2019 Western Star 4900 TSBs
292 Technical Service Bulletins across 16 categories
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59 bulletinsCX Advocate for NOx conversion low faults
CX Advocate for NOx conversion low faults
CX Advocate for NOx conversion low faults
CX Advocate for GATS2.4 being expanding to DD15
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the...
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Clean Truck Check.
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the...
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Clean Truck Check.
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the...
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Clean Truck Check.
CX Advocate communication for NOx conversion low faults
Customer letter regarding variable speed water pump.
Customer Advisory Letter on ATD Inlet Pipe Bellows Assembly
Tech Talk discussion on GHG17 WST 4900 Neutral Switch Not Valid.
Tech Talk discussion on repair verification for codes like 'low air flow' when a trailer is not available.
Tool Letter for ICC5 Programming Cable
Tool Letter for New Final Drive Pinion Cover Install Tool
Tool Letter for New Tool Kit Replacement Components DDE DKICHA018006 Components 1, 2 and 3
PowerNet Assessment Tool Repair Procedure
Dealer Bulletin- FL766 Western Star Power Cable Studs
Technical Publications Ordering
Dealer Bulletin- FL766 Western Star Power Cable Studs
Vibration and Harsh ride Troubleshooting
Operating Hours for the Customer Assistance Center
0508-18 Aftertreatment
ICI18-016 FL756 ? Automotive Connector Terminal Removal Tool
FL766 Western Star Power Cable Studs
0508-18 Aftertreatment
The automatic connector terminal removal tool is part of tool kit DDE KI0CHA17001.
sbw2018 Western Star 4800 and 4900 Radiator Mounting
sbw0001Validity List Western Star
711-13 SPN 100-FMI 4 - ALL YEARS
717-13 Oil Pan
sbw5455 Virtual Technician Retrofit
sbw5455 Virtual Technician Retrofit
ICI12-024-DLR SF453 - Termination Date Extended
sbw3109 Huck-Spin 2 Changeover
sbw5463 Nexiq USB-Link Upgrade and Diagnostic Connector
sbw4911 DEF Gauge Reading Incorrectly
Magnetized Fill Neck for Six-Gallon DEF Tanks
12-022-DLR Daimler Trucks Remarketing Corporation (DTR) Now Requires Pre-approval for Repairs $1,200 (USD) and Greater
15TS3 Detroit? Coolant Change From Nitrite Organic Acid Technology
15CSA10 The Detroit CSC announcing a new feature ? Ability to attach files to an existing CSC
15CSA9 Release of DiagnosticLink 8.02
sbw2023 Modine Copper/Brass Bolted Downflow Radiator Rebuilding
15-009_Detroit_New_SDTs
15TL5 DAVCO Shop Pro FXP 95
15CSA4 Holiday Schedule for the Detroit Customer Support Center
15-009 New Detroit Standard Diagnostic Times
713-14 Symptom Diagnostics - Combustion Gas in Coolant
715-14 Symptom Diagnostics - Coolant Los
719-14 SPN 84 (CPC) (GHG14)
710-14 SPN 96 (CPC) (GHG14)
711-14 SPN 107 (CPC) (GHG14
701-14 SPN 168 FMI 0 and 1 (IPPC)(GHG14
706-14 SPN 171 FMI 3, 4 (CPC)(GHG14)
709-14 SPN 3216 (MCM) (GHG14)
703-14 SPN 3556 (ACM) (EPA10)
716-14 SPN 4077 (MCM)(EPA07 EPA10;GHG14
704-14 SPN 520200 FMI 6 (IPPC)(GHG14)
705-14 SPN 520203 FMI 6 (IPPC)(GHG14)
707-14 SPN 520229 FMI 3 (IPPC) (GHG14
Pre-Delivery & Maintenance
50 bulletinsTechnical Service Bulletin for StarNet Manuals Moving to Technical Literature
Important Campaign Information letter for DDC D23M3 - Campaign Reactivated and Extended.
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Field Service Campaign D23M3 - GHG17 DETROITTM DD16 Vibration Damper Replacement has been extended for an additional 6 months.
Technical Service Bulletin for New Final Drive Over Heat Diagnostic
Important Campaign Information letter for FL974 - Revised Bulletin & Population
Western Star Service Bulletin for DEF Connector Reinforcement Caps
Western Star Service Bulletin for Key Fob ID Retention.
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Key fobs for remote keyless entry on Western Star vehicles are delivered in packages that include a unique ID for the fob. The ID is required when pairing the key fob with a vehicle.
