# NHTSA Preliminary Evaluation PE86074
> **REAR SUSPENSION FAILURE** · Opened 1986-08-18 · Closed 1987-03-12
## Investigation
- **Action number:** PE86074
- **Type:** Preliminary Evaluation
- **Open date:** 1986-08-18
- **Close date:** 1987-03-12
- **Manufacturer:** Anvil Trailer
- **Affected makes:** COACHMEN; DAMON; DOLPHIN; FOUR SEASONS; GRANVILLE; HERITAGE; HUNTSMAN; KEYSTONE; MIRAGE; ODYSSEY; PERRIS VALLEY; RANGER; RBR; ROCKWOOD; SANDTANA; SUNLAND; SUNLINE; SUNRADER
- **Affected components:** SUSPENSION
- **Affected model years:** 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986
- **Affected (make, year) variants:** 155
## Summary

SUMMARY:INFORMATION WAS REQUESTED AND RECEIVED FROM THE FOLLOWING:MANUFACTURER CONTACT RECEIVED TOYOTA MOTOR CORPORATION 8/18/8611/10/86 NISSAN MOTOR CORPORATION 8/20/8610/31/86 GENERAL MOTORS CORPORATION 8/20/8610/31/86 FORD MOTOR COMPANY 8/20/8610/28/86 CHRYSLER CORPORATION12/11/86 2/06/87ANALYSIS: THE INFORMATION RECEIVED FROM THE VARIOUS CHASSIS SUPPLIERS INDICATES THAT THEY DO NOT SUPPORT LOADING A CHASSIS IN EXCESS OF THEIR ESTABLISHED GVWR AND WILL NOT NORMALLY WARRANT REPAIR.THE OEM MANUFACTURERS WOULD NOT ENDORSE THE MODIFICATIONS TO THEIR VEHICLES BY THE MICRO-MINI MOTORHOME MANUFACTURERS WITHOUT EXTENSIVE TESTING.PROPOSED ACTION: CLOSE THE PE, INFORMATION USED IN EXISTING EAS.===

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE86074)
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