# NHTSA Preliminary Evaluation PE01020
> **FRACTURES OF MAIN FRAME** · Opened 2001-06-25 · Closed 2001-09-13
## Investigation
- **Action number:** PE01020
- **Type:** Preliminary Evaluation
- **Open date:** 2001-06-25
- **Close date:** 2001-09-13
- **Manufacturer:** Lufkin Industries, Inc.
- **Affected makes:** LUFKIN
- **Affected components:** STRUCTURE
- **Affected model years:** 1998, 1999, 2000, 2001
- **Affected (make, year) variants:** 4
## Summary

ALLEGED THAT THE MAIN FRAME CROSS-MEMBER CLOSEST TO THE FIFTH WHEEL CONNECTION CRACKS AWAY FROM THE MAIN FRAME

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE01020)
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