Mack RD, DM +1 more: Not Entered

Affects Mack RD, DM, R · 1977–1978 — about 29 vehicles.

The hazard

TRUCKS EQUIPPED WITH EITHER AN SGPS47 OR SGP49 STEERING SYSTEM. AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED TO CLAMP THE STEERING SHAFT TO THE STEERING GEAR INPUT SHAFT. THS NUT COULD LOOSEN CAUSIG INPUT SHAFT LOOSENESS AND SPLINE WAEAR. CONTINUED OPERATION COULD RESULT IN STEERING SHAFT SEPARATION A D LOSS OF STEERING CONTROL.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational