10R60 10-speed Automatic Transmission Mechanical Oil Pump Assembly

Function: Generates hydraulic pressure (80-150 psi) to actuate clutches, lubricate components, and cool the transmission. Driven by the torque converter or input shaft.

Key Components:

• Gear Types: Gerotor (most common), crescent, or vane pump designs.

• Critical Parts: Pump housing, inner/outer rotors, pressure relief valve, and seals.

Failure Modes:

• Wear: Contaminated ATF causes rotor scoring (low pressure → P0841/P0868 codes).

• Cavitation: Air ingestion from clogged filter (whining noise, erratic shifts).

• Seal Failure: Internal leaks reduce line pressure (delayed engagement).