2008 Kenworth W900 TSBs

MODELS T660, T800, T700, AND W900. *PE

TO ENGAGE AND ENGINE BRAKE WAS NOT ENGAGING. *PE

THERE MAY BE A LACK OF STEERING ASSIST OR HARD STEERING AT IDLE. *RM

THERE HAVE BEEN UPDATES TO THE ENGINE SOFTWARE. *RM

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CHASSIS LISTED MAY HAVE BEEN MANUFACTURED WITHOUT AN UPPER EXHAUST PIPE GASKET. EQUIPPED WITH PACCAR MX ENGINES ONLY. *PE

*KB

UPGRADE ENGINE CONTROL SOFTWARE FOR PACCAR PX 8 AND CUMMINS ISL ENGINES TO ENHANCE PERFORMANCE AND RELIABILITY. *PE

THE KENWORTH AIR INLET PIPE TO THE ISX TURBO MAY BECOME DETACHED. CHASSIS AFFECTED T2000, T800, AND W900. MODEL YEARS UNKNOWN. *PE

ANY MODEL KENWORTH EQUIPPED WITH THE 2007 EMISSIONS COMPLIANT ISX ENGINE AND OPTIONAL DAVCO 382 FUEL FILTER, BUILT PRIOR TO 8/11/08, *PE

AFFECTED: ALL T2000S, T660S, T800S AND W900S CHASSIS BUILT FROM 04/25/08 TO 02/11/08 WITH 2007 ENGINES. *PE

KENWORTH (PACCAR CO): CLEAN GAS INDUCTION (CGI) FLEX PIPE INSPECTIONS. CHASSIS WITH CATERPILLAR 2007 EMISSIONS COMPLIANT ENGINES, C9, C13 OR C15, SHOULD HAVE THE CGI FLEX PIPE INSPECTED FOR DAMAGE. MODEL YEARS UNKNOWN. *PE UPDATED 1/15/09. MODEL T2000, T660, T800 AND W900; YEARS 2005-2008. *PE UPDATED 1/27/09. CSC LETTER WAS RECEIVED. *8PE

appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.

to water intrusion and corrosion in some vehicles.

2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."

LINE FATIGUE FAILURE MAY BE DUE TO EXCESSIVE VIBRATIONS OF HIGH PRESSURE FUEL LINES AND DIESEL FUEL LEAK AND MALFUNCTION INDICATOR LAMP. *PE

EXHAUST SPACER SHORTAGE CAMPAIGN. CHASSIS LISTED MAY HAVE BEEN MANUFACTURED WITHOUT EXHAUST SPACER(S). ONE OR BOTH OF THE SPACERS M80-1021 AND M80-1022 MAY NOT HAVE BEEN INSTALLED. CSC LETTER WAS RECEIVED. *PE

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CHASSIS' ORDERED WITH SYNTHETIC TRANSMISSION FLUID BUT MAY HAVE HAD NON SYNTHETIC FLUID INSTALLED AT THE KENWORTH FACTORY. CSC LETTER WAS RECEIVED. *PE

A NEW STANDARD AXLE LUBE WOULD BE STANDARD INCHASSIS BEGINNING 9/15/08. THE CHASSIS LISTED WERE MANUFACTURED AFTER THAT DATE BUT WITH THE PREVIOUS STANDARD LUBE. MODELS C500, T600, T800 AND W900. CSC LETTER REC'D. *PE

CLEAN GAS INDUCTION (CGI) GASKET CAMPAIGN. CSC LETTER WAS RECEIVED. CHASSIS MODELS AFFECTED T2000, T660,T800 AND W900. MODEL YEARS 2005-08 *PE

Washer pumps may fail to spray due to a clogged filter.

A/C compressor.

VOLUME FOR WORTHWHILE IMPROVEMENT TO EXCEED GOVERNMENT FMVSS 121. MODEL T800, W900. *PE

*RM

ALL C500'S, T300'S, T600'S, T800'S AND W900'S EQUIPPED WITH CURVED GLASS. MODEL YEAR UNKNOWN. *NJ