# NHTSA Preliminary Evaluation PE86061
> **DEFECTIVE CASTLE NUT** · Opened 1986-06-23 · Closed 1986-09-04
## Investigation
- **Action number:** PE86061
- **Type:** Preliminary Evaluation
- **Open date:** 1986-06-23
- **Close date:** 1986-09-04
- **Manufacturer:** DANA CORPORATION
- **Affected makes:** DANA
- **Affected components:** STEERING:LINKAGES:ARM:IDLER AND ATTACHMENT
- **Affected model years:** 9999
- **Affected (make, year) variants:** 1
## Summary

SUMMARY OF INFORMATION FROM MANUFACTURER:NONEANALYSIS:INSTALLATION OF AN IDLER ARM ASSEMBLY WITHOUT A COTTER PININSTALLED IN THE CASTLE NUT MAY RESULT IN THE CASTLE NUT SEPARATING, WHICHCOULD LEAD TO THE IDLER ARM SEPARATING FROM THE DRAG LINK, AND LOSS OFSTEERING CONTROL OF THE VEHICLE.PROPOSED ACTION:OPEN A PE.SEND A IR.

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE86061)
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