Technical Resource Guide
Technical Resource Guide
All Western Star X-Series technical details can be found in the Technical Resource Guide (TRG). For access to the TRG, log onto DTNAPortal.com.
WESTERN STAR LEGACY MODEL TECHNICAL RESOURCE GUIDE
PLEASE NOTE: All materials below are for legacy Western Star models – 4700, 4800, 4900, 6900 – and are no longer maintained. Please go to the Technical Resource Guide noted above for current X-Series product.
Electrical, cab and general information applicable to EPA2010 legacy models reference V3.2, for all other content and legacy builds built prior to EPA2010 please select V3.1.
The CAD Data (Section 06D) includes Basic 2D Body Builder Drawings available for download in .zip format. To download, right-click on a .zip file, select "Save Target As," and save to your computer. Unzip the file, then view the .dxf Drawings with your CAD software.
DXF Drawings can be loaded by most 2D CAD software. See Section 06D for more details on 2D and 3D CAD format availability.
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01A - Electrical Systems
v3.1 (Air and Electrical Systems) v3.2b -
01B - Electrical Schematics
v3.1 -
01C - Front Wall Cab Connection Pinouts
v3.1 -
01D - Engine Interfacing Systems
v3.1 -
02 - Exhaust Systems
v3.1 X12 Supplement -
03 - Frame, Bumper and Crossmember Components
v3.1 -
04 - Powertrain
v3.1 -
05 - Chassis Components and DEF Locations
v3.1 Supplemental front axle air spring -
06A - 4700 and 4800 Model Layouts
v3.1 -
06B - 4900 123 and 132 Model Layouts
v3.1 -
06C - 4900XD and 6900XD Model Layouts
v3.1 -
06D - CAD Data
v3.1 -
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4700 SF, Side, Top & Front View
v3.1 -
4700 SB, Side, Top & Front View
v3.1 -
4800 SF, 109, Side & Top View
v3.1 -
4800 SF, 109, Tandem Steer, Side & Top View
v3.1 -
4800 SB, 109, Side & Top View
v3.1 -
4800 SB, 109, Tandem Steer, Side & Top View
v3.1 -
4900 SF, 123, LowMax, Side & Top View
v3.1 -
4900 SF, 123, Side & Top View
v3.1 -
4900 SB, 123, Side & Top View
v3.1 -
4900 SB, 123, Tandem Steer, Side & Top View
v3.1 -
6900 XD, 141, Side & Top View
v3.1
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07 - Cab Data
v3.1 v3.2 -
08 - Suspension Systems
v3.1 -
09 - General Information
v3.1 v3.2 -
10 - Other
PTO Control REPTO 
Switch Selector Guide Webinar (4700 Enhanced model only)
Comments? Questions?
If you have questions about content in the TRG please use this inquiry form to reach the TEM Assistance Group or if your question is regarding a specific vehicle or concern you can call the Customer Assistance Center by phone at 1-855-253-0426.
Hours of operation: 8:00 am - 7:00 pm (EST) / 5:00 am - 4:00 pm (PST)
You will need the following information during your phone call:
- Last 6 digits of Serial Number
- Clear description of what you need to accomplish
- WST Dealer contact name and phone number