Revised Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance.
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In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes. Revisions are in blue font.
Technical Service Letter for Detroit Bearing Failures - Standard Diagnostic Times.
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DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.
Technical Service Letter for SPN 3711 FMI 31 on GHG17 DD15 Trucks.
DDC Technical Service Letter for GHG17 DD Platform Heavy Duty Oil Pan Drain Plug Inserts.
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Some GHG17 DD Platform Heavy Duty oil pans may experience an issue with the oil pan drain plug insert spinning during removal or installation while completing an oil change. Leaking may also be observed at the drain plug and/or other plugs in the oil pan.
Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change.
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A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform. The revision includes additional information on retrofit and service kits.
Important Campaign Information letter announcing Dealer Travel for Campaign Performance.
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This letter is to announce a reimbursement available to dealers for travel to a customers location to perform a recall or field service campaign.
Warranty Information Letter for OWL and Warranty Manual Improvement: Sublets and Travel Time/Distance.
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In the spirit of continuous improvement, DTNA reviewed sublet-related policies and procedures. The goal was to improve language clarity and optimize processes.
Warranty Information Letter informing that to ensure that DTNA policies and service network practices align, the...
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Warranty Department will be revising the Warranty Manual.
Service Bulletin for Guidelines for Cleaning and Disinfecting Cab Surfaces.
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The following guidelines are for cleaning and disinfecting commonly touched surfaces on the inside and outside of a vehicle. For best results, follow cleaning and disinfecting procedures fully and consistently. Ensure there is adequate ventilation when using chemicals. NOTICE: Wipe down fragile components carefully to avoid damaging the vehicle.
Revised Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change.
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A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.
Technical Service Letter for DD Heavy Duty Platform Belt Tensioner Change.
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A newly designed, dual-arm friction shoe damping tensioner was implemented for the DD Heavy Duty Platform.
Warranty Information Letter for Warranty Training Online.
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DTNA is pleased to announce the release of new Warranty-related training videos. The videos provide Warranty content in short instructional videos that are available on demand through the AftermarkeTV Video Channel icon on the Aftermarket Resource Center (ARC) home page.
Warranty Policy Letter for Handling for Authorized Service Location Part Transfers.
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To promote 24-hour throughput and maximum efficiency, DTNA is adjusting multiple handling policies: Launching a new handling allowance for parts ordered from another Authorized Service Location because the facing Part Distribution Center (PDC) is out of stock Retiring Detroit's Customer First Program
Open recall and Field service Campaigns report send out to Dealers, General Managers, Service managers and warranty...
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managers.
Warranty Policy Letter explaining the Warranty Department is aligning with the frame rail repair policy, published in...
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DTNA Workshop Manuals, which states that there are very few cases in which welding a heat-treated frame rail is allowed. Therefore, before welding anything on a frame rail, contact the applicable regional service representative for approval.
Open recall and Field service Campaigns report send out to Dealers, General Managers, Service managers and warranty...
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managers
Service Bulletin for Midship Bearing Replacement for built vehicles with driveshafts SPL140, SPL170 or SPL250 with first order driveline vibration.
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This version replaces bulletin from 12/19/19.
Service Solution on Western Star speedometers.
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For certain speedometers the speedometer may drop out or the odometer may reset to zero.
Service Solution for Western Star vehicles equipped with Hendrickson AIRTEK Axles experiencing a Harsh Ride.
Service Bulletin for Midship Bearing Replacement for built vehicles with driveshafts SPL140, SPL170 or SPL250 with first...
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order driveline vibration.
Service Bulletin for midship bearing replacement.
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This procedure applies to all vehicles built with driveshafts SPL140, SPL170 or SPL250 with first order driveline vibration.
Technical Service Letter communicating that information on DD Heavy Duty Platform Belt and Belt Tensioner can be found...
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on TechLit.
Parts and Service Committee meeting minutes
Service Bulletin for Powernet Distribution Box Functional Changes
Communication to assist the field with service vibration issues on DTNA vehicles
Warranty Policy Letter to communicate Detroit Return Changes
Warranty Information Letter to announce addition of Thomas Built Bus as a brand with an Authorized Demonstrator Program
Service Information Bulletin was released, to add new procedures to address diagnostics near the high pressure pump
Warranty Information Letter sent to customers regarding new refrigerator supplier for returning parts.
Training Solution created by DTNA to provide guidance to customers when searching for service information for components...
