Original Date: 11/13/1995
Revision Date: 01/18/2007
Information : Reliability Program
JLG applies reliability techniques borrowed from the aerospace and automotive industry to enhance design improvements at the most effective period in the product's life cycle. Using these techniques, JLG evaluates the design from the customer's point of view and provides suppliers with early feedback regarding component performance. JLG tracks the mean time between failure of products, performs a failure mode effect criticality analysis (FMECA) of all designs, uses a failure reporting and corrective action system, tracks utilization (equivalent to operational availability), maintains quality costs, and has a reliability integrated design program.
FMECA is performed during the concept phase to evaluate a proposed design. A design FMECA is then used to evaluate the design, and a process FMECA helps evaluate manufacturing flow. The failure reporting and corrective action program was implemented to provide design inputs during the feasibility and design phases. Statistical analysis and reporting is also applied to evaluate machine reliability and quality. Preliminary testability results based on customer usage is provided through the failure reporting and corrective action program.
While failure analysis is performed in-house, independent evaluation is performed during all phases. The cost of quality evaluation uses warranty and customer return information to evaluate the product life cycle costs. A repair parts usage and machine performance tracking system facilitates evaluation of the life cycle consumption. Failure analysis is performed on current products. The utilization program monitors product use to determine availability and reliability. The reliability integrated design includes a proactive working relationship with suppliers and distributors. Reliability management is performed on new components, long lead items, and others. Reliability allocation and early assessments identify any potential issues. In-house, field, and laboratory testing is performed during the various stages to ensure product capability.
This reliability program at JLG has resulted in enhanced product designs and satisfied customers. The designs also are less costly to produce.
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