2010/08/25 Caterpillar

Motor Grader:

120H (S/N: CAF1-UP; 4MK1-UP; 5FM1-UP; 2AN1-UP; 6YN1-UP; ALZ1-UP; 1241-UP)

120K (S/N: SZN1-UP; JAP1-UP)

12H (S/N: CBK1-UP; 4XM1-UP; 8MN1-UP; 2WR1-UP; 4ER1-UP; AMZ1-UP; 1251-UP)

12K (S/N: JJA1-UP; SZP1-UP)

135H (S/N: CBC1-UP; 8WN1-UP)

140H (S/N: CCA1-UP; XZH1-UP; 2ZK1-UP; APM1-UP; 5HM1-UP; 9TN1-UP; 9ZN1-UP; 1261-UP)

140K (S/N: JPA1-UP; SZL1-UP)

143H (S/N: 1AL1-UP; APN1-UP)

14H (S/N: ASE1-UP; 7WJ1-UP)

160H (S/N: ASD1-UP; 9EJ1-UP; 2FM1-UP; 3GM1-UP; 6WM1-UP; CCP1-UP; 2HS1-UP)

160K (S/N: SZM1-UP; JBP1-UP)

163H (S/N: ARL1-UP)

16H (S/N: 6ZJ1-UP; ATS1-UP)

ReferenceSpecial Instructions, REHS4219, "A New Air Dryer is Available"

The dryer system will prevent moisture from collecting inside the air system for the service brake control group. Debris will be less likely to accumulate on the rubber components that are part of the 8W-5651 Control Valve Gp. The control valve group will not leak, and the service life of the air system will be increased.

For the complete list of material and the correct procedure that is needed in order to install the air dryer group for the above listed machines, refer to Special Instructions, REHS4219, "A New Air Dryer is Available". The special instruction is available through the service information system (SIS) and through the literature distribution system at your local Caterpillar dealer.