2008 Kenworth T660 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

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.

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HIGH VOLTAGE WARNING LIGHT ON THE VOLTMETER. T660S BUILT AND EQUIPPED WITH THE KENWORTH CLEAN POWER SYSTEM SINCE 05/25/07. *PE UPDATED 9/29/09. *PE

A/C compressor.

A RED LIGHT ON SLEEPER CONTROL PANEL WILL ILLUMINATE AS AN INDICATION OF THIS FAULT. *PE

ANY T660 BUILT SINCE 06/25/07, IF EQUIPPED WITH KENWORTH CLEAN POWER SYSTEM. *PE

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

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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

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

OIL FILL SUPPORT BRACKET CAMPAIGN. AN ASSEMBLY PROCESS MAY HAVE RESULTED IN OMITTING AN OIL TUBE SUPPORT BRACKET. ORIGINAL PUBLICATION 6/11/2008. CSC WAS RECEIVED. *PE

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."

ANY T660S EQUIPPED WITH FULL CHASSIS FAIRINGS. NO MODEL YEARS LISTED. *PE

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

THE HOOD LATCH MAGNET MAY NOT BE STRONG ENOUGH TO HOLD THE LATCH IN RELEASE POSITION. *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

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BEADS OF MOISTURE OR POOLING WATER VISIBLE THROUGH THE HEADLIGHT LENSES. INSPECT FOR MISSING HEADLIGHT VENT AND/OR ROCK SHIELD AND REPAIR AS NECESSARY. *PE