2012 International Workstar technical service bulletins
339 technical service bulletins and manufacturer communications cover the 2012 International Workstar.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This article provides guidance to dealership personnel, Technical Services personnel, Dealer Service...
- This article describes how to fix a speedometer that does not read accurately
- New CARB Idle Reduction Change Request
- This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files
- This document provides guidance for assessing the feasibility of implementing a customer-requested change...
- This article is intended to provide information for how to program International Engines that have been...
- Engine replacements for all International engines will need to follow this procedure.
- This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle...
- This document provides: Steps to take when switch pack programming fails, or when switch pack disappears...
- This document will guide the user through understanding Prop Shaft Codes and understanding the variations...
- In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of...
- Title: Service Portal iKNow Feedback Case Types Applies To: All
- Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
- Title: A/C Refrigerant and Oil Capacities Applies To: All current models
- Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
- Title: Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition...
- Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
- Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
- This document reminds technicians of the critical relationship between the truck's suspension and the...
- Applies To: All Navistar Powered Trucks Requesting Engine Emission Label Replacement, Certificate of...
- This article addresses chassis lean conditions on all chassis
- This document details the procedure that must be followed to ensure proper alternator troubleshooting.
- Suggested alignment target values when performing a vehicle axle alignment.
- Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison...
- J1939 Data Link Source Address Information
- Rebuilding Cylinder Heads on Certain MaxxForce 11/13, N13, and A26 engines; 2010 to present.
- Diagnosis of chassis wander complaints.
- General Wheel Speed Sensor Troubleshooting
- How to request a horsepower quote; all International and Cummins engines
- J1939 Data Link Troubleshooting
- Snap-On torque wrench requirement for all big bore engine connecting rod bolts; A26, MaxxForce 13, N13 engines
- New air compressor incorporates an oil feed dowel O-ring
- New Air compressor Incorporates an oil feed dowel O-ring; only models built with MaxxForce 11/13, N13, or...
- Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles...
- Rebuilding cylinder heads on certain EPA 2010 MaxxForce 11/13, N13, and A26 Engines
- Rebuilding Cylinder Heads on Certain International MaxxForce 11/13 engines and all International N13 and...
- J1939 Data link source address information
- Turbocharger oil supply tube retrofit; only models with 2010 emissions MaxxForce 11 and 13 engines and N13...
- Pico Scope CCOS (Crankcase Separator Test)
- PicoScope Test 5V & 12V Intermittent Open and Short circuit diagnostics
- PicoScope Test 12V Electrical Noise Detection
- PicoScope Test
- PicoScope Test for Datalink (CAN) Health Shorts & opens
- PicoScope Test Resistance and Ohmmeter
- PicoScope Wheel Speed Sensor Test
- PicoScope Test One Channel RCT
- Front cab mount bushings/insulators MV, HV, DuraStar, and WorkStar vehicles used in severe vocations
- Cab water leak troubleshooting tips; HX with steel cab only
- Calculating pulses per mile (speedometer setting); only models equipped with International engines
- ECM Calibration for DPF Replacement; Applies to MaxxForce Engines
- High Pressure Fuel Pump external leaks from weep hole
- Dual Drive Cab Throttle Position Harness for APS/IVS throttle pedals; only models with both left hand and...
- Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
- Bendix Stability control
- Engine Oil Capacities
- Oil leaks at the Bottom of the Oil Filter Module; Only International A26, N13, or 2010 and newer 11 and 13...
- Cab water leak troubleshooting tips
- General wheel speed sensor troubleshooting
- Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
- Frame Rail Straightness Inspection Procedure
- Suggested alignment target values when performing a vehicle axle alignment
- A26, N13, and 2010 EPA MaxxForce 11 and 13 engine Auxiliary Programable Parameters
- ECM Calibration for DPF Replacement; only trucks and busses built with 2007- 2009 MaxxForce DT/9/10....
