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Focus: Maintenance In this comprehensive maintenance course, students can learn where supernuts are applied in a reciprocating compressor, what advantages they have over standard hex nuts, where to find the proper torque values and jackbolt lubricant, and how to properly tighten and loosen the supernuts in both crosshead and piston nut applications. Challenging interactivities and review questions will increase the student’s retention of the complex procedures and sequential patterns that Dresser-Rand recommends to accurately tighten these fasteners while maintaining piston rod and crosshead alignment.
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