1984 Mack Cf Recalls

---

NHTSA Campaign Number: 91V070000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: December 1st, 1967
Manufactured End Date: December 1st, 1990
Date of Owner Notification: June 23rd, 1992

Defect Summary:
STRESSES IMPOSED ON THE LEVER DURING TURNING MANEUVERS AND/OR IMPACT INCIDENTS, SUCH AS WOULD BE CAUSED BY CURBS OR ROAD SURFACE IRREGULARITY, REDUCE THE LIFE EXPECTANCY OF THE PART. THE STEERING LEVER MAY CRACK AND EVENTUALLY THE STRESSES COULD CAUSE THE STEERING LEVER TO BREAK.

Consequence Summary:
A BROKEN STEERING LEVER WILL CAUSE LOSS OF STEERINGCONTROL WITHOUT PRIOR WARNING WHICH MAY RESULT IN A VEHICLE CRASH.

Corrective Summary:
REPLACE THE DEFECTIVE STEERING ARMS.

Recall Notes:
SYSTEM: STEERING LEVERS.VEHICLE DESCRIPTION: CF MODEL FIRE CHASSIS WITH GROSS AXLE WEIGHT RATINGS OF12,000 POUNDS OR GREATER AND EQUIPPED WITH POWER STEERING.NOTE: THE SPECIFIC MACK AXLES AFFECTED ARE: FA532, FAF532, FAFW537, FAFW5372,FAFW13.5, FAW538, FAW14.3, FA604, FA6042, FAW616, FAW618, FAW617, AND FAW20.

---

NHTSA Campaign Number: 86V070000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: March 1st, 1984
Manufactured End Date: January 1st, 1986
Date of Owner Notification: November 5th, 1986

Defect Summary:
AN INCORRECT STEERING SHAFT RETAINING NUT IS INSTALLED ON THE SHAFT AND CAN LOOSEN CAUSING STEERING PLAY. CONSEQUENCE OF DEFECTS: IF NUT IS NOT REPLACED, STEERING WHEEL DISENGAGEMENT COULD OCCUR CAUSING LOSS OF STEERING CONTROL AND POSSIBLY A VEHICLE CRASH.

Corrective Summary:
INSTALL PROPER NUT TO ENSURE STEERING WHEEL RETENTION.

Recall Notes:
SYSTEM: STEERING WHEEL RETAINING NUT. VEHICLE DESCRIPTION: CF MODEL FIRE APPARATUS.

---

NHTSA Campaign Number: 85V157000
Manufacturer: Mack Trucks, Inc.
Manufactured Begin Date: June 1st, 1973
Manufactured End Date: October 1st, 1985
Date of Owner Notification: August 27th, 1986

Defect Summary:
THE SPLINED STEERING SHAFT MAY NOT BE SUFFICIENTLY ENGAGED AS DESIGNED DUE TO INACCURATE DRILLING OF THE HOLES IN THE FRAME TO WHICH THE CAB FRONT MOUNT MEMBER IS BOLTED. UNDER CERTAIN CONDITIONS THE STEERING SHAFT MAY DISENGAGE. CONSEQUENCE OF DEFECT: A JARRING IMPACT MIGHT CAUSE DISENGAMENT OF THE SPLINED SHAFT RESULTING IN LOSS OF STEERING CONTROL AND POSSIBLY AN ACCIDENT.

Corrective Summary:
REPLACE SHAFTS WHICH MEASURE UNDER THE MINIMUM ENGAGEMENT DIMENSIONS WITH LONGER SHAFT.

Recall Notes:
SYSTEM: STEERING SHAFT. VEHICLE DESCRIPTION: FIRE TRUCKS.