- Cab Lean Concern
- Driveline Information Center and Troubleshooting Procedures
- Repair Procedures for Vehicles Struck by Lightning
- Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
- Cab Odor Service Plan Information; only models equipped with EPA 2010 or later MaxxForce 11 or MaxxForce...
- A/C Refrigerant and Oil Capacities
- Cleaning and Disinfecting Trucks and Buses
- Bendix EC80 Blank Module Replacement Program;
- Power Distribution Center (PDC) Replacement; 7000 (Workstar) Model Series with Allison or Manual Transmissions
- Stand Alone Real Time (SART) Module Diagnostics
- Oil Capacities; All Electronic International Engines 1994
- Suspension Lean Diagnostics; All models
- The First Check to make when Troubleshooting any Body Controller or ESC Issue
- Cab Water Leak Troubleshooting Tips; Excluding 9000i, PayStar(HX), CityStar, or LoadStar
- Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure
- Wind noise at upper side of cab door
- Brake Lights Staying On
- Programing New Key Fobs
- Dual steering gear air bleed procedure
- Vehicle Speed ( VSS ) Output for Bodybuilders
- Air Pressure Gauges and A/C Pressure Transducer Troubleshooting
- FLR-10
- Steering Noise in Vehicles Equipped with Dual Steer
- Tool Instruction
- Engine Oil Capacities All Electronic International Engines 1994
- Radio Diagnostics and Information
- Cummins Programming Guide and Cummins 285 Fault Code; Only pre-2007 models built with Cummins ISM Engine
- Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure;...
- Updating OnCommand Link with Accelerator
- ISX, N13, and N9 / N10 Aftertreatment Private Data Link Troubleshooting
- Winter Front Usage
- Engine Oil Capacities
- OnCommand EZ-Tech
- Using Supplier Software to Check DTCs
- Cracked Windshields on Units Equipped With Feature 595AMP
- Trailer Auxiliary Switch Lamp Burning Out; Only Vehicles Equipped with Feature Code 0008TTH or 0008THG
- NEW Ultrasonic DEF Tank Sending Unit; only models with SCR Aftertreatment system.
- Urea Quality Sensor (UQS) Supplemental Diagnostic and Service Information; only models with SCR...
- HVAC fault 2609-19 with 4th Gen BCM; Only models equipped with 4th generation BCM
- Steering Noise in Vehicles Equipped with Dual Steer; Only models equipped with dual steering gear
- Dealer EZ-Tech and Diagnostic Software Support Resource Center
- CPA Injector Misfire Detection; Only models with 2004 thru 2017 International engines.
- OnCommand EZTech
- Cylinder Performance Analyzer (CPA) Resource Center; Only models with 2004 thru 2017 International engines.
- OnCommand EZ-Tech Download Center
- Steering Shake, Shimmy, Shudder, or Steering Vibration; only with 14k front weight rated axles and below
- Steering Fluids
- Cooling System Flush Procedure
- Repair Information for Damaged Headlight Connector
- J1939 Data Link Troubleshooting; Only Models with 250k Baud Data Link (Black 9 Pin Diagnostic Connector)
- To Get A Helios Capture; All 1939 and 1708 multiplexed trucks only
- Power window binding
- The on board diagnostic (OBD) data stored for purposes of defining required maintenance or repair may be...
- Radiator internal restriction and flush procedure
- Power Window Binding
- Wind noise at upper side door
- Air Conditioning Electrical Diagnostics
- 2010 and Newer Vehicle Air Conditioning Diagnostics (Start Here)
- Adding an Electronic Trailer Brake Controller
- Performing relative compression test and misfire test with cpa tool
- Misfire diagnostics ibb; SPN132(X)
- Davco fuel pro 382 technical manual, installation, diagnostics, and service
- Workstar upper radiator hose update
- Exhaust manifold service procedures
- Service parts damaged new turbocharger oil supply tube
- Power Distribution Center (PDC) Replacement
- Windows Stop Randomly or are Inoperative, Power Door Locks are inoperative
- Engine Won?t Shut Off with the Key 5 amp Fuse Blowing
- Updated Snow Valve Motor and Harness Installation Procedure
- Vibration Troubleshooting
- Change in Seat Belt Manufacturer
- Block Heater Element Hitting the Front Crossmember
- Standard to Heavy Duty Brake Chamber Replacement
- Mirror Repair Procedures and Replacement Parts Availability
- Dash Cluster Lamp Operation, Functions and Regeneration Instructions, With International engines
- Lt EGR
- Front Blower Motor Runs Breifly At Initial Power Up
- A jump start or electrical load dump event could result in an overvoltage condition of the cab Linear...
