Drum Brake System: Service Precautions

CAUTION: Failure to tighten lug nuts in a star pattern may result in high runout, which will speed up development of brake roughness, shudder and vibration.

WARNING: LUG NUTS MUST BE RETIGHTENED TO PROPER TORQUE SPECIFICATION AT 800 KM (500 MILES) OF NEW VEHICLE OPERATION. RETIGHTEN TO PROPER TORQUE SPECIFICATION AT 160 KM (100 MILES) AND ALSO AT 800 KM (500 MILES) OF NEW OPERATION. RETIGHTEN TO PROPER TORQUE SPECIFICATIONS AT 800 KM (500 MILES) AFTER ANY WHEEL CHANGE OR ANY OTHER TIME THE LUG NUTS HAVE BEEN LOOSENED. IMPROPERLY TIGHTENED LUG NUTS COULD ALLOW THE WHEEL TO COME OFF WHILE THE VEHICLE IS IN MOTION, CAUSING LOSS OF CONTROL.

WARNING: REPLACE WHEELS IF THEY ARE BENT, CRACKED, LEAKING AIR OR HEAVILY RUSTED OR IF THE LUG NUTS OFTEN BECOME LOOSE. DO NOT USE BENT WHEELS THAT HAVE BEEN STRAIGHTENED AND DO NOT USE INNER TUBES IN LEAKING WHEELS. DO NOT REPLACE WHEELS WITH USED WHEELS. WHEELS THAT HAVE BEEN STRAIGHTENED, ARE LEAKING AIR OR ARE USED MAY HAVE STRUCTURAL DAMAGE AND COULD FAIL WITHOUT WARNING. CHECK FOR DAMAGE THAT COULD AFFECT THE RUNOUT OF THE WHEELS. WOBBLE OR SHIMMY WILL EVENTUALLY DAMAGE THE WHEEL BEARINGS.

CAUTION: To prevent damage to wheel stud threads, do not use power or impact-type tools. Tighten lug nuts to specification with a torque wrench. Tighten lug nuts to 115-142 Nm (85-104 ft. lbs.). Rotunda Accutorq Lug Nut Socket or equivalent on a 1/2 inch air impact wrench can be used instead of a torque wrench.