OSHKOSH B SERIES 1984: SUSPENSION:MULTIPLE AXLE

General Information

NHTSA Campaign ID Number: 84V110000

Make Model Year
OSHKOSH B SERIES 1984
Date Owners Notified Date Received by ODI Date Added to Database
1984-09-14 1984-09-21 1984-10-10

Production Dates: 1977-11-01 - 1984-09-01

Manufacturers Involved: Oshkosh Corporation

Component: SUSPENSION:MULTIPLE AXLE

Potential Number Of Units Affected: 176

Report Initiator: MFR MFR Report

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.