Description 62 pages - Caterpillar Scraper 621B (45P2712,36V2514 and Up) Operator's Manual (OPT)Pages : 62 Sections and Models:Manuals > ManualsCaterpillar SCRAPER: 621B (45P2712,36V2514>)Machine Types : ScraperMakes : CaterpillarModels : 621bModels :