you accidentally remove only the outer shell of the screw nut, remove the core as well to fully expose the male thread.

Keep the screw nuts in a clean, protected area. They may be needed later when detaching attachments and resealing the valves.

Prepare Ports

  1. Remove the two nuts sealing the hydraulic ports on the attachment. Cover the exposed ports with plastic wrap.

NOTE: If the hose ends are sealed with plastic plugs, remove them.

If there are no plugs, inspect the ports and clean them using pressurized air if needed.

Always cover all exposed ends with plastic wrap.

Contamination inside the ports may damage your excavator's main hydraulic pump.

Connecting the Hoses

Final Steps

  1. Open the hydraulic valves by turning them counterclockwise 90° so that the debossing is now parallel to the arm.
  2. Test the excavator:
    • Ensure the hose length allows for the full range of arm movement.
    • Avoid over-extending the hydraulic cylinders.
    • Check all hoses and fittings for leaks.

Hydraulic Rock Breaker Operation & Safety Guide

DO NOT Use the Hammer as a Hoist

Proper Operating Practices

  1. Preload the Chisel Before Activation
    • Always press the chisel tip firmly against the material before engaging the hammer.
    • This prevents damage and ensures effective impact.
  2. Keep the Hammer Perpendicular
    • Do not slant the hammer.
    • A slanted position can bend or break the chisel.
  3. Maintain Proper Boom Alignment
    • Keep the boom's direction of force aligned with the chisel's penetration path.
    • Use the boom cylinder to apply downforce.
    • Use the arm cylinder for proper alignment.
    • Keep the tool tangent to the boom's arc.
  4. Avoid Blank Hammering
    • Stop hammering immediately once the material is broken.
    • Blank hammering can overheat the hydraulic system and wear the retaining pin prematurely.
  5. Do Not Use Chisel as a Pry Bar
    • Prying causes:
      • Premature bushing wear
      • Chisel bending or breakage
    • Instead, when penetrating soft material: Move the hammer slightly fore and aft to create a cone-shaped hole. This allows dust and heat to escape, improving penetration.
  6. Limit Hammering Time Per Spot
    • Do not hammer in the same position for more than 30 seconds.
    • If the material isn't breaking, choose another spot.
    • Prolonged hammering causes:
      • Reduced efficiency
      • Overheated chisel tip
      • Increased oil temperature
      • Shortened tool life
  7. Start with a Free Face
    • Begin hammering at a free edge, not the center of large objects.
    • This reduces the chance of the chisel becoming stuck.
  8. Lower the Hammer Gently
    • When positioning the hammer, do not drop it onto the material.
    • Watch descent speed to avoid tool or machine damage.
  9. Do Not Nudge Heavy Objects
    • Avoid using the hammer to push or nudge large items.
    • This causes uneven wear on the arm and attachment pins.
  10. Cylinder Use Caution
    • Never over-extend or over-retract hydraulic cylinders.
    • Repeated misuse will damage the cylinder components.
  11. Do Not Submerge the Hammer
    • Only the chisel may be submerged.
    • The hammer body is not watertight; water exposure will damage internal components.
  12. Avoid Hammer Contact with the Boom
    • When tucking or storing the hammer: Ensure the chisel is clear of the boom to prevent contact.

General Operation Steps

  1. Check Hydraulic Settings Ensure the mini excavator's hydraulic flow and pressure match the hammer's requirements.
  2. Warm Up Machine Start the engine and let it warm up based on the ambient temperature.
  3. Position Hammer Use the boom and arm to bring the hammer over the target material.
  4. Preload the Chisel Gently press the chisel tip against the material.
  5. Begin Hammering Activate the hammer while maintaining a perpendicular angle.
  6. Stop Once Material Breaks Deactivate the hammer and lift the tool once the material has fractured.

NOTE: Pressure and impact force should be adjusted based on the material type and conditions.

Chisel Replacement Instructions

Safety Precautions

Inspect for Damage

Replace the chisel if there is visible chipping, cracking, breaking, or bending.

Replacement Procedure

  1. Detach the Hammer Assembly Disconnect the hammer from the excavator by reversing the installation steps.
  2. Locate the Retaining Pin Plug It is on the side of the hammer near the chisel base.
  3. Remove the Retaining Pin Plug
    • Use a plug driver aligned with the plug.
    • Strike the driver with a hammer to push the plug outward.
  4. Extract the Plug Once it protrudes, pull the plug out fully.
  5. Remove the Retaining Pin If it's tight, gently tap the surrounding area with a rubber mallet.
  6. Replace the Chisel
    • Remove the old chisel.
    • Insert the new chisel, ensuring the indented end faces the retaining pin.