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and systems not owned by Daimler Trucks North America (DTNA).
Western Star Odometers Recall Bulletin
Service Bulletin Vibration and Harsh Ride Troubleshooting
D18M7 ? Replaced by Recall D18R7 (FL802)
Release of DiagnosticLink 8.08 Service Pack 3
Warranty Bulletin for charge back exemtions
Recall Bulletin FL766- Western Star Power Cable Studs
Important Warranty Information to Freightliner and Western Star dealers on Transporter Photo Requirement Changes
Service Information Bulletin
MY18M4_Bulletin_02-MAY-2018 Field Service Campaign D18M4
aeo18M4 Field Service Campaign D18M4
MY18M4-Bulletin-02-MAY-2018 Field Service Campaign D18M4
aeo18M4 Field Service Campaign D18M4
If a GVWR certification label is lost or damaged, Freightliner will supply a duplicate label.
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Log on to DTNAConnect.com and under "DTNAConnect Resources", select the "Tool and Services" plus sign. Select "Request for Certification Labl or OWI." Fillout the form, then select "Review."
15-015 Warranty Exclusions Reminder
Engine
43 bulletinsCX Advocate for turbo oil drain cracking
CX Advocate for turbo oil drain cracking
CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
Service Solution for DEF Pump Wiring for Cummins CM2450 Engine Controller
Detroit Technical Service Letter for DD13 Cylinder Head and Cylinder Head Gasket Change.
DTNA received a field notification on multiple units regarding diagnostic fault codes that were found to be causing...
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issues to the After Treatment Control Module (ACM). These fault codes indicated that the ACM communication message was not received by the Motor Control Module (MCM) which in certain cases, led to a 25% engine de-rate situation. Further diagnosis revealed that the DT12 wiring harness was chafing and contacting the transmission TCU case. To reduce potential chafing areas, the proposed short-term containment was to route the wiring harness using additional tie straps. This communication applies to Freightliner and Western Star vehicles built with DT12 transmissions.
Warranty Information Letter for Detroit Resources: Exploded View DD Platform and DT12 Posters.
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Detroit's TechComm team created visual aids for the network and released exploded view posters for DD platform engines. In early 2021, Detroit added multiple DT12 posters.
Technical Service Letter for GHG17 1-Box Inlet and Outlet Exhaust Clamps.
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There is a short supply of exhaust clamps, part number DDE A6809950502, used as inlet and outlet exhaust clamps on GHG17 heavy duty engines (DD13, DD15 and DD16) with a 1-Box aftertreatment configuration. Exhaust clamp part number TCX T130158342AC2 may be used as a substitute for DDE A6809950502, but be aware of the different torque specs between the two parts.
Tech Talk discussion on failed engine mounts.
Detroit Diesel Special Publication informing about Heavy Duty Friction Style Belt Tensioner Kit.
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This heavy duty friction style belt tensioner kit contains the belt tensioner and two M10 bolts to correctly pin the friction style belt tensioner. The M10x80mm bolt is used to pin the engine cooling fan drive arm. The M10x50mm bolt is used to pin the engine accessory drive arm.
Training Solutions for Fuel Leak Found at High Pressure Fuel Pump Weep Hole for Heavy Duty DD Engines.
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Occasionally we see trucks come in with fuel leaking from the high pressure fuel pump weep hole. This is NOT a defect in the pump and further diagnostics need to be performed to find the root cause.
Warranty Information Letter for Warranty Long Block Program Change.
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The Detroit Reman Long Block Program has expanded. The expansion reduces complexity in ordering reman engines and promotes stocking reman engines to meet uptime commitments.
Service Solution for Lower Radiator Pipe Rubbing on X15 Cummins engine.
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Due to limited clearance, the lower radiator pipe may rub on the engine block and lower radiator hose may rub on the front engine support causing radiator coolant leakage on Cummins X15 installations.
Technical Service Letter for GHG17 Heavy Duty Engine Platform 1-BOX Aftertreatment System (ATS) Wire Harness...
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experiencing chaffing caused by vibration and dirt collecting in the harness conduit.
Service Bulletin explaining Western Star's courtesy engineering policy.
Updated Recall Safety Bulletin for vehicles in Australia and New Zealand with DD15 engines regarding high pressure fuel lines.
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Language was clarified that this only applies to Australia and New Zealand.
Service Solution for WABCO HP air dryer turbo cut-off valve replacement.
Export Recall Safety Bulletin for vehicles in Australia and New Zealand with DD15 engines regarding high pressure fuel...
