2022 GLA220 H247 8G-DCT Wet Dual Clutch Automatic Transmission Assembly
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Overview: MERCEDES-BENZ's transverse 8-speed dual-clutch transmission with integrated electromechanical actuation.
Key Features:
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Wet Clutch System: Dual 7-plate clutch packs (0.5mm runout tolerance)
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Torque Capacity: 400Nm (optimized for M260 2.0L turbo)
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Mechatronic Unit: Direct-mounted TCU with predictive shift strategy
Failure Modes:
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Clutch Contamination: Degraded MB 236.21 fluid causes shudder (P0730)
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Valve Body Wear: Shift solenoids stick in cold (delayed 1-2 shifts)
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Input Shaft Bearing Failure: Metal debris in fluid (whining noise)
Critical Service Notes:
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Fluid Specification: MB 236.21 ONLY (5.8L capacity)
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Adaptation Reset: Required after clutch service (XENTRY mandatory)
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Clutch Runout Check: >0.3mm requires pack replacement
Pro Tip: Monitor "clutch adaptation values" in XENTRY – exceeding ±15% indicates wear.

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8G-DCT Automatic Transmission Assembly
,Wet Dual Clutch Automatic Transmission Assembly
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