    If the indented end is incorrect, the retaining pin cannot be reinstalled.

  7. Reinsert the Retaining Pin Ensure it locks the chisel in place by attempting to pull the chisel gently.
  8. Reinsert the Plug Drive it securely into place with the plug driver and hammer.
  9. Reattach the Hammer Mount it back onto the excavator if further use is required.

Lubrication Instructions

Safety Precautions

DO NOT use kerosene or any flammable substitutes.

When to Lubricate

Lubricate when movement becomes difficult or produces squeaking sounds.

Lubrication Steps

  1. Clean Grease Points Remove any dirt, grime, or debris to avoid contamination.
  2. Apply Lithium Grease Grease the inside of the pin nut and other key rotating points.

Recharging the Hydraulic Hammer

This hydraulic hammer features a cylinder structure with a nitrogen chamber to reduce recoil and increase impact efficiency. Nitrogen acts as a dampener, cushioning the recoil of the chisel during operation.

Recharge Immediately If You Notice:

Continuing to operate the hammer in this state may cause damage to the excavator and the hammer.

Safety Precautions

Recharging Procedure

Tools Required:

Step-by-Step Instructions

  1. Charge Nitrogen Canister Fill the canister at a hydrogen fuelling station (not air) to 13–14 kg/cm² (185.1–199.1 psi).
  2. Gather the Toolkit Ensure the kit includes:
    • Pressure gauge
    • Charging hose
    • Nitrogen canister
  3. Connect the Hose to the Canister
    • Attach the 5/8" port of the hose to the canister's outlet port.
    • Tighten the connection.
  4. Connect the Hose to the Gauge
    • Attach the other end of the hose to the gauge intake port.
    • Tighten securely.
  5. Open the Hammer Charge Port
    • Use the hex wrench to remove the charge port cap on the hammer.
    • If stuck, use an extension rod for extra leverage.
  6. Attach the Nozzle to the Hammer
    • Insert the charge nozzle into the charge port.
    • Turn the nozzle knob to lock it securely in place.
  7. Prepare the Nozzle Lever
    • Ensure the gauge valve is closed.
    • Pull the nozzle lever up to its full extent.
  8. Initiate Charging
    • Briefly open the nitrogen canister valve for approximately 1 second, then close it.
    • Charging typically lasts about 1 second.
  9. Check the Pressure Gauge Gently press the nozzle lever to display pressure on the gauge.

Interpret the Reading:

  1. Disconnect and Secure Components
    • Remove the gauge and nozzle from the hammer.
    • Replace and tighten the charge port cap.
    • Disassemble the attachment and store it properly.

Maintenance

CAUTION: If you leave the key in the ignition switch, the engine may accidentally start, potentially causing serious injury to yourself or others nearby.

Before performing any maintenance, turn off the engine, remove the key from the ignition, and disconnect both the hydraulic and electrical connections between the attachment and the engine.

Weekly Checks

Perform the following once per week:

First 100 Hours or 3-6 Months

To maximize lifespan and maintain warranty, gear oil must be:

Yearly or Every 500 Hours

Gear oil must be:

Storage

Warranty Information

The below information is an addition to information covered under the standard Terms and Conditions of sale at your place of purchase.

Accessories and Attachments

12 months or 1,000hrs (whichever comes first) from date of purchase.

Hoses

Hydraulic hoses are warranted against manufacturing defects for a period of 1yr or 1,000hrs (whichever comes first) from date of purchase.

Exclusions

Normal wearing parts and consumables are not covered by warranty. Examples include: oil filters, oil, muffler, belts, chains, cutting teeth, blades, tires, tracks, sprockets. Attachments damaged, misused, not maintained, adjusted incorrectly, effected by fire, rain, accident or flood will not be covered by warranty.

Support Information

Sales Enquiries:

P: 1300 246 406

E: info@paddockmachinery.com

Support Requests

Via the website support request - www.paddockmachinery.com

Address:

47 Eagleview Place

Eagle Farm QLD 4009

Australia

Models: SPEXROCK, SPEXROCK Breaker Attachment Excavator Rock, Breaker Attachment Excavator Rock, Excavator Rock, Rock

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References

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