- Navistar: various types navistar vehicles will be receiving updates on the rear s cam tube/ bracket parts
- Rear S Cam Tube / Bracket part update
- N13, MaxxForce 11, 13 engine Two Cylinder Air Compressor Testing
- This Emissions Recall applies to bus and truck models that were built with 2010, 2011, and 2012 MaxxForce®...
- The engine intake grid heater power feed cable may have been improperly routed resulting in contact with a...
- HVAC faults 520211 and 520465
- Eaton Clutch Information
- DPF Snap Accel Test
- International: information regarding issue with power windows failing to operate properly or power doors...
- Vehicle Air Conditioning Diagnostics (Start Here)
- Air Conditioning Mechanical Pressures Diagnostics
- Dual Fuel Tank Transfer Pump System With Two Wire Pump Troubleshooting; equipped with feature 595192 built...
- Dual Fuel Tank Transfer Pump Troubleshooting on Post-2007 NGV and ProStar
- 04SPL, mcac 476
- Davco Fuel Filter Replacements Recommendation for Maxx Force 11 and 13, 2010 Engines
- Emergency vehicle calibration will reduce the engine exhaust soot levels that enter the aftertreatment...
- TSB contains an owner's notification letter
- Upper radiator Hose update; equipped with feature 0012UAS
- Air pressure gauges and a/c pressure transducer troubleshooting
- 2010 and newer vehicle air conditioning diagnostics (start here)
- Mirror repair procedures and replacement parts availability
- Air conditioning mechanical pressures diagnostics
- Allison transmission rattle with pto
- Cluster Software Update Instructions
- Air Conditioning Control Head Diagnostics
- Air Conditioning Diagnostics
- Radio diagnostics and information
- Temperature radiator diagnostics
- Ik: repair information regarding the missing or loose bolt attaching horton stratis anti rotation bracket...
- Air conditioning electrical diagnostics
- Air conditiong control head diagnostics
- Vehicle air conditioning diagnostics
- Changing truck or trailer lighting, between combined or separate, stop and turn lights
- Combined or separate, turn and stop lights
- Wind noise at upper side door
- Cowl tray seal; only built prior to 11/11/2013
- Remote engine speed control module (RESCM) troubleshooting
- Cluster Issues
- Horton VMaster Ultra (Stratis) Viscous Fan Hub Diagnostics and Troubleshooting Guide
- Horn Sounds On Its Own While Vehicle Parked
- 1939 Data Link Troubleshooting
- Wipers and Aftertreatment Lights Inop on Post 2007 Trucks with Body Controller
- Lubrication to the Intermediate Steering Column Upper U-Joint
- A new calibration has been made available for emergency vehicles that prevents the possibility of engine...
- 2010 Dash Cluster Lamp Operation with new DPF Lamp Locations , Functions and Regeneration Instructions
- New Synthetic Oil for Eaton and Spicer Transmissions; only with Eaton or Spicer transmissions
- Allison Transmission with Auto Neutral Feature Won?t Shift Back into Gear When the Parking Brake is...
- Transmission Upshifting too Fast; Only with Allison Gen 4 LCT (1000 and 2000 series) Transmission
- Allison Transmission Not Pre-selecting with Engine/Exhaust Brake; Only with Allison Transmission
- Transmission Jumping Out of Gear; manual transmission only
- Roll Pins Backing Out of Bell Crank; Only with manual transmission
- Transmission Control Module Relocation; only with Allison WT Gen 3 Transmission
- LUK/Ixetic Power Steering Pump Fittings; only Vehicles equipped with Maxxforce 11, 13 engines
- Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics; Only equipped with Maxxforce 11, 13 engines
- In Chassis Cleaning Procedure for Cooling Package in All Models with MaxxForce 11, 13 Engines
- The S-Cam tube bracket assemblies on steer axles may exhibit fractures between the wing bracket and the...