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lines.
Field Service Campaign for Wabco HP Air Dryer Turbo Cut-off Valve
Service Systems Development provided document to service locations on price list reflects current charges to engine...
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horsepower ratings for HDEP and MDEG engine platforms.
Document sent out by Service Systems Development to fix issue related to DD13 engines built between June 5 and July 22,...
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2019 starting with ESN 471928S0697276,have some incorrect values set which can cause the fan to lock on at all times.
Service Bulletin to testing of EGR Cooler Water Manifold Assembly in DD13 engines.
HDEP GHG17 engines are not equipped with turbo wastegates.
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Steps in this troubleshooting involving wastegates were removed.
This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket,...
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P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket,...
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P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket,...
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P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket,...
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P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket,...
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P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
This service kit includes all necessary parts to replace the high pressure fuel rail feed lines, mounting bracket,...
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P-clips and mounting hardware in the event one of these parts are loosened, removed or missing from the engine.
Engine Replacement Procedures
SS 1033403 - WST Wiper Motor not Parking Issues
SS 1033403 - WST Wiper Motor not Parking Issues
707-13 Description and Operation of the HC Doser Fuel Supply Pressure Control Valve - Two Filter System
Inspection of the DD13 Turbocharger
15TS10Rev DD Engine Platform Coolant Filter
15TL4 W470589050900 ? 3/8? Drive GEN2 Two-Stage Valve Socket
sbw0116 Pilot Bearing Spacer for Detroit Engines with Eaton transmissions
14TS18 GHG14 DD Engine EGR System Fault Code
714-14 Symptom Diagnostics - Low Engine Compression
712-14 Engine Coolant Temperature
0237-14 Engine Brake Solenoid
Fuel System
30 bulletinsParts Bulletin for Fluorosilicone Fuel Tank Cap Seals
Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
Warranty Information letter announcing that DTNA is increasing the Standard Diagnostic Times (SDTs) shown.
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The updated after treatment system (ATS) diesel exhaust fluid (DEF) pump times will be applied to repair orders opened on or after April 12, 2021.
Superseding Letter to an Important Campaign Information Letter to announce a reimbursement available to dealers for...
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travel to a customer's location to perform a recall or field service campaign. Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately. This letter supersedes ICI20-022R.
Special Publication letter for Two-Filter Fuel System KM59 GEN1 DD15 DD16 Severe Duty High Pressure Fuel Rail Feed Lines...
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Service Kit.
Customer Service Announcement for Release of DiagnosticLink 8.12 Service Pack 2.
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On Thursday, September 3, 2020, Service Pack (SP) 2 for DiagnosticLink 8.12 Standard and Professional will be made available to download from the Detroit Diesel server.
Revised letter is to announce a reimbursement available to dealers for travel to a customer's location to perform a recall or field service campaign.
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Potential travel reimbursement applies to DTNA truck dealers and Detroit Diesel distributors. Thomas Built Buses will be addressed separately.
Technical Service Letter for EPA10, GHG14, GHG17 Diesel Particulate Filter (DPF) Compatibility.
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Note: This document supersedes 14 TS-25 and 15 TS-8. Detroit Diesel has determined that some, Diesel Particulate Filters (DPFs) are compatible in pairs and or can be mixed together within EPA10 and GHG14 Systems. For 1-BOX and Two-Box Configuration Aftertreatment Systems (ATS), this is only possible when the filters are used in accordance with Tables 1 and 2 shown below. All other DPFs, NOT mentioned below, are NOT compatible.
Customer Service Announcement informing that Service Pack (SP) 1 for DiagnosticLink 8.12 Standard and Professional is...
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available to download from the Detroit Diesel server.
Customer Service Announcement saying that Service Pack (SP) 3 for DiagnosticLink 8.11 Standard and Professional will be...
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available for download from the Detroit Diesel server.
Owner's Letter for emissions recall FL821 for Western Star 4900 exhaust pipes emitting excess pollutants.
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Pipe support brackets lacks durability and may cause pipe to crack at bellows and weld breaks to occur at the flange.
Emissions Recall for Western Star 4900 exhaust pipes emitting excess pollutants.
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Pipe support brackets lacks durability and may cause pipe to crack at bellows and weld breaks to occur at the flange.
Service Bulletin for Equiflo Fuel System Breather Tube Inspection
Service Information Bulletin for Symptom Diagnostics - Fluid in the Aftertreatment - Diesel Fuel Contamination.
