TM 10-3930-669-34 3.  DRIVE AXLE NOISE GREATER DURING COAST THAN UNDER POWER (CONT.). KNOWN INFO Pinion nut torque OK. POSSIBLE PROBLEMS Ring     gear     and     pinion     assembly faulty. TEST OPTIONS Visual inspection. REASON FOR QUESTION If ring gear is faulty drive axle will be noisier during coasting than under power. KNOWN INFO Pinion ring nut torque OK Ring gear and pinion assembly OK. POSSIBLE PROBLEMS TEST OPTIONS Verify repair. REASON FOR QUESTION If drive axle is nit noisier during coating than under power, fault has been corrected. (Para 10-2). 2-82 (Para 10-4).