Vehicle recall 84V110000 · September 21, 1984

Oshkosh B Series and S-Series

These trucks were equipped with defective hydraulic pressure switches in the load span tag system.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: These trucks were equipped with defective hydraulic pressure switches in the load span tag system. When a malfunction in this system occurs, axle to pavement pressure increases when vehicle is operated in an unloaded condition.
Remedy: The existing control switch will be replaced with a three-position switch which, by use of a neutral position, will preve nt pressure buildup. A new operation label will also be included.
Notes: Vehicle description: heavy trucks equipped with "load span tag axles".system: suspension; tag axle.consequences of defect: this increase in pressure can reduce braking power andsteering control, possibly resulting in an accident.

Recall details

NHTSA campaign: 84V110000
Reported to NHTSA: September 21, 1984
Filed by: OSHKOSH TRUCK CORPORATION
Owner notification: September 14, 1984
Vehicles potentially affected: 176
Initiated by: the manufacturer
Components: Suspension › Multiple axle

Recall 84V110000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Oshkosh B Series (1978-1984): 1984, 1983, 1982, 1981, 1980, 1979, 1978
Oshkosh S-Series (1978-1984): 1984, 1983, 1982, 1981, 1980, 1979, 1978

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