Service Information Bulletin regarding PTO Dosing.
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This feature enables Active Regeneration of the DPFs while in PTO mode.
Fuel Level Sending Unit Retrofit
0504-18 Fuel System - Fuel Injectors
0504-18 Fuel System - Fuel Injectors
0404-18 GHG17 DD8 - Aftertreatment Systems - Diesel Particulate Filter End Cap
608-13 High Pressure Fuel Flange-Two-Filter System
710-13 Metal in the Fuel System - Three-Filter Fuel System
712-13 Fuel Cooler Leak Test Procedure - Three-Filter Fuel System
705-13 Test-E Three-Filter Fuel System
702-13 Test E Two-Filter Fuel System
0404-18 GHG17 DD8 - Aftertreatment Systems - Diesel Particulate Filter End Cap
SS 1033297: WST 4900 Low Max Exhaust Pipe Installation improvements
sbw5464 Fuel Level Sending Unit Retrofit
18SP726 ? EPA10 GHG14 Two-Filter Fuel System KM59 GEN1 DD13 High Pressure Fuel Fee
15TL6 W470589129100 ? HDEP HP Fuel Rail Test Caps
15-017 Detroit: Updated Fuel Injector SDTs
Electrical
25 bulletinsRevised Emissions Recall: Cummins DEF Sensor Shortage.
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REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a new DEF header is not required. There have been some other minor changes to the work instructions and SRT times.
Emissions Recall: Cummins DEF Sensor Shortage
Western Star Service Bulletin for HVAC Actuator Replacement.
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The wiring harness of the actuator of the fresh air recirculation door on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion and corrosion.
HVAC Actuator Wiring Harness.
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Revision History: Service kit part number changed from RDH RD5 17147 0 to WWS RD-3-9069-0 on 12/9/21. The wiring harness of the actuator of the fresh air recirculation door, shown in Fig. 1, on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion and corrosion.
Customer Advisory Letter for HVAC Actuator Wiring Harness.
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The wiring harness of the actuator of the fresh air recirculation door, shown in Fig. 1, on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion and corrosion.
Service Solution SS 1033094 KUS Float Tube Fuel Level Sensor Inform...
Western Star Service Bulletin for Powernet Troubleshooting Guide - Batteries, Path, Alternator, and Starter.
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When troubleshooting powernet issues, use the BCT-460DTNA PowerNet Assessment Tool. As of May 29, 2018, the AutoMeter is the only Daimler-approved tool for troubleshooting vehicle Powernet issues.
Warranty Policy Letter for battery tags.
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DTNA determined that since adopting the AutoMeter BCT-460DTNA Powernet Assessment Tool (AutoMeter) as the required powernet system tester, not all battery tags have to be retained support Warranty-related claims.
Warranty Information Letter for Detroit NOx Sensor Circuit Fault Codes - Claim Guidelines.
Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update.
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On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
Service Bulletin for Guidelines for Repairing or Replacing an Electrical Harness.
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Use the guidelines in this bulletin to determine if a damaged electrical harness should be repaired or replaced.
Warranty Information Letter announcing Detroit NOx Sensor Circuit Improvements for GHG17 After Treatment Systems
Service Solution on failing RX modules in Western Star vehicles.
Service Information Bulletin for Communication Loss with a Common Powertrain Controller (CPC) Module (CPC Heartbeat...
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Message is no Longer Arriving)
Service Bulletin provided to customers regarding installation of a new MCM 21-pin jumper harness.
Customer Advisory Letter- Battery Power Cable Routing
SS - 1033194 WST 4900FA Cab Mounting Crossmember Interfering with Battery Cables Heat Shield
0501-18 Aftertreatment Control Module (ACM)
SS - 1033194 WST 4900FA Cab Mounting Crossmember Interfering with Battery Cables Heat Shield
0501-18 Aftertreatment Control Module (ACM)
RX Module Fault Codes
sbw5439 RX Module Fault Codes
Cleaning of the Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports
15-016-DLR New Essential Tool For CPWA, CPPRA, Ltd CPPRA, & DSDWC Parties: Cadex CA-12 Battery Tester
sbw5461 Guidelines for Repairing or Replacing an Electrical Harness
Brakes
22 bulletinsUpdated Western Star Parts Technical Bulletin for Universal Design Floor Mats.
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This bulletin replaces the version dated February 12, 2021. Information about parts notes in the Paragon system have been added and the trimming instructions are revised. Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor mat as a guide for optimal results. The new mat should not interfere with safety-critical equipment, such as foot pedals.
