# NHTSA Preliminary Evaluation PE04047
> **SERVICE BRAKE SUPPLY TANK SEPARATION** · Opened 2004-06-18 · Closed 2004-08-30
## Investigation
- **Action number:** PE04047
- **Type:** Preliminary Evaluation
- **Open date:** 2004-06-18
- **Close date:** 2004-08-30
- **Manufacturer:** VAN HOOL,  N.V. (*)
- **Affected makes:** VAN HOOL
- **Affected components:** SERVICE BRAKES, AIR
- **Affected model years:** 2000, 2001, 2002
- **Affected (make, year) variants:** 3
## Summary

THIS INVESTIGATION WAS OPENED TO EVALUATE VAN HOOL'S DECISION TO CONDUCT A FIELD SERVICE CAMPAIGN INSTEAD OF A SAFETY RECALL TO REPAIR THE SERVICE BRAKE AIR TANK MOUNTING BRACKETS THAT ARE FAILING.THIS TYPE OF FAILURE COULD RESULT IN THE LOSS OF AIR PRESSURE NECESSARY FOR PROPER SERVICE BRAKE APPLICATION.IN ADDITION, THERE IS THE POSSIBILITY THAT THE DETACHED AIR TANK COULD SEPARATE FROM THE BUS, STRIKING VEHICLES OPERATING BEHIND OR AROUND THE AFFECTED BUS.AS THE RESULT OF THE AGENCY?S INVESTIGATION INTO THIS MATTER, VAN HOOL HAS AGREED TO INITIATE A SAFETY RECALL CAMPAIGN AND MAKE NECESSARY REPAIRS TO THE AIR TANK MOUNTING SYSTEM OF 677 BUSES (MOTORCOACHES).THE ACTION TAKEN BY VAN HOOL IS SUFFICIENT TO RESOLVE THE ISSUES RAISED BY THIS INVESTIGATION.A COPY OF THE SAFETY RECALL IS ATTACHED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE04047)
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