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Home >> Subaru >> 2021 >> Forester Touring >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Symptoms And Causes >> Inspection

Symptoms And Causes: Inspection

CAUTION: If noise occurs, identify the cause before work.
Symptoms Problem parts etc. Possible cause
Noise when shifting from P range or N range or starting Hypoid gear set Excessive hypoid gear backlash
Drive pinion or companion flange Wear or damage at splines of drive pinion or companion flange
Self-locking nut securing the companion flange Loose self-locking nut
Front bearing or rear bearing Insufficient preload for front bearing or rear bearing
Thrust washer Excessive backlash between the differential bevel gear and differential bevel pinion
Differential bevel gear Wear or damage of the splines
Pinion gear or pinion shaft Wear or damage at connection of pinion gear and pinion shaft
Rear differential front member or rear differential mount bushing Excessive hardening or damage of rear differential front member and rear differential mount bushing
Noise when turning Differential bevel gear, differential bevel pinion Damaged gear
Pinion shaft Excessive wear or damage of pinion shaft
Thrust washer Excessive wear or damage of thrust washer
Noise when driving (under constant load) Each bearing Wear, damage or seizure of each bearing
Each gear Damage of each gear