RECENT DEVELOPMENTS IN SETTING COMPONENT AND VEHICLE REPLACEMENT TIMES

Statistical techniques are used to predict optimum replacement times. Failure statistics of water pumps are used as an example to obtain a Weibull lifetime distribution. Given these failure characteristics and the ratio of the cost of a failure to that of a preventative replacement, the best replacement time can be calculated using either well developed mathematical models, a graphical solution developed by Glasser or a standard computer package. There is often considerable uncertainty associated with data used to calculate vehicle economic life, but methods of checking the importance of various features are illustrated. The author suggests an alternative to the economic life approach which allows early disposal of a 'bad' vehicle and retention of a 'good' one. The method, annual maintenance cost limit, enables this decision to be made. A computer package is available to identify the maximum amount that can be economically justified in keeping a vehicle on the road for a further year. /TRRL/

  • Availability:
  • Corporate Authors:

    Embankment Press Limited

    Building 59, GEC Estate, East Lane
    Wembley, Middlesex HA9 7TQ,   England 

    Embankment Press Limited

    Building 59, GEC Estate, East Lane
    Wembley, Middlesex HA9 7TQ,   England 
  • Authors:
    • JARDINE, AKS
  • Publication Date: 1977-5

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 7-8
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00163958
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Dec 8 1977 12:00AM