2011 Kenworth T470 TSBs
20 Technical Service Bulletins across 11 categories
Categories
Electrical
6 bulletinsInformation Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the...
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appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
Information Only Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead...
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to water intrusion and corrosion in some vehicles.
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
KENWORTH: DIAGNOSTICS INDICATE FAILED FUEL LEVEL SENSOR FUNCTION IN REPAIRS AND BEFORE COMPONENT IS REPLACED, DIAL...
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FACE SHOULD BE CLEANED AND FAILURE VERIFIED. ALL KENWORTH MODELS WITH OHM DIAL OR OPEN CARD STYLE FUEL SENDERS. *PE
PACCAR: WATER MAY SEEP BETWEEN THE WIRE INSULATION AND POTTING OF THE FUEL SENSOR.
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THERE MAY BE AN ERRATIC FALSE WARNING OF WATER IN FUEL. *RM
PACCAR: THERE ARE COOLING MODULES THAT MAY HAVE A LOOSE CONNECTION AT THE CHARGE AIR COOLER MOUNTING.
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*RM
Other
3 bulletins"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes.
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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."
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.
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THE FRONT AXLE U BOLTS WERE MANUFACTURED ON CERTAIN T3 AND T4 SERIES TRUCKS WITH INSUFFICIENT TORQUE. *PE
PACCAR: TWO REAR CAB FASTENERS MAY NOT HAVE THE PROPER TORQUE.
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*RM
Body & Paint
2 bulletinsInformation Only Windshield washer pumps have a high No Trouble Found rate.
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Washer pumps may fail to spray due to a clogged filter.
KENWORTH: INFORMATION REGARDING TRUCKS RECEIVING NEWLY INSTALLED LATCHES TO HOLD DOWN HOOD, REPLACING PREVIOUS DESIGN LATCH.
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*PE
Transmission
2 bulletinsKENWORTH: ON CERTAIN TRUCKS, THE EATON TRANSMISSIONS MAY BE SUSCEPTIBLE TO HAVING WATER INTRUSION WHICH CAN CAUSE THE ECU TO STOP WORKING.
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LOSS OF COMMUNICATION AND PRIMARY FUNCTION MAY REQUIRE REPLACEMENT OF THE ECU'S FAILURE MODE. *PE
PACCAR: INFORMATION ON PREMATURE FAN CLUTCH LINING WEAR.
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*RM
Brakes
1 bulletinCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume...
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requirements per FMVSS/CMVSS 121 Air Brake Systems. This bulletin will be updated when repair parts and procedures are available.
Software & Calibration
1 bulletinInformation Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer.
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The issue can be temporarily resolved using any one of the included procedures.
HVAC & Climate
1 bulletinInformation Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the...
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A/C compressor.
Pre-Delivery & Maintenance
1 bulletinInformation Only This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke...
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Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
Engine
1 bulletinKENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.
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ERRONEOUS FAULT CODES MAY DEVELOP IN CHASSIS OR CHECK ENGINE WARNING LIGHT RELATED TO NOX EMISSIONS MEASUREMENT AND AFTERTREATMENT IF IMPROVEMENT FOR THE RECALIBRATION OF ENGINE CONTROL MODULE (ECM) IS LEFT UNCORRECTED. *PE
Fuel System
1 bulletinKENWORTH: INFORMATION REGARDING ORIGINAL EQUIPMENT FITTINGS NOT MATING PERFECTLY AND RESULT IN LEAKS AND/OR AIR...
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INGESTION DUE TO THE 37 DEGREE FITTINGS FLARED FUEL LINE TO FUEL FILTER FITTINGS INSTEAD OF THE 45 DEGREE. *PE
Suspension
1 bulletinPACCAR: INFORMATION ON FAN HUB BEARINGS INSPECTION AND WARRANTY EXTENSION DUE TO A HIGHER THAN NORMAL FAILURE RATE.
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*RM