- Service replacement engines installed in the vehicles involved in this campaign were released from the...
- ZF Sachs Twin XTend clutch; only Vehicles with heavy-duty ZF Sachs Twin XTend Clutch
- Engine Cover Appears to be Scuffed
- Cab Air Suspension Ride Height Measurement and Adjustment
- General Air Brake Plumming Schematic
- Transfer case troubleshooting; Only vehicles equipped with Transfer case
- Navistar: some vehicles are experiencing headlight condensation or frost in the vehicles
- City Horn Blows When Driver Shuts off Truck and Walks Away; only equipped with with ESC or Body Controller
- Retrieving Fault Codes Through the Cluster Doesn?t Work
- Asterisk in Lower Right Quadrant of Dash Display
- Remote Throttle Control Options for Vehicles with ESC?s or Body Controllers and International Engines
- Cab Odor Service Plan Information
- Body Controller/ESC Software Updates
- Water In Fuel (WIF) Message Blinking in Dash Message Center at Key On; only models with International Engines
- How to Change From a 5 Wire Fuel Transfer Pump to a 2 Wire Fuel Transfer Pump
- Dual Fuel Tank Transfer Pump System With Two Wire Pump Troubleshooting; Only models built with Feature...
- Dual Fuel Tank Transfer Pump Troubleshooting
- Extended Cranking Time or Hard Start; only models equipped with D Shaped Fuel Tanks and Davco 382 Fuel...
- HVAC faults 520211 and 520465; only Models with Body Controllers
- Navistar truck: when bellows are bent out of form CAN cause damage to exhaust bellows
- Exhaust Bellows Damage; only models equipped with bellows exhaust pipe.
- Ethylene Glycol Coolant Color Change to be Phased-In Approximately April 1, 2004
- Fan Blade Failures
- Phosphate Conditioner Required When Replacing Radiators; only models with EPA 2009.5, 2009.75 and 2010...
- International: on the aftertreatment support hanger, the horizontal aftertreatment support rod bolt is...
- Horizontal Aftertreatment Mounting Bolt Torque; only models equipped with MF 11/13 engines
- Preventative Maintenance on Horton Stratis Fan Hub Anti Rotation Bracket
- Dash Cluster Stuck in one mode
- Water entry into the cab / Adding Cowl tray seal; models built prior to 11/11/2013
- Engine ECM recalibration prevent possible Diesel Particulate Filter (DPF) overload resulting in frequent...
- Snow Valve Light Staying ON and Motor Running Constantly
- Mirror Repair Procedures and Replacement Parts Availability; only models with Lang Mekra Mirrors
- Certain MaxxForce 13 engines may experience increase in engine RPM while idling (only while vehicle is...
- Power Windows Stop Randomly or are Inoperative, Power Door Locks are inoperative
- Navistar: voluntary emission recall involves recalibration of ECM software to prevent possibility of...
- One piece sunshade mounting bracket becomes loose or comes off the cab; Only models built in Garland or...
- Inspection of Air Control Valve (ACV) Connector / Engine Harness Connection for proper plug orientation...
- Dual Throttle Pedal Harness Troubleshooting; only Models with Dual Throttle Harness and Switch Installed
- Location of 1000 OHM Resistor In the HVAC Wiring
- Deaeration Tank Hose Re-Route Engine Parameter Download Instructions; Only models marked with AFC12917
- Low Temperature Radiator Diagnostics
- Only equipped with Air Brakes
- How to Add Lift Gate Battery Protection; only models equipped with Electronic System Controller (ESC) or...
- Suspension Dump; only models with programming feature 595ACA (Suspension Dump).
