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...Document resume ed ce title tractor hydraulics a teaching reference institution american association for vocational instructional materials athens ga farm and industrial equipment inst chicago ill report no vt note p illustrations have color keying which will not reproduce edrs price mf hc plus postage descriptors agricultural machinery fluid power education manuals mechanics tractors trade abstract the manual was developed to help provide better understanding of how why hydraulic principles serve purposes weight reduction increase physical effort more precise control machines all types four components that are necessary workable system reservoir pump valve motor cylinder described in detail special emphasis is given applications va documents acquired by eric include many informal unpublished available from other sources makes every obtain best copy nevertheless items marginal reproducibility often encountered this affects quality microfiche hardcopy reproductions via reproduction serv...