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Service bulletin BS4757E

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10210976
Published by NHTSA2022-05-05
Manufacturer's numberBS4757E
Manufacturer's date2022-04-07
NHTSA componentEQUIPMENT; SERVICE BRAKES, AIR

NHTSA's summary

Replace the 50 PSI interlock pressure regulator for a 65 PSI interlock pressure regulator

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Equipment and accessories

Vehicles listed
NOVA BUS LFS2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V3550002026-06-02. SERVICE BRAKES, AIR:SUPPLY:LOW PRESSURE WARNING:SWITCH
24V6570002024-09-09. EQUIPMENT:ELECTRICAL; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT
20244262024-07-25. Brakes
20244252024-07-25. Brakes
24V5590002024-07-25. SERVICE BRAKES, AIR:DISC:CHAMBER
24V5580002024-07-25. SERVICE BRAKES, AIR:DISC:CHAMBER
22V3230002022-05-11. EQUIPMENT; EXTERIOR LIGHTING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
BS5357E2023-04-03. Service bulletin. Lexan panels cracking at mounting holes. Need to change the attachment of Lexan panels due to apparent cracks.
BS5356E2023-04-03. Service bulletin. Lexan panels cracking at mounting holes. Need to change the attachment of Lexan panels due to apparent cracks.
LI5315E2022-10-27. Service bulletin. On the Thermo King HVAC roof unit, after replacing the actuator N8897109, some customers could see the error code 36.
BS5300E2022-10-03. Service bulletin. HVAC deflectors are breaking at the folded attachment points. The brackets broke right at the bending due to a sharp curve
BS5299E2022-10-03. Service bulletin. HVAC deflectors are breaking at the folded attachment points. The brackets broke right at the bending due to a sharp curve
BS5210ER12022-04-05. Service bulletin. Horn may fail due to the low internal high heat resistance.
BS5182E2021-10-05. Service bulletin. Brake chambers may fail and cause the drive axle brakes to overheat.
BS5119E2021-08-02. Service bulletin. Brake chambers may fail and cause the drive axle brakes to overheat
ft50902021-06-02. Service bulletin. Kidde fire suppression system tamper seal
ft50682021-05-04. Service bulletin. Hydraulic Tank Rubber Mount Bushing Failures