BEARING-FRONT IDLER 4I7488 - Caterpillar

Asphalt Paver:
AP-650B (S/N: A7P1-UP; 9DN1-UP)
AP-655C (S/N: CDG1-UP; AYP1-UP)
AP-800C (S/N: 1PM1-UP)
AP-800D (S/N: A5P1-UP)
AP-900B (S/N: AGJ1-UP)
AP-1000B (S/N: 7HN1-UP; AGP1-UP)
AP-1000D (S/N: EAD1-UP)
AP-1050B (S/N: 6ZN1-UP)
AP-1055B (S/N: A3P1-UP; ABB1-UP; 8BM1-UP)
AP-1055D (S/N: FAC1-UP; A6P1-UP)
BG-225C (S/N: B6G1-UP; 5GN1-UP)
BG-2255C (S/N: B9G1-UP; CKR1-UP)
BG-230 (S/N: 9AL1-UP)
BG-230D (S/N: B4G1-UP)
BG-240C (S/N: AGL1-UP)
BG-2455C (S/N: B2G1-UP; ACM1-UP)
BG-2455D (S/N: BNW1-UP; BXW1-UP)
BG-245C (S/N: 4XN1-UP)
BG-260C (S/N: BYG1-UP; 8GN1-UP)
BG-260D (S/N: BPW1-UP)
Service Magazine SEPD00816, 26 December 2005, "A New Topcon® System Five Mechanical Grade Sensor is Now Used on the Asphalt Pavers". Disregard the article. Refer to the following article.Description of Change: The new mechanical grade sensor has the following improvements:
Improved internal latching switch
New operational decals
LED indicatorThe following three colors are used on the LED:
The orange LED indicates that the left side hub position is operating properly.
The green LED indicates that the right side hub position is working properly.
The red LED indicates that the sensor is not operating properly.Adaptable To: The new 284-8876 Position Sensor Gp (Mechanical Grade Sensor) replaces the 223-3840 Grade Sensor Gp .The change is effective with the following Asphalt Pavers:
AP-650B (S/N: A7P216-UP)
AP-655C (S/N: AYP274-UP)
AP-800D (S/N: A5P175-UP)
AP-900B (S/N: AGJ162-UP)
AP-1000D (S/N: EAD106-UP)
AP-1055D (S/N: FAC282-UP; A6P103-UP)
BG-225C (S/N: B6G100-UP)
BG-2255C (S/N: B9G300-UP)
BG-230D (S/N: B4G250-UP)
BG-240C (S/N: AGL302-UP)
BG-2455D (S/N: BNW100-UP; BXW102-UP)
BG-260D (S/N: BPW101-UP)The change is adaptable to the following Asphalt Pavers:
AP-650B (S/N: A7P1-215; 9DN1-UP)
AP-655C (S/N: CDG1-UP; AYP1-273)
AP-800C (S/N: 1PM781-799)
AP-800D (S/N: A5P1-174)
AP-900B (S/N: AGJ1-161)
AP-1000B (S/N: 7HN1-UP; AGP1-UP)
AP-1000D (S/N: EAD1-105)
AP-1050B (S/N: 6ZN1-UP)
AP-1055B (S/N: A3P1-UP; ABB1-UP)
AP-1055D (S/N: FAC1-281; A6P1-102)
BG-225C (S/N: B6G1-99; 5GN1-UP)
BG-2255C (S/N: B9G1-299; CKR1-UP)
BG-230 (S/N: 9AL1-UP)
BG-230D (S/N: B4G1-249)
BG-240C (S/N: AGL1-301)
BG-2455C (S/N: B2G1-UP; ACM1-UP)
BG-2455D (S/N: BNW1-99; BXW1-101)
BG-260C (S/N: BYG1-UP; 8GN1-UP)
BG-260D (S/N: BPW1-100)