SEAT GP 4723122 - Caterpillar

623B, 627B, 627B (PP),
631D, 633D, 637D, 637D (PP) TractorsReference: "New Swing-Out Windshield" on Pages 4 and 5 of April 17, 1978 Service Magazine.Several changes have been made which have an effect on the parts and procedures used to install the swing-out windshield on the above tractor models: ... The existing air vents are no longer removed to install the new windshield, so the fabricated plate (Item 1 in the parts chart and illustrations) is not needed. Delete (cancel) references to the air vents in the third paragraph of "DESCRIPTION OF CHANGE" and the "INSTALLATION" paragraph, and delete the first two lines (Item 1) from the parts chart.... A new 7D4533 Grab Iron is used in place of one of the 7D5042 Grab Irons (Item 2 in the parts chart). Change the quantity for 7D5042 Grab Iron from 2 to 1, and add one 7D4533 Grab Iron opposite Item 2.... A 6G2959 Handle is now used in place of the former 2G9273 Handle (Item 7 in the parts chart), which is canceled. Change the part number for Item 7 in the chart.... Change the part number for Item 9 in the parts chart from 2B9265 Bracket to 2G9265 Bracket. This was an error in the original chart.... Remove the (*) and (**) references from the parts chart opposite Items 1 and 2, and cancel the (*) and (**) footnotes below the chart.... Change the identification of the last footnote below the chart from three dots to two dots....Use the revision of the Special Instruction, Form SMHS7171-01, for conversion of earlier machines. This revision gives complete information for installation of the later parts.