# Service bulletin FSB 722 004

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.

- Type: Service bulletin
- NHTSA id: 10200219
- Published by NHTSA: 2021\-08\-09
- Manufacturer's number: FSB 722 004
- Manufacturer's date: 2015\-10\-30
- NHTSA component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); SUSPENSION

## NHTSA's summary

Twin Y Suspension, Trailing Blade, Replacement. Some MACK CHU and CXU trucks built 06/13/2013 through 09/25/2015 and equipped with Twin\-Y suspension may require replacement of the Twin\-Y trailing blades with a more robust design. The new Twin\-Y trailing blades have a new profile with a stronger material thickness of 7.0 mm \(0.28 in\). All four trailing blades will require replacement in this repair procedure.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10200219-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10200219-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Driver assistance, Equipment and accessories, Labels and manuals, Suspension

## Vehicles listed

- 2014 to 2016 MACK CHU
- 2014 to 2016 MACK CXU

JSON: [/v1/bulletins/10200219](/v1/bulletins/10200219)

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