2014 Kenworth T880 TSBs

Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may...

Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to...

An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system...

Eaton ultrashift plus excessive engine over-speed lamp on.

Emissions Campaign The Engine Overspeed lamp may illuminate during a smoke opacity test.

Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine.

Tip for technicians to avoid a conflict with the engine controller when re-programming the transmission

NON-SAFETY CAMPAIGN: REPLACE THE MOLDED AIR INTAKE PIPE, WHICH CAN CRACK AND ALLOW ROAD DEBRIS INTO THE ENGINE.

FIX-AS-FAIL - ENGINE OVER-SPEED LAMP COULD COME ON AFTER A DOWNSHIFT WITH THE EATON ULTRASHIFT PLUS TRANSMISSION.

PRODUCT IMPROVEMENTS AVAILABLE FRONT ENGINE ACCESSORY DRIVE (FEAD) UPDATE - IMPROVE THE LIFE OF AIR CONDITIONING...

Non-Safety Campaign The batteries may drain quickly due to the VECU not going to sleep.

Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the...

Information Only Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead...

Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.

Information Only: The AutoStart System Test does not recognize the hood opening and closing when running the test on a...

Non Safety Campaign: The circuit for the Trailer Hotline/Trailer Power may not be properly protected on Model T680/T880...

Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.

"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes.

Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.

Information: J1939 CAN BUS Best Practices

KENWORTH: TWO RELATED ISSUES CONCERNING MISDIAGNOSE LOW COOLANT CONDITION AND UNNECESSARY COOLANT PUMP REPLACEMENT DUE...

KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.

Troubleshooting procedures for 2.1m cab power windows are now available.

Information Only Windshield washer pumps have a high No Trouble Found rate.

Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.

Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the...

Fix as Fail HVAC system may demonstrate inadequate temperature control, be stuck in defrost mode, or have intermittent...

FIX-AS-FAIL: AN INTERNAL ISSUE MAY CAUSE SOME HVAC MODE DOOR ACTUATORS TO FAIL.

Information only - Customer installed inverters may be wired incorrectly.

NON-SAFETY CAMPAIGN: WATSON & CHALIN LIFT AXLE FRAME BRACKETS WITH SLOTTED LOWER MOUNTING HOLES MAY EXHIBIT CRACKING...

Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.

Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.

Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume...

Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator...

Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer.

Information Only This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke...