Tools, Equipment and Workshop Hand Skills
Core concepts
Candidates must know the correct selection, use, care and inspection of hand tools and workshop equipment. Understand torque wrenches: the difference between click, beam and electronic types, why they must be stored at their lowest setting, and why calibration matters. Know thread types, pitch, and the use of taps, dies and thread repair inserts. Understand fastener grades and markings, the difference between a bolt and a screw, and why stretch bolts are single-use. Know measuring tools such as vernier calipers, micrometers and feeler gauges, plus the correct use of a dial indicator for runout. Cover lifting equipment, presses, bench grinders, hydraulic jacks and their pre-use inspections. Precision and cleanliness separate a competent technician from a careless one.
Traps
Questions often test whether a torque wrench should be used to loosen fasteners (it should not) or whether a micrometer needs zeroing before use (it does). Watch for confusion between diameter and pitch when identifying threads, and between a tap and a die. Another common trap is using an impact gun on a torque-critical fastener.
Worked example
To measure valve clearance with a feeler gauge, ensure the engine is cold if specified, select the blade that slides with slight drag, and record the value in millimetres. If the blade will not fit, step down a size rather than forcing it. Compare against the manufacturer's specification and adjust with the correct shim or rocker screw.
Rule of thumb
A measuring tool is only as good as its calibration and your technique.