R: STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM

Go Back To 1974 MACK TRUCKS, INC Directory

NHTSA Campaign Number:	78V171000
Vehicle/Equipment Make:	MACK
Vehicle/Equipment Model:	R
Model Year:	1974
Manufacturer Campaign Number:
Manufacturer Component Description:	STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
Manufacturers Involved in Recall:	MACK TRUCKS, INCORPORATED
Manufacturered:	-
Type of Report:	V (Vehicle, Equipment or Tire)
Potential Number of Units Affected:	2100
Date Owner Notified By Manufacturer:	19790810
Recall Initiated By:	19790810
Manufacturer Responsible For Recall:	MACK TRUCKS, INC
Report Received Date:	19780808
Record Creation Date:	19791012
Regulation Part Number:
Federal Motor Vehicle Safety Standard Number:
Defect Summary:	DEFICIENCIES, IN THE FORM OF FORGING LAPS, CRACKS AND EXCESSIVE DECARBURIZATION DURING HEAT TREATMENT, EXIST IN THE STEERING KNUCKLES. STRESSES IMPOSED WITH INTEGRAL HYDRAULIC POWER STEERING MAY LEAD TO A FAILURE IN THE AREA OF THE STEERING ARM ATTACHING BOSS. THIS TYPE OF FAILURE WOULD CAUSE LOSS OF STEERING CONTROL.
Consequence Summary:
Corrective Summary:	DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE LEFT STEERING KNUCKLE WITH AN IMPROVED TYPE OF KNUCKLE.

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