Vehicle recall 79V059000 · February 23, 1979
1978 Kenworth W900
The parking brake valves may have been incorrectly piped.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- The parking brake valves may have been incorrectly piped. If the parking brake piping is incorrectly routed, there is no way to set the tractor parking brakes independently of the trailer parking brakes. This could cause the parking brakes to back off while the trailer air supply is being charged, causing the tractor to roll.
- Remedy
- Trailer air supply will be moved from the discharge side of the tractor parking valve to the discharge side of the combination parking valve. This service will be done at no charge.
- Notes
- Vehicle description: trucks.system: parking emergency brakes; air, valve, control.consequences of defect: if the tractor and trailer roll free, a vehicleaccident and personal injury may occur.
Recall details
- NHTSA campaign
- 79V059000
- Reported to NHTSA
- February 23, 1979
- Filed by
- PACCAR, INCORPORATED
- Owner notification
- February 15, 1979
- Vehicles potentially affected
- 2,620
- Initiated by
- the manufacturer
- Components
- Parking brake › Driveline › Air
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Kenworth W900 (1978): 1978
Has your Kenworth been repaired?
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