CAT part number B1006785, dated 2-2012. The item "CAT CATERPILLAR MD6420 ROTARY BLASTHOLE DRILL Service Repair Manual book crawler" is in sale since Friday, March 1, 2019. This item is in the category "Industrial\Heavy Machinery, Parts & Attachments\Heavy Machinery\Other Heavy Machinery". The seller is "oem_cat_manuals" and is located in Portland, Oregon. This item can be shipped worldwide.