09G 09M 09K AWTF60SN Transmission Mechanical Oil Pump Assembly GEN1
The transmission mechanical oil pump is the hydraulic heart of automatic transmissions. Key points:
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Function – Generates ATF pressure (20-100+ psi) for lubrication, cooling, and clutch/valve body actuation.
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Types – Gear rotor (gerotor), crescent, or vane pumps; driven by torque converter or input shaft.
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Failure Modes
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Wear: Pump gears/vanes degrade from contamination (metal debris).
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Seal leaks: Causes low pressure (P0841/P0868 codes, delayed shifts).
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Cavitation: Aerated fluid from clogged filters (whining noise).
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Critical Specs – Clearance <0.1mm (rotor-to-housing); always prime during installation.



Transmission Mechanical Oil Pump Assembly
,AWTF60SN Transmission Mechanical Oil Pump
,09M Transmission Mechanical Oil Pump
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