This paper describes a field trial investigating if a diaphragm spring cover assembly and rigid driven plate would give improved performance over the production coil spring cover assembly and spring centre driven plate. Also described is subsequent rig testing carried out to find an alternative non-asbestos facing. The field trial was successful with a life improvement of 100% together with improved release and engagement characteristics and gear selection. An alternative heavy duty asbestos material was found and a cerametallic material gave the best non-absestos result. Further testing is proposed at a reduced duty level in an effort to improve correlation between rig testing and the field trial and this will be extended to include other non-asbestos materials which have recently become available.

  • Supplemental Notes:
    • Transmissions and Transmission Controls for Off-Highway Equipment SP-549. International Off-Highway Meeting and Exposition Milwaukee, Wisconsin, September 12-15, 1983.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Maycock, I C
  • Publication Date: 1983-9

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00381928
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 831348, HS-036 072
  • Files: HSL, USDOT
  • Created Date: Mar 30 1984 12:00AM