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Service bulletins for the 2019 Western Star 4900

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

292 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
SBW42-0142020-12-22. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; SERVICE BRAKES; EQUIPMENT. Western Star Service Bulletin for Access to Front Brake Zerk Fittings. 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.
TS10337682020-07-31. Service bulletin. SERVICE BRAKES, HYDRAULIC. Training Solution for Western Star Front Brake Squeal - Burnishing Procedure. The brake burnishing procedure can be used to help reduce brake related noise or imbalance concerns which may occur in the field.
SS10345312019-10-30. Service bulletin. SERVICE BRAKES, AIR; EQUIPMENT. Service Solution for WABCO HP air dryer turbo cut-off valve replacement.
FL773 Lowmax Bra2019-04-08. Service bulletin. SERVICE BRAKES. Recall Bulletin FL773 Lowmax Brake Hoses
FL773 Lowmax Bra2019-04-01. Service bulletin. SERVICE BRAKES, AIR:DISC. Recall Bulletin FL773 Lowmax Brake Hoses
18TL182019-03-18. Service bulletin. SERVICE BRAKES. 30mm Air Disc Brake Caliper Bolt Torque Adapter DSNCHA018005
FL7942019-03-18. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. FL794 Brake Caliper Mounting Bolts Dealer Bulletin
FL7942019-03-11. Service bulletin. SERVICE BRAKES, AIR:DISC:CALIPER. Brake Caliper Mounting Bolts
DOC-10337682018-12-10. Service bulletin. SERVICE BRAKES. TS 1033768: Western Star Front Brake Squeal - Burnishing Procedure
DOC-10334172018-12-10. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS. SS 1033417: WST 4900 Low Max w/Disc Brakes Front Brake Hose rubbing Hood fender
DOC-10334172018-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC. SS 1033417: WST 4900 Low Max w/Disc Brakes Front Brake Hose rubbing Hood fender
FL7562018-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, AIR; ELECTRICAL SYSTEM. Brake Light Pressure switch may not activate the brake lights with a light application of the brake pedal.
sbw42062018-06-18. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM; SERVICE BRAKES, AIR:DRUM. sbw4206 Brake Shimmy?Meritor® SteeLite X30? Brake Drum With Excessive Runout
sbw42062018-03-05. Service bulletin. SERVICE BRAKES. sbw4206 Brake Shimmy - Meritor SteeLite X30 Brake Drum With Excessive Runout
FL7582018-02-12. Service bulletin. SERVICE BRAKES. FL758 Brake Mounting Caliper Bolts

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.