# NHTSA Preliminary Evaluation PE89141
> **DRUM BRAKE FAILURE** · Opened 1989-07-03 · Closed 1989-08-21
## Investigation
- **Action number:** PE89141
- **Type:** Preliminary Evaluation
- **Open date:** 1989-07-03
- **Close date:** 1989-08-21
- **Manufacturer:** ATHEY PRODUCTS CORP.
- **Affected makes:** ATHEY
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 9999
- **Affected (make, year) variants:** 2
## Summary

SUMMARY:ATHEY PUBLISHED A SERVICE BULLETIN DESCRIBING A DRUM TO DISCBRAKE CONVERSION.A CHECK OF THE ODI DATA BASE REVEALED A COMPLAINTPERTAINING TO FOUR UNITS WHICH HAD EXPERIENCED SEVERE BRAKE PROBLEMS,SUCH AS BLOWN WHEEL CYLINDERS, PREMATURELY WORN BRAKE SHOES, AND BROKENWHEEL CYLINDER PUSH RODS.THE FLEET OWNER CLAIMS THE PRESCRIBED REPAIRIS SAFETY RELATED.THE PROBLEM WARRANTS FURTHER INVESTIGATION.===

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE89141)
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