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Operate a tracked dozer

DESCRIPTION

Unit Standard (SAQA Reg. No 262729)

A dozer short for bulldozer is a continuous tracked tractor with a substantial wide metal plate (blade) that is mounted to the front of the tractor. Dozers are large and powerful tracked machinery and the tracks provide them with ground holding capability and mobility in all kinds of terrains. The torque divider is designed to transform the engine power in order to enhance the dragging capacity. Commonly a dozer is used to move significant magnitude of soil, sand, debris, obstacles, clear roads and bushes.

Operators who are not adequately trained in tracked dozer operations are at great risk of injury because of their lack of understanding in the principles of operations that allow tracked dozers to move sand, soil, debris and other material.

Successful candidates credited with this unit standard are able to:

  • Demonstrating knowledge of the functions of a tracked dozer.
  • Planning for work activities and prepare work area.
  • Starting and shutting down tracked dozer.
  • Operating tracked dozer.
  • Transporting tracked dozer to and from site.

COURSE DURATION:

  • 5 Days Novice
  • 1 Day Re-certification

NQF LEVEL: 2

CREDITS: 15

Quality Assured Partner: Construction Education And Training Authority

Category:

Description

The qualifying learner will be able to operate a tracked dozer by understanding the functions of starting, shutting down and operating procedures for the machine. Learners who master the applied competence described in this unit standard will contribute to the development of a professional community of Construction Plant operators. The area of focus of this course will be;

Demonstrate knowledge of the functions of a tracked dozer

  • Parts & Function
  • Controls & Instruments Overview
  • Electronic Monitoring System (EMS)
  • Basic EMS Symbols
  • Warning Category Levels

Gauge & Indicators on the Instrument Panel

  • Temperature Gauges
  • Light Switches
  • Windshield Wiper/Washers

Heating & Air-conditioning Controls

  • Fan Control
  • Temperature Control
  • Heating & Air-conditioning  System Operation

Dozers Main Components

  • Dozer Blade
  • Straight Blade
  • Angle Blade
  • “U” Blade
  • Rippers
  • Winches

Tracks & Track Frame

  • Track Assembly
  • Track Chain
  • Track Shoes
  • Track Frame
  • Track Frame Rollers
  • Front Idler
  • Recoil Spring
  • Track Adjusting Mechanism

Demonstrate Function of the Tracked Dozer

Operate a Tracked Dozer

Transport Tracked Dozer to and from Site

  • Dozer Safety
  • Purpose & Use

General Safety Information

  • Crushing & Burn Prevention
  • Fire & Explosion Prevention
  • Machine Start-up Safety
  • Engine Start-up & Operating Safety
  • Machine Operating Safety
  • Machine Parking Safety
  • Transporting, Loading & Unloading
  • Shipping
  • Machine Towing Safety

Precaution for Maintenance

  • Workplace Clean & Tidy
  • Personnel
  • Attachments
  • Noise

Precautions

  • Precaution When Using Hammer
  • Welding Repairs
  • Removing Battery Terminals
  • Precaution With High-Pressure Oil
  • Handling of High Pressure Hoses
  • Waste material
  • Maintenance of Air-conditioners
  • Compressed Air
  • Periodic Parts Replacement
  • Personnel Protective Equipment
  • Safety Rules

Operating Procedures

  • Hooter Signals
  • Road Signs
  • Safety Risk Controls
  • Accident Reporting
  • Breakdown
  • Direction of Travel
  • Precaution When Traveling
  • Precaution When operating a Dozer

Close Down Procedures

  • Parking the Dozer

Start & Shut-down Tracked Dozer

Daily Inspections

  • Pre-start Checks
  • Dozer Level Checks
  • Access & Exit Procedure

Start the Dozer

  • Starting With an External Air Supply
  • Cold Engine Idle Procedure
  • Engine Starting With Jumper Cables
  • Use of Jumper Cables
  • Auxiliary Start-up
  • After Starting the Engine
  •  Secondary Brake Testing
  • Procedure for Warming-up the Engine
  • Extreme Care When Leaving Engine Running

Moving-off & Operational Checks

Shutting Down Procedures

Safety Summary

Pre-shift Checklist – Tracked Dozer

Daily Maintenance Service Card

Logbooks & Other Checklists

Principles of Operations

  • Precautions When Operating
  • Operating Capacity

Mechanical Appreciation

  • Engine

Transmission Types

  • Manual Transmission
  • Automatic Transmission

Differentials & Final Drives

Undercarriage

Steering System

Hydraulic System

  • Hydraulic Reservoir
  • Strainers & Filters
  • Hydraulic Pumps
  • Control Valves
  • Hydraulic Cylinders
  • Flexible Hoses
  • Fuel Systems
  • Electrical Systems
  • Storage Battery
  • Charging System
  • Lightning System
  • Braking System

Cooling System

  • Air Cooled
  • Liquid Cooling System
  • Radiator
  • Radiator Pressure Cap

Proximity of Other Machines

  • Warning Devises
  • Oil Pressure Gauge
  • Air Pressure Gauge
  • Hydraulic Pressure Gauge
  • Hydraulic Temperature Gauge
  • Fuel Level Gauge
  • Warning Signals
  • Warning Operations
  • Safety Features

Troubleshooting

Plan for Work Activities and Prepare Work Area

Start and Shut Down Tracked Dozer

Practical Operations

  • Attachment Controls
  • Blade Control
  • Blade Tilt Control
  • Ripper Control
  • Parking Brake
  • Service Brake
  • Accelerator
  • Engine Shutdown
  • Parking/Secondary Brake
  • Accelerator Pedal
  • Transmission Direction & Speed Control
  • Transmission Neutral Lock

Machine Operations

  • Operating Techniques
  • Clearing Bush & Trees
  • Trees with large root systems
  • Stumping
  • Removing Rocks and Boulders
  • Working in Wet Material
  • Bulldozing
  • Side by Side Dozing
  • Slot Dozing
  • Spreading
  • Backfilling
  • Ditching
  • Sidehill Excavation
  • Finishing Side Slopes
  • Push Dozer
  • Safe Parking
  • Engine Stopping
  • Leaving the Machine

General Driving – Types of Hazards

  • Stationery Hazards
  • Moving Hazards
  • Proximity Hazards
  • Ground Hazards

The System of Vehicle Control

  • Identify
  • Predict
  • Decide
  • Execute

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Entry level requirements into this programme?

All new entrants intended under this code (Novice or Re-licensing) shall provide training institution with the required documents as specified under the National Code Of Practice (NCOP No 43835) Promulgated 23 October 2020

  • An employer declaration or medical certificate confirming the medical fitness of the learner to undergo the intended training
  • An eye test results issued by a person trained to carry out such tests
  • All new entrants intended under this code will be required to hold at least a Grade 9 (Std 7) school certificate
  • Learners shall provide training institution with a valid certified copy of his/her Identity Document
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