Transit bus retrofit to upgrade parking brake release tank to 2.5 gallons.
Proterra technical service bulletin SC-21-021 for 2019-2020 Proterra Catalyst and 2019-2020 Proterra ZX5.
- Bulletin number
- SC-21-021 (SC-21-021)
- Component
- Service brakes
- Summary
- Transit bus retrofit to upgrade parking brake release tank to 2.5 gallons.
Vehicles covered
- Proterra Catalyst 2019-2020 20192020
- Proterra ZX5 2019-2020 20192020
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