Kenworth T600 — Fuel System
High risk
Sep 25, 2018
Model years: 2017, 2018, 2019
On certain trucks built with a Cummins X15 or ISX15 engine equipped with nylon fuel lines and a banjo bolt on the fuel pump, a blockage in the fuel cooling system may cause a fuel
Also affects: Peterbilt 579, Kenworth T680, Peterbilt 587, Peterbilt 389, Kenworth T660
Kenworth T600 — Powertrain
High risk
Aug 21, 2012
Model years: 2013
On certain trucks, the driveshaft attachment bolts may not have received adequate tightening torque during vehicle assembly. Should the fasteners loosen and fall out, a driveshaft
Also affects: Kenworth T400, Kenworth T700, Kenworth T800, Kenworth W900
Kenworth T600 — Engine
High risk
Mar 24, 2011
Model years: 2007, 2008, 2009, 2010, 2011
On certain trucks equipped with a Caterpillar C15 diesel engine, the Diesel Particulate Filter (DPF) combustion tube may fail. This could result in a vehicle fire causing property
Also affects: Kenworth T2000, Kenworth T800, Kenworth W900, Kenworth C500, Kenworth T660
Kenworth T600 — Powertrain
High risk
Dec 13, 2010
Model years: 2007, 2008
On certain vehicles, the bearing surfaces of the extended lube universal joint that attaches the inter-axle driveline to the drive axle may become prematurely worn due to breakdown
Also affects: Kenworth T660, Kenworth T800, Peterbilt 386, Peterbilt 388, Peterbilt 385
Kenworth T600 — Brakes
High risk
Oct 29, 2009
Model years: 2004, 2005, 2006, 2007, 2008, 2009
Certain vehicles may suffer cracking of various brake assembly components (i.e. brake cam tube mounting flanges, brake air chamber bracket, brake air chamber, brake spider). Over t
Also affects: Kenworth T660, Kenworth W900, Kenworth T800, Kenworth T2000
Kenworth T600 — Engine
High risk
Aug 19, 2009
Model years: 2004, 2005, 2006, 2007, 2008
On certain vehicles equipped with a Caterpillar C15 engine, the Variable Valve Actuation (VVA) oil line may wear against the P-clip retaining the oil line. An oil leak could result
Also affects: Kenworth C500, Kenworth T2000, Kenworth T800, Kenworth W900, Peterbilt 357
Kenworth T600 — Suspension
High risk
Oct 1, 2008
Model years: 2004, 2005, 2006, 2007, 2008, 2009
Certain vehicle configuration which includes an AG400 rear suspension, long stroke brake chambers, and wide base tires may develop an increase in lateral and vertical axle movement
Also affects: Kenworth T660, Kenworth Tc2000, Kenworth W900, Kenworth T800
Kenworth T600 — Other
High risk
Sep 24, 2008
Model years: 2006, 2007, 2008, 2009
On certain trucks, the inadequate stiffness of the Diesel Particulate Filter (DPF) bracket could result in the separation of the DPF from the chassis, which could result in persona
Also affects: Kenworth T2000, Kenworth T660, Kenworth T800, Kenworth W900, Peterbilt 365
Kenworth T600 — Suspension
High risk
Jul 11, 2008
Model years: 2009
On certain trucks, the rear axle u-bolts may have received insufficient tightening torque during vehicle assembly. This could allow the u-bolts to loosen over time, which may cause
Also affects: Kenworth T2000, Kenworth T660, Kenworth T800, Kenworth W900
Kenworth T600 — Lights And Instruments
High risk
Apr 28, 2008
Model years: 2007
On certain vehicles, the trailer cable mounting bracket has a "U-shaped" cut-out that only partially supports the trailer cable connection. This may allow the moulded boot and elec
Also affects: Kenworth C500, Kenworth T2000, Kenworth T800, Kenworth W900
Kenworth T600 — Brakes
High risk
Jan 7, 2008
Model years: 2008
Certain vehicles fail to comply with requirements of CMVSS 121 - Air Brake System. The air lines were incorrectly constructed with only four layers of extruded nylon material, inst
Also affects: Kenworth T800, Peterbilt 320, Kenworth 953, Kenworth K500, Peterbilt 325
Kenworth T600 — Other
High risk
Jun 21, 2007
Model years: 2005, 2006, 2007, 2008
On certain trucks, the removable front tow hitch assembly may fail. This could result in personal injury or property damage if the assembly failed during the un-decking or towing o
Also affects: Kenworth T2000, Kenworth T660, Kenworth T800, Peterbilt 385, Peterbilt 386
Kenworth T600 — Engine
High risk
Jun 20, 2007
Model years: 2005, 2006, 2007
On certain trucks equipped with Caterpillar C11, C13 and C15 engines, the oil fill cap can become dislodged due to cap damage or improper installation. The cap can become lodged in
Also affects: Kenworth T2000, Kenworth T800
Kenworth T600 — Fuel System
High risk
May 8, 2007
Model years: 2007, 2008
On certain trucks, when the ignition key is in the 'ON' position, the pre-heater, located in the fuel filter base, is energized. If this pre-heater is energized while maintenance i
