1978 Oshkosh B Series Recalls

---

NHTSA Campaign Number: 91V089000
Manufacturer: OSHKOSH CORPORATION
Manufactured Begin Date: June 1st, 1975
Manufactured End Date: June 1st, 1990
Date of Owner Notification: August 2nd, 1991

Defect Summary:
STEP TREAD WAS DESIGNED WITH AN UPTURNED EDGE. ALSO, INCORRECT BOLTS WERE USED TO ATTACH THE STEPS TO VEHICLE; INCORRECT BOLTS MAY FATIGUE AND BREAK ALLOWING THE STEPS TO SEPARATE FROM CAB.

Consequence Summary:
PERSONS EXITING THE CAB CAN TRIP AND FALL ON UPTURNEDEDGES. ALSO, FATIGUE OR BROKEN BOLTS COULD CAUSE THE STEPS TO BREAK AWAY AT THETIME THAT A PERSON IS ENTERING OR EXITING THE VEHICLES.

Corrective Summary:
REPLACE INCORRECTLY DESIGNED STEPS, REPLACE INCORRECT BOLTS.

Recall Notes:
SYSTEM: CAB STEPS.VEHICLE DESCRIPTION: HEAVY TRUCKS.

---

NHTSA Campaign Number: 84V110000
Manufacturer: OSHKOSH CORPORATION
Manufactured Begin Date: November 1st, 1977
Manufactured End Date: September 1st, 1984
Date of Owner Notification: September 14th, 1984

Defect 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.

Corrective Summary:
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.

Recall 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.

---

NHTSA Campaign Number: 80V078000
Manufacturer: OSHKOSH CORPORATION
Manufactured Begin Date: March 1st, 1978
Manufactured End Date: December 1st, 1979
Date of Owner Notification: May 30th, 1980

Defect Summary:
THE FRONT BRAKE ASSEMBLIES INSTALLED ON CERTAIN VEHICLES MAY HAVE BEEN INCORRECTLY ASSEMBLED. THIS DEFECT WILL RESULT IN A DEGRADED BRAKE EFFICIENCY.

Corrective Summary:
DEALER WILL INSPECT AND, IF NECESSARY, INSTALL A COMPLETE NEW WEDGE ASSEMBLY WITHOUT CHARGE TO OWNER.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: SERVICE BRAKES; FRONT AIR BRAKE ASSEMBLY.CONSEQUENCES OF DEFECT: THIS CONDITION INCREASES THE DISTANCE REQUIRED TO STOPTHE VEHICLE. AN ACCIDENT COULD RESULT, ESPECIALLY IN SITUATIONS REQUIRING AMINIMUM STOPPING DISTANCE.

---

NHTSA Campaign Number: 80V012000
Manufacturer: OSHKOSH CORPORATION
Manufactured Begin Date: August 1st, 1974
Manufactured End Date: December 1st, 1979
Date of Owner Notification: January 31st, 1980

Defect Summary:
IN SOME VEHICLES, CRACKS MAY DEVELOP IN THE SHEET METAL AROUND THE WINDSHIELD OPENING. CONTINUED VEHICLE OPERATION COULD RESULT IN PROGRESSIVE DAMAGE TO THE CAB.

Corrective Summary:
THE DEALER WILL INSTALL A WINDOW RETENTION KIT FREE OF CHARGE.

Recall Notes:
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: VISUAL; WINDSHIELD SHEET METAL.CONSEQUENCES OF DEFECT: THIS DAMAGE COULD ALLOW THE WINDSHIELD GLASS TO BLOWINWARD OR FALL OUTWARD FROM THE WINDSHIELD OPENING, RESULTING IN INJURY TODRIVER, LOSS OF VEHICLE CONTROL AND AN ACCIDENT.