TANK AS-TOP 9Y1957 - Caterpillar

426, 428 Backhoe LoadersSUPPLEMENT: 08/24/87SERVICE MAGAZINE; JUNE 1, 1987; PAGE 9; "New Backhoe Bucket Tip (Tooth) Retention Pins Have A Groove For Better Retention" on 416, 426, 428 Backhoe Loaders.The last sentence in the article is incorrect. The new 9W7112 Pin is a direct replacement for the former 1U4208 Pin.--------------- END SUPPLEMENT ---------------Description of Change: New pins are used in the backhoe bucket and tip groups on 416, 426 and 428 Backhoe Loaders. The new pins have a groove on one end for the retainer ring. This groove will help prevent the retainer ring from sliding off the end of the pin. This will result in better retention of the bucket tips. The former pin did not have a groove and in some applications the retainer ring would slide off the end. This resulted in loss of bucket tips.
Adaptable To: The new 9W7112 Pin is a direct replacement for the former 1U4208 Pin which is canceled.