Work Planning and Preparation

Work Planning and Preparation

Module Introduction

Work planning and preparation are the first critical step in any task you perform as an agricultural equipment technician. This module covers all the skills required to organize, secure, and execute work efficiently and in compliance with Canadian standards. For the Red Seal exam, you must master not only the technical procedures, but also blueprint reading, cost estimating, materials management, and safety — all of which represent approximately 8 to 12% of the exam questions.

This chapter is structured to follow the real-world logic of a job site: from interpreting documents to final verification, including work station organization and risk management.

Reading and Interpreting Technical Documents

Types of Documents You Will Encounter

As an agricultural equipment technician, you consult several types of documents daily. You must be able to distinguish between them and use them correctly.

Essential Standardized Symbols

In hydraulics, the ISO 1219 standard governs symbols. You must recognize immediately:

In electrical, common symbols include:

Reading Hydraulic Schematics

To read a hydraulic schematic effectively, follow this systematic method:

Practical example: A schematic shows a fixed displacement pump of 60 L/min supplying a 4/3 closed-center directional valve controlling a double-acting cylinder. The pressure relief valve is set at 20,000 kPa (200 bar). If the cylinder has an 80 mm bore and a 40 mm rod, the maximum push force is:

F = P × A = 20,000,000 Pa × (π × 0.04²) = 20,000,000 × 0.005027 = 100,540 N ≈ 100.5 kN

Interpreting Codes and Standards

The Canadian Electrical Code, Part I (CE Code) (C22.1) applies to electrical installations, including those on fixed agricultural equipment. Rule 8-200 covers load calculations — you must know how to size a supply circuit for a piece of equipment.

For propane or natural gas systems, the CSA B149.1 standard (Natural Gas and Propane Installation Code) applies. Rules 6.2 to 6.5 cover ventilation and combustion product venting requirements.

Sequential Work Planning

Breaking Down Work into Steps

Every task can be broken down into logical phases. The S.P.O.R.T. method (Safety, Preparation, Operation, Review, Test) is a useful mnemonic tool:

Estimating Time and Costs

Accurate work time estimation is a skill assessed on the exam. Factors to consider:

Total cost calculation formula:

Total Cost = (Labor hours × Hourly rate) + Parts cost + Overhead + Taxes

Example: A transmission repair requires 6 hours of labor at $85/hour, parts at $450, overhead of 12%, and HST of 15%.

Labor: 6 × 85 = $510

Parts: $450

Overhead: (510 + 450) × 0.12 = $115.20

Subtotal: 510 + 450 + 115.20 = $1,075.20

HST: 1,075.20 × 0.15 = $161.28

Total: $1,236.48

Sequencing Operations

For complex jobs involving multiple systems, sequencing is crucial. Use the critical path method:

Example: Replacing a combine harvester engine.

Critical path: A → C → D → F → G → H → I = 1 + 2 + 3 + 3 + 2.5 + 1 + 2 = 14.5 hours

Operations B and E have 0.5 h and 1 h of float respectively.

Work Station Organization

The 5S Principles

The 5S method (Sort, Set in Order, Shine, Standardize, Sustain) applies directly to the agricultural shop:

Parts and Materials Management

Effective parts management prevents delays and errors. Key principles:

Tools and Diagnostic Equipment

The modern technician must master several types of tools:

Torque wrench: the most important tool for assembly. You must know the units: N·m (Newton-metre), lbf·ft (pound-force-foot), lbf·in. Conversion: 1 N·m = 0.7376 lbf·ft = 8.851 lbf·in.

Safety and Regulations

Lockout and Tagout (LOTO)

Lockout/tagout is mandatory before any work on motorized equipment. The CSA Z460-20 standard "Control of Hazardous Energy - Lockout and Other Methods" defines the requirements.

The six steps of lockout:

Common trap: hydraulic accumulators can store considerable energy even after the pump is stopped. You must always depressurize them according to the manufacturer's procedure.

Hazardous Energies Specific to Agricultural Equipment

Personal Protective Equipment (PPE)

Mandatory PPE in the shop includes:

Golden rule: never wear jewelry, watches, or rings when working on electrical or moving equipment.

Handling and Lifting

Agricultural equipment contains very heavy components. Safe lifting rules:

Sling tension calculation:

T = (Weight × Angle factor) / Number of legs

For a 60° angle from horizontal, the factor is 1.155. For 45°, it is 1.414. For 30°, it is 2.0.

Example: A transmission weighs 450 kg. You use two slings at 45°.

T = (450 × 1.414) / 2 = 318 kg per leg

The rated capacity of each sling must be at least 318 kg, but ideally with a safety factor of 5: 318 × 5 = 1,590 kg.

Fluid and Waste Management

Fluid Classification

Waste Management Procedures

Canadian regulations on hazardous materials (WHMIS 2015) require:

Used oils must be collected in approved containers and given to an authorized recycler. Used filters must be drained for 24 hours before being recycled or disposed of. Lead-acid batteries must be returned to the supplier or a recycling centre.

Communication and Documentation

Work Order and Service Report

The work order is a contractual document. It must contain:

Customer Communication

Effective communication with the agricultural customer is essential. Principles:

Summary

Work planning and preparation are the foundation of any successful job. Key points to remember:

Common Traps to Avoid

Final exam tip: questions in this module often involve practical situations. When reading a question, first identify the primary risk, then the correct procedure, and finally the applicable standard. This logical sequence will help you eliminate wrong answers quickly.