Guangzhou Meishun Automatic Transmission Co., Ltd.
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As an automatic transmission expert, I'll analyze the most common failure modes of the 6T30 Low/Reverse One-Way Clutch (OWC) Hub:
Wear/Galling on Inner Race Contact Surface
The hub's inner race (where the rollers/sprags engage) often develops excessive wear or scoring due to:
Contaminated ATF (lack of maintenance)
Hard engagement shocks (aggressive driving)
Poor lubrication (clogged passages)
Roller/Sprag Bore Damage
The hub's bore (holding rollers/sprags) can become ovalized or develop grooves, preventing proper OWC locking.
Causes: Overloading, misalignment, or poor heat treatment.
Retainer Spring Fatigue/Fracture
The spring that maintains roller/sprag tension weakens or breaks, causing:
Intermittent engagement (delayed reverse)
Complete failure (no low/reverse)