- Horton Stratis Fan Hub Diagnostics
- Remote Power Module (RPM) Troubleshooting
- Navistar: some vehicles may have had air control valves connectors installed backwards in empty connector...
- Deaeration Tank Hose Re-Route Engine Parameter Download Instructions
- Meritor Front Brake Return Spring Install
- Adjustment Procedure for Tilt Only Steering Column; only models with Feature code 0005708
- Wiper Troubleshooting
- Troubleshooting & Resetting HVAC Doors; only 2010 and later vehicles with feature code 0016WCT.
- Certain 2010, 2011, and 2012 model year MaxxForce® 11 engines do not meet EPA emissions requirements.
- Transfer case troubleshooting
- Remote Engine Speed Control Module (RESCM) Troubleshooting; Only trucks equipped with RESCM
- Of a new chassis with a frame bow; only chassis equipped with "dogbone" style crossmembers
- Updated Emission Control Information and CARB Clean Idle Label; Only models with MaxxForce 11, 13, 15 engines.
- Navistar: emissions recall on certain trucks that do not meet emissions requirements and need installed an...
- Navistar: some vehicles may have damaged thrust bearings, which may result in damaged to the air compressor
- Dual Drive Cab Throttle Position Harness for Converting Models to both Left and Right Hand Drive
- Dual Throttle Pedal Harness Troubleshooting; only models with Dual Throttle Harness and Switch Installed.
- Ambient Air Temperature (AAT) senor faults; only models with 2010 EPA MaxxForce 11, 13 engines.
- Updating Body Controller Software
- The vehicles involved in this campaign were released from the plants with engines having an incorrect EPA...
- How To Get A Helios Capture; only 1939 and 1708 multiplexed buses and trucks
- Bendix Stability Control -Customer Satisfaction Performance Improvement on specific Emergency/Tanker...
- Body Controller Resource Center
- ECM Recalibration to provide engine protection against an increase in engine RPM while vehicle is idling...
- Headlight Operation and Troubleshooting; only Post 2007 Vehicles Built with a Body Controller
- Navistar: the recalibration of engine electronic control module (ECM) is required to be updated, with...
- Navistar: while idling in park and not moving, engine's RPM would increase and to reduce back pressure...
- FM/AM Radio with No Sound
- The front passenger seat may not conform to Federal Motor Vehicle safety Standard No. 207; only vehicles...
- ECM recalibration to provide engine overspeed protection (only in a parked state or if the vehicle is not...
- Air Control Valve (ACV) Connector with Plugs Installed Backwards in Empty Connector Cavities; Only models...
- Exhaust Gas Recirculation (EGR) Valve Replacement; Only models equipped with MaxxForce 11 or 13 engines
- International: informational procedures for repairing connections for grommet pass through due to water...
- Water leaks through Cab Cowl pass-through connections
- Power Windows randomly stop
- Aftertreatment Resource Center; All models equipped with EPA 2007 and newer engines
- The piston in the spring brake chamber may in certain cases,
- International (navistar): information is being provided regarding the inspection and removal of steering...
- Navistar: on certain maxxforce engines, a repair procedure is provided for cracks during truck operation...
- Navistar: click document search button for owner letter
- Navistar: on certain trucks, the door and window locks fails to operate properly
- Navistar: seat belt components currently installed in some buses and trucks will be replaced by new...
- Navistar: install high-pressure fuel pump for 43 prostar, transtar, and workstar trucks with 2010...
- Navistar: replacing the heater supply pipe
- Navistar: HVAC front inside module drain repair and grease application for exhaust gas recirculation (EGR)...
- Navistar: maxxforce 11, 13, and 15 recalibration to adress frequent warning lights
- Navistar: when making left or right turn, truck turns further to the right than it does when turning to...
- Navistar: have issues on certain truck chassis with bent or side swayed, bowed frames
- Navistar: troubleshooting for intermittent or no front blower operation
- Navistar: engines may have been built with a twisted fuel line which could result in premature wear-out of...
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