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Service bulletin KC-2273

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 id10235366
Published by NHTSA2023-05-03
Manufacturer's numberKC-2273
Manufacturer's date2023-04-27
NHTSA componentSUSPENSION

NHTSA's summary

CBR: Mack - Pre-Delivery Inspection (PDI) Torque Values

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

Suspension

Vehicles listed
MACK ANTHEM (AN)2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GR)2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (PI/PN)2023, 2024 (the catalog's model; the bulletin names a series or trim of it)

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

Other bulletins for the same vehicles and component
CBR 2246-5 0320262026-04-02. Service bulletin. CBR - Z Spring Bracket Wear.
CBR-2016 2024122025-01-02. Service bulletin. Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues.
S3938 2024042024-05-01. Service bulletin. Service Campaign: Primax Bracket Clocking
S3857 2024022024-03-06. Service bulletin. Service Campaign - MMD Suspension Bracket Torque.
CBR-2014 2024022024-03-05. Service bulletin. CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.
CBR-2016 2024012024-02-02. Service bulletin. CBR: Frame Or Cab Lean
M728-005A 2023082023-09-06. Service bulletin. TSB: Barksdale Leveling Valve, Leak Test
CBR-2306 2023082023-09-06. Service bulletin. CBR: Lift Axle Lowers During An Anti-lock Braking System (ABS)Breaking Event Or When Weight Is Added To The 5th Wheel/Rear Suspension- AN Model
KC-22922023-07-06. Service bulletin. Vehicles Equipped With Chalmers Suspension - Frame Bracket Hardware Loose or Interfering
KC-2273-Rev62023-06-05. Service bulletin. CBR: Pre-Delivery Inspection (PDI) Torque Values. This is to help with the torque specs needed to complete a Pre- Delivery Inspection (PDI).