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Mack R Recall 90V052: Steering:Gear Box:Shaft Sector

NHTSA campaign 90V052, reported March 16, 1990, 267 vehicles potentially affected.

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The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 90V052MACK TRUCKS, INCORPORATED
Component
STEERING:GEAR BOX:SHAFT SECTOR
Problem
INTERFERENCE BETWEEN STEERING GEAR SECTOR SHAFT AND THE FRAME RAIL THROUGH HOLE CAN CAUSE SECTOR SHAFT WEAR AND CAN WEAKEN SHAFT CAUSE IT TO BREAK.
Risk
SHAFT FAILURE DURING VEHICLE OPERATION WOULD CAUSE LOSS OF STEERING CONTROL AND A CRASH WITHOUT PRIOR WARNING.
Remedy
ENLARGE FRAME RAIL THROUGH HOLE TO PREVENT INTERFERENCE: REPLACE STEERING GEAR SECTOR SHAFT IF SCORED.
Notes
SYSTEM: STEERING GEAR SECTOR SHAFT.VEHICLE DESCRIPTION: HEAVY-DUTY TRUCKS.

Affected vehicles

Mack R1989
Mack RB1989
Mack RD1989