Western Star Parts Technical Bulletin for Universal Design Floor Mats.
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Universal floor mat designs fit multiple cab configurations and may require trimming. Trim lines displaying size options are scored into the pad side of the mat; use an existing floor mat as a guide for optimal results. The new mat should not interfere with safety-critical equipment, such as foot pedals.
Western Star Service Bulletin for Access to Front Brake Zerk Fittings.
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Certain vehicles with Detroit front axles and Meritor EX-L front air disc brakes do not have access to the front brake zerk fittings for lubrication.
Revised Service Solution for 20K Detroit Axle King Pin Lube Access.
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Western Star trucks equipped with 20k Detroit front axles and disc brakes built up to 8/17/2020 do not have sufficient room to access the king pin grease zerk.
Service Solution for 20K Detroit Axle King Pin Lube Access.
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WST trucks equipped with 20k Detroit front axles and disc brakes built up to 8/17/2020 do not have sufficient room to access the king pin grease zerk.
Training Solution for Western Star Front Brake Squeal - Burnishing Procedure.
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The brake burnishing procedure can be used to help reduce brake related noise or imbalance concerns which may occur in the field.
Customer Advisory Letter for ABS ECU Software Update.
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The Enhanced Stability Control (ESC) function within the ABS module that applies to the vehicles in your possession needs to be updated for the axle spread values. The ESC with the current values functions as it should, but should be updated to ensure proper calibration in the future.
Recall Bulletin FL773 Lowmax Brake Hoses
Recall Bulletin FL773 Lowmax Brake Hoses
30mm Air Disc Brake Caliper Bolt Torque Adapter DSNCHA018005
FL794 Brake Caliper Mounting Bolts Dealer Bulletin
Brake Caliper Mounting Bolts
TS 1033768: Western Star Front Brake Squeal - Burnishing Procedure
FL772-Dealer bulletin for Brake Caliper Mounting Bolts recall
SS 1033417: WST 4900 Low Max w/Disc Brakes Front Brake Hose rubbing Hood fender
FL756 Brake Light Pressure Switches
SS 1033417: WST 4900 Low Max w/Disc Brakes Front Brake Hose rubbing Hood fender
Brake Light Pressure switch may not activate the brake lights with a light application of the brake pedal.
sbw4206 Brake Shimmy?Meritor SteeLite X30? Brake Drum With Excessive Runout
sbw5401 Turn Signal and Brake Override Circuit
sbw4206 Brake Shimmy - Meritor SteeLite X30 Brake Drum With Excessive Runout
FL758 Brake Mounting Caliper Bolts
Body & Paint
14 bulletinsSF626 Western Star Window Replacement Inspection Notification.
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This letter is to inform you that Field Service Campaign SF626 Western Star Window Replacement Inspection Notification campaign was released.
Portland Truck Plant Paint Changes
Warranty Information Letter for Body Builder/Truck Equipment Manufacturer Demonstration Program.
Tech Talk discussion on SS 1034711 HADLEY MIRROR
Service Solution for Hadley Upper Mirror Glass Vibration.
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The following suggestions are not guaranteed to eliminate or fix the Hadley mirror vibration concern. We have had mixed results in field-testing. In some cases, these solutions eliminate or reduce the vibration and in others, it does not seem to make a difference. DTNA continues to work on a permanent solution to this concern.
Service Bulletin for Window Regulator Retrofit.
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The bulletin dated December 4, 2019 has been revised to include 4800 Models. Beginning 04/01/2019 Western Star cab doors were updated to a new style regulator and window. When replacing an older style regulator or window the vehicle must be retrofitted to the new style regulator and window.
Service Solution for Western Star Velvac Door Mirror Seal Curling.
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The rubber that is rolling back is actually a rubber tape. Originally, the mirrors did not have this tape. Velvac added the tape to address some whistling complaints from customers.
Service Bulletin for Window Regulator Retrofit.
Warranty Policy Change for Delivery-Related Changes: Electronic Proof of Delivery and Loose Component Claim Filing
Customer Service Announcement Letter Revision for Dealers/Distributors Accessing DDEC Backdoor Passwords
Tool Letter for DT12 Seal Protector Sleeve
SS 1033462 - WST Cab Mounted Mekra Mirror Cover Chrome Peeling
SS 1033462 - WST Cab Mounted Mekra Mirror Cover Chrome Peeling
sbw9801 Paint Finish Standards
Transmission
12 bulletinsCX Advocate communication for clutch bolts
Important Campaign Information Letter for DDC D21M1 Termination Date Extended.