Also affects: Kenworth T800, Kenworth W900, Peterbilt 365, Peterbilt 367, Peterbilt 379
Kenworth T600 — Other
High risk
Mar 20, 2007
Model years: 2007, 2008
On certain trucks, the axle housing may have been manufactured with steel that was out of specification (9.5mm thick instead of 11mm thick), which could result in a fatigue failure
Also affects: Kenworth T800, Peterbilt 385, Peterbilt 379, Peterbilt 357, Peterbilt 378
Kenworth T600 — Electrical
High risk
Mar 15, 2007
Model years: 2007, 2008
On certain trucks, the trailer light wiring harness may have been routed incorrectly during vehicle assembly. This could cause the wires within the harness plug to be pulled away f
Also affects: Kenworth T300, Kenworth T800
Kenworth T600 — Steering
High risk
Nov 17, 2006
Model years: 2007, 2008
On certain trucks, the tilt locking mechanism on the steering column may disengage, preventing the steering column from locking into predetermined positions. Should the locking mec
Also affects: Kenworth T800, Kenworth W900
Kenworth T600 — Engine
High risk
Dec 22, 2005
Model years: 2004, 2005, 2006
On certain vehicles equipped with a Caterpillar engine, the Variable Valve Actuation oil line (VVA line) used on 6 cylinder, 15L turbocharged and air-to-air aftercooled diesel engi
Also affects: Kenworth C500, Kenworth T800, Kenworth W900, Peterbilt 357, Peterbilt 378
Kenworth T600 — Other
High risk
Nov 24, 2005
Model years: 2005, 2006
On certain vehicles, the steering shaft sensor of the Electronic Stability Program (ESP) may be misaligned, giving incorrect vehicle information to the Electronic Control Unit (ECU
Also affects: Kenworth T800, Peterbilt 387
Kenworth T600 — Suspension
High risk
May 20, 2005
Model years: 2005, 2006
On certain vehicles, the rear suspension sway bar could fail causing the rear axle to come loose. As a result, the driver may experience a loss of vehicle control which could cause
Also affects: Kenworth C500, Kenworth T2000, Kenworth T800, Kenworth W900
Kenworth T600 — Suspension
High risk
Apr 29, 2005
Model years: 2004, 2005
On certain vehicles, the rear suspension transverse beam castings were not made to specifications. If a casting were to break when the vehicle is in motion, parts could become proj
Also affects: Kenworth C500, Kenworth T2000, Kenworth T800, Kenworth W900, Peterbilt 357
Kenworth T600 — Heater And Defroster
High risk
Mar 24, 2005
Model years: 2003, 2004, 2005
On certain vehicles, burner tubes in the Webasto DBW 2010 Scholastic coolant heater may begin deteriorating at an accelerated rate and could fail. Burner tube failure could result
Also affects: Kenworth C500, Kenworth T800, Kenworth W900
Kenworth T600 — Electrical
High risk
Dec 10, 2004
Model years: 2005
On certain vehicles, the terminals on the Power Feed Harness P92-1993 were not properly crimped. The defect could lead to intermittent power loss affecting the electrical system an
Also affects: Kenworth C500, Kenworth K100, Kenworth T2000, Kenworth T300, Kenworth T800
Kenworth T600 — Structure
High risk
Oct 25, 2004
Model years: 2004
On certain vehicles, the huck bolts used in the cab sub-assembly involving the door aperture and rear cab pillar was not properly installed. Under extreme loading conditions which
Also affects: Kenworth T800, Kenworth W900
Kenworth T600 — Powertrain
High risk
Sep 14, 2004
Model years: 2004
On certain vehicles, the U-joint fasteners at the output yoke of the transmission were not properly torqued during assembly. If the U-joints were to become loose, a portion of the
Also affects: Kenworth T800, Kenworth W900
Kenworth T600 — Electrical
High risk
Jul 21, 2004
Model years: 2003, 2004
On certain vehicles, a potential chaffing point may exist between a heat shield on the engine and the wiring for the alternator. The interference is only present with the combinati
Also affects: Kenworth T800, Kenworth W900
Kenworth T600 — Label
High risk
Jul 15, 2004
Model years: 2004
Certain vehicles do not comply with the requirements of CMVSS 120. The vehicle tire pressure was omitted from the certification label. Correction: Dealers will install correct labe
Also affects: Kenworth K100, Kenworth T2000, Kenworth T800, Kenworth W900
Kenworth T600 — Electrical
High risk
Aug 5, 2003
Model years: 2002, 2003
On certain vehicles, the optional battery-mounted 50 amp and/or 60 amp circuit breaker had been wired incorrectly. If enough accessories are being used simultaneously during operat
Also affects: Kenworth T800, Kenworth W900
Kenworth T600 — Other
High risk
