Service brakes, air: supply: quick release valve
Peterbilt technical service bulletin 20PBB for 2016-2020 Peterbilt 520 and 2016-2020 Peterbilt 320.
- Bulletin number
- 20PBB
- Component
- Service brakes, air: supply: quick release valve
- Summary
- Safety Recall: Peterbilt has decided that certain Model 320 and 520 trucks built between 2/20/2015 and 7/16/2019 may have been built without a quick release valve. The absence of this valve could affect rear brake timing on certain vehicles equipped with a tri-drive or liftable tag axle and Dual Seated or Right Hand Stand-Up steering configurations. Resolutoin is to inspect for a quick release valve installed, and if there is not one, to install a quick release valve.
Owners of these vehicles have filed 4 complaints in the brakes category.
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