Brand Name:
Toyota
Model Number:
U760E;U760F;U761E;U761F
Function: Central torque distributor in Toyota/Lexus 6-speed FWD planetary gearset, enabling 5th/6th gear ratios.
Key Features:
Material: Case-hardened alloy steel (HRC 58-62) with ground helical teeth
Spline Design: Micro-polished internal splines for reduced wear against input shaft
Thrust Control: Integrated washer surface (critical for axial play adjustment)
Failure Modes:
Spline Stripping: Causes gear spin (sudden 5-6 shift flare, P2716 codes)
Tooth Pitting: Fatigue from high-mileage overdrive use (whining noise)
Bearing Surface Wear: Alters planetary alignment (>0.15mm wear = replace)
Critical Specs:
Sun gear axial play: 0.10-0.25mm (requires selective thrust washers)
Backlash with pinions: 0.07-0.13mm
Pro Tip: Always replace sun gear and planetary carrier as matched set – mismatched wear patterns cause premature failure.
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