Cert III Heavy Commercial Vehicle case studies
Cert III Heavy Commercial Vehicle · Put your knowledge to work in context.
The AUR31120 Certificate III in Heavy Commercial Vehicle Mechanical Technology is an Australian qualification, listed on the National Training Register, that reflects the role of individuals who perform a broad range of tasks on a variety of heavy commercial vehicles in the automotive service and repair sector. It suits people working in, or preparing to work in, heavy vehicle service and repair - diagnosing and repairing braking, steering, suspension, engine, driveline, electrical and emission control systems on trucks, buses and similar vehicles. The Cert III Heavy Commercial Vehicle case studies are 5 cases and about 2,679 words.
1Roadranger Range Change That Won't Split Under Load
A 2019 prime mover with a 13-speed Roadranger manual transmission is in your bay. The driver reports that the range change (high/low) works fine when stationary but will not shift from low to high while climbing a grade loaded at 38 tonnes GCM.
566 words, about 3 min2Allison Automatic Slipping Into Limp Mode on a Delivery Run
A 2020 rigid delivery truck fitted with an Allison 3000 Series automatic is brought in with the dash warning lamp on and the transmission stuck in a default gear (limp home). The driver says it happened twice on the same route, both times after about 40 minutes of stop-start city driving in hot weather (ambient 38°C).
522 words, about 3 min3Clutch Judder After Flywheel Replacement on a Heavy Manual
A 2018 tipper with a heavy-duty manual transmission and a single-plate clutch has just had the flywheel machined and a new clutch kit fitted by your apprentice. The driver returns after 300 km complaining of a violent judder when taking off in first gear, especially loaded.
489 words, about 2 min4Diagnosing a No-Start on a Heavy Vehicle With a Suspect Neutral Switch
A 2017 heavy rigid truck with a manual transmission will not crank. The battery is fully charged (12.7 V at rest, 10.9 V during crank attempt), the starter motor was replaced three months ago, and the ignition switch was replaced last year.
556 words, about 3 min5Elective Choice: Automatic vs Manual for a Stop-Start Refuse Fleet
A regional council is specifying six new refuse collection vehicles. Route profile: 180–220 stop-start cycles per shift, 8-hour shifts, mostly suburban streets with some steep bin-access lanes, and a depot with no transmission specialist on staff.
546 words, about 3 min