CYLINDER ASSEM. (Right Hand) 6J6889 - Caterpillar

Asphalt Paver:
AP-1000D (S/N: EAD1-UP)
AP-1055D (S/N: FAC1-UP)
BG-2255C (S/N: CKR1-UP)
BG-2455D (S/N: BXW1-UP)
BG-260D (S/N: BPW1-UP)
AP-1000B (S/N: 7HN351-UP; AGP1-UP)
AP-1055B (S/N: ABB525-UP; A3P1-UP)
AP-655C (S/N: CDG251-UP; AYP1-UP)
AP655D (S/N: GNN1-UP; GNZ1-UP)
BG-2455C (S/N: B2G1-UP; ACM284-UP)
BG-260C (S/N: BYG1-UP; 8GN583-UP)
Service Magazine SEPD0946, 23 June 2008, " A New Planetary Group is Now Used on the Asphalt Pavers". Disregard this article. See the article that follows.Description of Change: The seal rings for the brake piston have been increased from 2.62 mm (.103 inch) diameter of the cross section to 2.88 mm (.113 inch) diameter of the cross section. The larger diameter of the cross section of the seal rings for the brake piston will improve the compression of the seal.The diameter of the bottom groove of the seal groove on the piston for the shifter has been increased in order to improve compression of the seal.An improved Duo-cone seal gp with an improved sealing surface finish and improved loading of the seal face is now used.Adaptable To: The new 325-4687 Final Drive Planetary Gp replaces the 190-6345 Final Drive Planetary Gp, 272-7275 Final Drive Planetary Gp, and 321-9805 Final Drive Planetary Gp on the AP-1000B and the AP-1000D Asphalt Pavers.The new 325-4689 Final Drive Planetary Gp replaces the 256-9597 Final Drive Planetary Gp, 272-7288 Final Drive Planetary Gp, and 321-9807 Final Drive Planetary Gp on the following Asphalt Pavers: AP-655C, AP-655D and AP-1055D.A new brake seal kit which contains the improved seal rings for the brake piston has also been released for service. The 322-3988 Seal Kit replaces the 240-5322 Seal Kit. The 322-3988 Seal Kit is