Jul 2, 2003
Model years: 2002, 2003
On certain vehicles, the grabhandles were mounted too high and may limit the ability to maintain 3-points of contact at all times. This condition may cause a person to slip and/or
Also affects: Kenworth T2000, Kenworth T800, Kenworth W900
Kenworth T600 — Other
High risk
May 5, 2003
Model years: 2001, 2002, 2003
On certain vehicles, fatigue cracks can initiate in the weld joining the bracket pin to its mounting flange on the fifth wheel assembly. Weld failures could lead to the loss of the
Also affects: Kenworth T2000, Kenworth T300, Kenworth T800, Kenworth W900, Peterbilt 357
Kenworth T600 — Lights And Instruments
High risk
Feb 13, 2003
Model years: 2002, 2003
On certain vehicles a rubber grommet from the trailer light line connector is missing. Kenworth chassis equipped with trailer connections are experiencing corrosion at the 7-way tr
Also affects: Kenworth C500, Kenworth K100e, Kenworth T2000, Kenworth T300, Kenworth T800
Kenworth T600 — Brakes
High risk
Sep 11, 2002
Model years: 2002
On certain vehicles, the delivery port inside Bendix trailer hand control brake valves may be partially blocked due to a problem during the molding process. Such a blockage may slo
Also affects: Peterbilt 330, Peterbilt 378, Kenworth T300, Kenworth W900, Peterbilt 379
Kenworth T600 — Engine
High risk
Nov 16, 2001
Model years: 2002
Certain heavy duty trucks. The driveline u-joint fasteners at the output yoke of the transmission were improperly tightened. Under-tightened fasteners can lead to the driveline bec
Also affects: Kenworth T2000, Kenworth T800, Kenworth W900
Kenworth T600 — Other
High risk
Sep 10, 2001
Model years: 2001
Certain heavy duty trucks built between March 5, 2001 and June 4, 2001. Fail to comply with the requirements of C.M. V. S.S. 103, "windshield defrosting and defogging systems." the
Also affects: Kenworth C500, Kenworth T800, Kenworth W900
Kenworth T600 — Steering
High risk
Aug 27, 2001
Model years: 2000, 2001
Certain heavy duty trucks equipped with TRW tie rod ends on certain meritor axles. The tie rod and drag link ball stud ends contain bearings that are below the specified case depth
Also affects: Kenworth T300, Kenworth T2000, Kenworth C500, Kenworth T800, Kenworth W900
Kenworth T600 — Steering
High risk
May 17, 2001
Model years: 1999
Certain vehicles equipped with TRW brand tie rod model number 24-DL. The tie rod ball-socket bearings have a below specification case depth and/or hardness, which can lead to prema
Also affects: Kenworth C500, Kenworth K100, Kenworth T2000, Kenworth T300, Kenworth T800
Kenworth T600 — Suspension
High risk
May 16, 2001
Model years: 1996, 1997, 1998, 1999, 2000, 2001
On certain vehicles, the rear suspension is regularly subjected to extreme articulation, resulting in flexing of the joint. Failure of the lower sway arm attaching bolts could resu
Also affects: Kenworth T800, Kenworth W900, Kenworth T2000, Kenworth K100, Kenworth C500
Kenworth T600 — Electrical
High risk
Feb 8, 2001
Model years: 1999, 2000, 2001
On certain vehicles, the main cab power and battery leads were attached incorrectly to the same side of the 135A circuit breaker when this circuit breaker was mounted in the option
Also affects: Kenworth C500, Kenworth T800, Kenworth W900
Kenworth T600 — Steering
High risk
Jan 11, 2000
Model years: 1999
On certain vehicles, the drivelines may exceed the 35 degrees in the U-joint angle. This creates the potential of the U-joint contacting the aluminum steering driveline. This conta
Also affects: Kenworth T300, Kenworth T800
Kenworth T600 — Suspension
High risk
Aug 19, 1997
Model years: 1995, 1996, 1997
NOTE: VEHICLES EQUIPPED WITH AIRGLIDE 200 REAR SUSPENSION. DUE TO THE MATERIALS USED IN THE SWAY BAR ARMS AND THE STUDS AS WELL AS THE STUD PLATING, A COMBINATION OF STRESS CORROSI
Also affects: Kenworth T2000, Kenworth T400, Kenworth T800, Kenworth W900
Kenworth T600 — Lights And Instruments
High risk
Apr 10, 1996
Model years: 1996
NOTE: VEHICLES EQUIPPED WITH FEDERAL MOGUL SIGNAL-STAT TURN SIGNAL SWITCHES. THE WIRES THAT CORRESPOND TO THE VEHICLE'S REAR TURN SIGNALS MAY HAVE BEEN REVERSED WHEN INSTALLED IN T
Also affects: Kenworth C500, Kenworth K100, Kenworth T400, Kenworth T800, Kenworth W900
Kenworth T600 — Engine
High risk
May 2, 1991
Model years: 1990, 1991
THE ENGINE FAN SUPPLIED BE FLEX-A-LITE CONSOLIDATED MAY EXPERIENCE A RESONANT FREQUENCY CAUSING FAN FAILURE. THIS COULD RESULT IN INJURY OR DEATH TO ANY PERSON IN THE VICINITY OF T
Also affects: Kenworth W900b, Kenworth W900l
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