# NHTSA SQ SQ00012
> **OMITTED QUICK RELEASE VALVE (PARK BRAKE)** · Opened 2000-06-27 · Closed 2000-07-21
## Investigation
- **Action number:** SQ00012
- **Type:** SQ
- **Open date:** 2000-06-27
- **Close date:** 2000-07-21
- **Manufacturer:** Capacity of Texas
- **Affected makes:** CAPACITY
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 1999, 2000
- **Affected (make, year) variants:** 2
## Summary

IN MAY 2000, COT INITIATED A SERVICE BULLETIN INFORMING COLLINS BUS CORP.(COLLINS) OF AN ASSEMBLY PLANT ERROR ON BUS CHASSIS SUPPLIED TO THEM.CERTAIN CHASSIS BUILT FROM 9-1-99 TO 4-1-00 WERE NOT EQUIPPED WITH A QUICK RELEASE VALVE AND CONSEQUENTLY HAVE A SLOW PARKING BRAKE APPLICATION TIME.THE SERVICED BULLETIN INSTRUCTS COLLINS TO INSPECT FOR THE MISSING VALVE AND INSTALL, IF NEEDED.SLOW ACTIVATION TIME OF THE AIR OPERATED PARKING BRAKE SYSTEM COULD HAVE SAFETY CONSEQUENCES.THE PURPOSE OF THE SQ IS TO DETERMINE THE EXTENT OF THE PROBLEM EXPERIENCE, CONSEQUENCES, AND IF A SAFETY RECALL IS WARRANTED.

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=SQ00012)
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