# Service bulletin SB\-18\-74

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: 10154939
- Published by NHTSA: 2019\-03\-18
- Manufacturer's number: SB\-18\-74
- Manufacturer's date: 2019\-02\-14
- NHTSA component: SUSPENSION

## NHTSA's summary

Technical Service Bulletin Front Axle Control Arm Retrofit \(RL75EC to RL82EC\) was issued to replace the Control Arms on the front axle to allow a higher front axle weight.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10154939-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10154939-9999.pdf)

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

## Components

Suspension

## Vehicles listed

- 2015 to 2018 PROTERRA CATALYST

JSON: [/v1/bulletins/10154939](/v1/bulletins/10154939)

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