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This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to July 1, 2022.
Detroit Field Service Campaign for DT12 Transmission Drive Shaft Cover Plug Reseal.
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Daimler Trucks North America LLC, on behalf of its DETROIT Powertrain Division, is initiating Field Service Campaign D21M1 on certain DT12 transmissions in order to reseal the bypass plugs of the drive shaft cover located in front housing.
Revised Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing.
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Revisions are in blue. With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.
Warranty Policy Letter for Alliance/Mascot Aftermarket Warranty and Claim Filing.
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With Mascot now in partnership with Detroit Reman and Alliance Parts, DTNA is pleased to announce that Mascot coverage has been added to OWL. Remanufactured Alliance/Mascot parts include transmission, differential, steering gear, and steering pump used in an on-highway vehicle applications. The Alliance/Mascot aftermarket warranty coverage period has not changed: depending on the part, coverage is for one (1) or two (2) years and current parts, labor, and reimbursement policies apply.
Service Bulletin for Lengthening the Backup Light Harness.
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Though the back-up light harness is long enough to connect to the backup light switch, it may be short enough that the wire seals in the connector can be stressed. Moisture entering through the seals can cause corrosion, resulting in a bad connection and/or failure of the switch. As a result, backup lights and, if equipped, the backup alarm, may not function when the vehicle is shifted into reverse.
Service Solution to address WST Cab drone / vibration / tapping Under acceleration for vehicles w/Eaton Manual Trans.
Service Solution for prematurely failing coolers on WST Models equipped with Allison Transmissions and Rocore...
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Transmission coolers (07-23256-001) with tow pin front X-member. Part number 07-25266-000 is a direct replacement of the failing coolers and requires no modifications or plumbing changes.
Warranty Policy Letter to communicate remarketing handling cap for Detroit DT12 Transmission.
TS 1033699: DT12 Transmission Driver Interview: Shifting Complaint Questionnaire
sbw2019 Kysor Fan Clutch Rocking Runout Inspection
15-010-DLR Transmission Cooler Line Photos
Suspension
10 bulletinsService Solution for Thread Spring Pin Suspension Alignment & Installation
Western Star Service Bulletin for Axle Flange Gasket Replaced with O-Ring.
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Daimler Trucks North America has released a new axle shaft to hub rubber O-ring (part number 11-30728-000) as a replacement for the paper gasket (part number 11-14418-000). The new O-ring will provide better sealing and is reusable. It is quicker and easier to use compared to the paper gasket, because using a paper gasket requires cleaning the hub when the axle shaft is removed.
Western Star Bulletin for Non-Airliner Rear Suspension Crossmember Fastener Change.
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With the start of production on March 2, 2020, the fasteners used to assemble the non-Airliner rear suspension (bogie) crossmember have changed. The rear suspension bogie crossmember gussets to the C-channel will be assembled with 5/818 fasteners. This change includes a revision to a higher friction nut that requires an increase in tightening torque. The new higher friction nut can be identified by its green color.
Tool Letter for New Final Drive Driver Controlled Differential Lock Spring Compressor.
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These new axles require a new tool to compress the Driver Controlled Differential Lock (DCDL) spring. To remove and install the DCDL spring, the tool DSN0FDA17001 is needed.
SS 1034171 Airliner Rear Suspension Chassis Lean Troubleshooting
Airliner Rear Suspension Crossmember Fastener Change
sbw31014 Airliner Rear Suspension Crossmember Fastener Change
With the start of production on April 2, 2018, the fasteners used to assemble Airliner rear suspension crossmembers changed.
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The forward-suspnsion crossmember will assembled with 5/8-18 fasteners and the rear-suspension (bogie) crossmember will be assembled with 3/4-16 fasteners.
33-4- Bearing Spacer Replacement, ConMet PreSet Steer Hubs
35-11 - Bearing Spacer Replacement, ConMet PreSet Drive Hubs
Lighting
8 bulletinsCustomer Service Announcement for DiagnosticLink Software Update Reminder.
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Due to various software changes and fixes, vehicles will require DiagnosticLink 8.12 to perform functional programming. Failure to use this version may cause errors, incomplete programming, and poor vehicle performance. Because of this, all DiagnosticLink 8.09 installed versions will be disabled as of Thursday, July 23, 2020.
