By the end of this chapter, you will be able to:
Mastering these skills ensures vehicles stay safe and reliable on the road, helping you become a trusted professional in motor vehicle maintenance.
Type: Individual
| Tools & Equipment | Materials |
|---|---|
| Engine compression tester kit | Cleaning cotton waste |
| Socket wrench set | Battery charger or fully charged battery |
| Spark plug socket |
| S/N | Item | Quantity |
|---|---|---|
| 1 | Vehicle with petrol engine in operational condition | 1 Pc per Candidate |
| 2 | Engine compression tester kit (including gauge and adapters) | 1 Set per Candidate |
| 3 | Socket wrench set | 1 Set per Candidate |
| 4 | Spark plug socket | 1 Pc per Candidate |
| 5 | Battery charger or fully charged battery | 1 Pc per 2 Candidates |
| 6 | Cleaning cotton waste | Sufficient per Candidate |
| 7 | Personal protective equipment (overall, gloves, safety boots, goggles) | 1 Set per Candidate |
| Items to be Evaluated | Marks Available | Marks Obtained | Comments |
|---|---|---|---|
| TASK 1: Preparation and Safety | |||
| Wore personal protective equipment (overall, gloves, safety boots, goggles) (Award 1 mark for each correctly worn PPE or zero) | 4 | ||
| Parked vehicle on a flat surface, applied handbrake and chocked wheels (Award 2 marks or zero) | 2 | ||
| Opened vehicle hood and secured it safely (Award 1 mark or zero) | 1 | ||
| Disabled ignition system by disconnecting ignition coil or fuel pump fuse (Award 2 marks or zero) | 2 | ||
| Removed all spark plugs using correct tools without damaging threads (Award 3 marks or zero) | 3 | ||
| Checked battery is fully charged or connected to battery charger (Award 2 marks or zero) | 2 | ||
| Sub-Total | 14 | ||
| TASK 2: Compression Testing Procedure | |||
| Connected compression tester adapter securely into first cylinder spark plug hole (Award 3 marks or zero) | 3 | ||
| Cranked engine using starter motor for 5-7 seconds while observing gauge (Award 3 marks or zero) | 3 | ||
| Recorded compression pressure reading in kPa accurately (Award 3 marks or zero) | 3 | ||
| Repeated test for all cylinders following same procedure (Award 1 mark per cylinder tested correctly, total 4 cylinders) | 4 | ||
| Compared recorded compression values with manufacturer’s specifications (Award 3 marks or zero) | 3 | ||
| Identified and reported any cylinders with low or uneven compression (Award 3 marks or zero) | 3 | ||
| Sub-Total | 19 | ||
| TASK 3: Completion and Clean-up | |||
| Reinstalled all spark plugs correctly and tightened to manufacturer’s torque (Award 3 marks or zero) | 3 | ||
| Reconnected ignition system and removed battery charger if used (Award 2 marks or zero) | 2 | ||
| Closed vehicle hood securely (Award 1 mark or zero) | 1 | ||
| Cleaned and stored tools and equipment properly (Award 2 marks or zero) | 2 | ||
| Sub-Total | 8 | ||
| PRODUCT CHECKLIST | |||
| Recorded compression pressures for all cylinders within ±10% of manufacturer’s specification (Award 5 marks if all readings are within tolerance, zero otherwise) | 5 | ||
| No damage to spark plug threads or engine components during testing (Award 3 marks or zero) | 3 | ||
| Compression tester connected and removed without leaks or damage (Award 2 marks or zero) | 2 | ||
| Sub-Total | 10 | ||
| GRAND TOTAL | 51 | ||
Type: Individual
| Tools & Equipment | Materials |
|---|---|
| Multimeter (digital, capable of 20V DC range) | Cleaning cotton waste |
| Battery load tester (capable of 100A load) | |
| Wire brush | |
| Hydrometer for battery fluid test |
| S/N | Item | Quantity |
|---|---|---|
| 1 | Vehicle with operational electrical system | 1 Pc per Candidate |
| 2 | Multimeter (digital, capable of 20V DC range) | 1 Pc per Candidate |
| 3 | Battery load tester (capable of 100A load) | 1 Pc per 2 Candidates |
| 4 | Safety gloves | 1 Pair per Candidate |
| 5 | Safety boots | 1 Pair per Candidate |
| 6 | Overall protective clothing | 1 per Candidate |
| 7 | Cleaning cotton waste | Sufficient per Candidate |
| 8 | Wire brush | 1 Pc per Candidate |
| 9 | Hydrometer for battery fluid test | 1 Pc per 3 Candidates |
| Items to be Evaluated | Marks Available | Marks Obtained | Comments |
|---|---|---|---|
| TASK 1: Conduct Battery Performance Test | |||
| Wore personal protective equipment: overall, safety boots, gloves (Award 1 mark for each PPE worn or zero) | 3 | ||
| Parked vehicle on flat surface and chocked wheels (Award 2 marks or zero) | 2 | ||
| Opened vehicle bonnet safely (Award 1 mark or zero) | 1 | ||
| Checked battery is securely fixed in its case (Award 2 marks or zero) | 2 | ||
| Inspected battery casing visually for cracks, breakages, or leakages (Award 1 mark or zero) | 1 | ||
| Cleaned battery terminals using wire brush and cotton waste (Award 2 marks or zero) | 2 | ||
| Checked battery connections for corrosion and tightness (Award 2 marks or zero) | 2 | ||
| Measured battery voltage using multimeter set to 20V DC (Award 2 marks for correct connection, setting, and reading or zero) | 2 | ||
| Tested battery electrolyte specific gravity using hydrometer (Award 2 marks or zero) | 2 | ||
| Performed battery load test using battery load tester (Award 2 marks for correct application of load and 2 marks for interpreting reading or zero) | 4 | ||
| Listened to alternator for unusual noises while engine running (Award 1 mark or zero) | 1 | ||
| Measured alternator output voltage with no load and full load (Award 2 marks for no load voltage and 2 marks for full load voltage or zero) | 4 | ||
| Checked alternator drive belt for cracks and looseness and adjusted if necessary (Award 2 marks or zero) | 2 | ||
| Cranked engine to check starter motor condition and starting performance (Award 2 marks or zero) | 2 | ||
| Checked fuse box for burnt or loosely connected fuses (Award 2 marks or zero) | 2 | ||
| Inspected wiring harness for loose connections, wire damage, or overheating (Award 2 marks or zero) | 2 | ||
| Checked electrical connectors for secure connections (Award 2 marks or zero) | 2 | ||
| Tested vehicle lighting system operation: headlights, taillights, parking, turn signals, brake lights (Award 2 marks or zero) | 2 | ||
| Sub-Total | 38 | ||
| PRODUCT CHECKLIST | |||
| Recorded battery voltage within manufacturer specifications (12.4V to 12.7V at rest) (Award 2 marks or zero) | 2 | ||
| Battery load test result showing voltage above 9.6V under 100A load (Award 2 marks or zero) | 2 | ||
| Alternator output voltage between 13.8V and 14.5V under load (Award 2 marks or zero) | 2 | ||
| Battery electrolyte specific gravity readings between 1.260 to 1.280, consistent across cells (Award 2 marks or zero) | 2 | ||
| Battery terminals and connections clean and free from corrosion (Award 2 marks or zero) | 2 | ||
| Sub-Total | 10 | ||
| GRAND TOTAL | 48 | ||
At the start of this chapter we promised you would be able to:
Tick each one you can genuinely do.
So, are you there yet?
You're competent when you can confidently do 50% or more of what this chapter promised.
Sign in to record how you're doing.