NSSCO Motor Mechanics 6189 case studies
NSSCO Motor Mechanics 6189 · Put your knowledge to work in context.
The NSSCO Motor Mechanics syllabus (6189) is the Namibia Senior Secondary Certificate Ordinary Level subject in motor vehicle technology, delivered through the national curriculum framework and assessed with both a written theory paper and practical work. It suits learners who want a recognised school-leaving qualification with a strong technical base, and it also serves as a stepping stone towards vocational training, apprenticeships or employment in workshops, dealerships and fleet operations. The NSSCO Motor Mechanics 6189 case studies are 5 cases and about 5,017 words.
1Draining a Contaminated Fuel Tank: Hazard Ranking and Control
A workshop in Windhoek takes in a sedan whose owner has filled the tank with petrol contaminated by diesel. The supervisor tells Kavezemba, a first-year apprentice, to drain the tank into an open 20-litre bucket and "let it settle".
950 words, about 5 min2Rebore Decision from Bore Measurements and a Caliper Zero Error
The workshop is overhauling a four-cylinder petrol engine with a nominal bore of 80.00 mm. Maximum permissible wear is 0.10 mm, maximum taper 0.05 mm and maximum out-of-round 0.03 mm.
957 words, about 5 min3Overheating Only at Highway Speed Under Load
A 2.5 L turbodiesel pickup with 280 000 km on the clock is booked in with "uses water and the needle climbs". The driver reports it is normal around town, but after about 30 minutes at 100–120 km/h with a 700 kg load the gauge rises above normal, and drops back as soon as he slows down.
1,040 words, about 5 min4Slow Cranking, Low Charging Voltage and a Parasitic Drain
A 1.6 L petrol sedan with a 12 V, 60 Ah battery (three years old) is in for slow cranking on cool mornings and a belt squeal on start-up. The owner's commute is 6 km each way.
990 words, about 5 min5Brake Judder and Pull After a Pad Replacement
A one-tonne light delivery vehicle comes in with steering-wheel shake when braking from 80 km/h and a pull to the left. New front pads were fitted 3 000 km ago, and the customer says the shake started about 1 000 km later.
1,080 words, about 5 min