CAT Caterpillar 631 Scraper Parts Manual Book 56F1 56F568 Form UE034064 1967 OEM
Caterpillar 631 Scraper. Serial numbers 56F1 to 56F568. Form UE034064. Published July 1967. Caterpillar Tractor Co. Peoria, Illinois, USA. Inside pages are mostly clean and very much usable.