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EN-May17-eMag

www.engineeringnews.co.nz 69 EN175 combination rapidly and safely retightens slew ring nuts to the exact and even torque ratings required for ongoing reliability and safety,” says Mr Molloy. All Enerpac professional bolting tools – including S-Series square drive and W-Series low profile hexagon torque wrenches – are precision calibrated and rated for quality, performance traceability across a diverse range of bolting tasks, including joint separation, controlled tightening and joint assembly, ensuring joint integrity across the spectrum of bolting work flow. “The Enerpac gear was ideal for this job, because it provides speed and accuracy as well as traceable bolt loads,” says Mr Molloy. “The large nut rotation per wrench cycle and rapid return stroke of the S-Series makes the job particularly efficient.” Operated by Bishops in-house staff trained to world standards, the pump and wrench combination was also used as required in the refurbishment of the crane’s entire drive train, including transmission, brakes and steering rebuild and fitting of new suspension on the carrier. All hydraulic components have been refurbished, with new hoses throughout. Electronics, electrical and lighting have been upgraded or replaced. The machine has also had a cosmetic refurbishment, being refinished in yellow and grey to match the rest of Bishop’s Liebherr.  PNG technicians trained by Liebherr, John Laho and Miu Hao, have been the driving force behind the task.


EN-May17-eMag
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