Warranty Policy Letter for Chassis Progressive Damage Policy Change.
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Effective for repair orders opened on or after April 27, 2020, if an Authorized Service Location installed a part which later has a warrantable failure, progressive damage and labor may be covered under the Aftermarket Parts Limited Parts Warranty (Parts Warranty).
Warranty Policy Letter for Handling Change: Over the Counter Aftermarket Parts Replacement Program.
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DTNA is pleased to announce that handling will increase to 33% for Misc. Replacement Part type claims filed under the Over the Counter (OTC) Aftermarket Parts Replacement Program.
Customer Service Announcement for a policy change regarding Detroit Service Information Bulletins (SIBs) will now have a...
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60-day expiration, starting on the release day of the bulletin. The intent of a SIB is to notify the service network of a major change to one or more service procedures. Do not save SIBs nor reference them for repairs, as they are uncontrolled and never updated.
Customer Advisory Letter for Airliner welded axle seats.
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The welded axle seats were installed incorrectly on the rear most drive axle for specific vehicles resulting in an incorrect axle pinion angle. The existing welded axle seats will be removed and replaced with new axle seats installed in the correct orientation.
Improperly installed power stud may contact the bulkhead, resulting in potential arcing, which may increase the risk of...
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fire.
Some vehicles may have been incorrectly shimmed at the factory, and may lean slightly to the right or left.
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While this does not affect the operation of the vehicle, it may be visually unpleasing to many customers.
sbw5430 Disconnecting or Connecting Daytime Running Lights
Software & Calibration
7 bulletinsCX Advocate for NOx conversion low faults.
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Update to CXA 6_24_NOx submission.
Revised Western Star Service Bulletin for Drive Line Vibration.
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Minor note: added an update of document previously submitted. The related VMRS codes are added
Warranty Information Letter announcing DTNA is adjusting the Standard Repair Times (SRTs) shown.
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The updated times will be applied to repair orders opened on or after April 5, 2021.
Starting on November 23, 2020, DiagnosticLink 8.13 (Build 4527) was made available.
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Current subscribers of DiagnosticLink 8.11 or 8.12 may upgrade to DiagnosticLink 8.13 at no cost. All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
OEM and distributor announcement for DiagnosticLink 8.12 (Build 4527) was made available.
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All DTNA Service shops & OEM locations are required to maintain the latest version of software on each of their stations.
Customer Service Announcement for Release of DiagnosticLink 8.12.
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On Wednesday, June 10, 2020, DiagnosticLink 8.12 will be made available for download from the ordering system. Current subscribers of DiagnosticLink 8.xx can upgrade to DiagnosticLink 8.12 at no cost. All DTNA service shops are required to maintain the latest version of software on each of their stations.
Warranty Information Letter updated to communicate warranty system updates.
HVAC & Climate
6 bulletinsUpdated Western Star Service Bulletin for HVAC Actuator Replacement
New Valeo A/C Compressor
Service Bulletin on A/C System Receiver-Drier Replacement Guidelines.
Service Solution to fix AC cooling performance due to improper HVAC function.
In some operating conditions, water may leak into the cab onto the passenger floor through the HVAC fresh air intake on...
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the frontwall on 47,00,4900, and 5700 models.
sbw8325 Side Window Defroster and Cooling Improvement Retrofit
Tires & Wheels
3 bulletinsImportant Campaign Information- FL766 Interim Recall Ending ? Final Recall to Begin
With the start of production on March 6, 2018, the fasteners used to attach the slide- and plate-mount style fifth...
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wheels to the outboard angles changed to M16 metric bolts, nuts, and washers.
14TL-7Rev DD Platform Flywheel Housing Runout Tool W470589032100
Steering
1 bulletinTech Talk discussion about power steering fluid.
Hybrid & EV
1 bulletinThe modified parked regeneration strategy has been standard on GHG17 units since the start of GHG17 production and was...
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added to EPA10 and GHG14 units with a software update. The modified regeneration utilizes an improved strategy to clean the DOC inlet face and reduce downtime due to DOC face plugging.
Infotainment
1 bulletinDTNA Special Tools Group has approved the use of Haweka Axis4000 aftermarket alignment system for use on DTNA products at DTNA service locations.
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The Axis4000 system uses the reference points required by DTNA for precise, accurate, and repeatable measurements. Axis4000 is a sophisticated, user-friendly system that utilizes computer based camera-radio technology and references the center line of the frame for measuring and providing alignment results to DTNA specifications.