45RFE 545RFE Automatic Transmission Mechanical Oil Pump For 2012 Jeep Grand Cherokee
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Function: Generates hydraulic pressure (90-150 psi) for clutch/band operation and lubrication in Jeep/Dodge RWD applications.
Key Features:
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Gear Type: Crescent pump design with cast aluminum housing (OEM 05015851AB).
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Critical Specs: 0.05-0.10mm gear-to-housing clearance; relief valve calibrated to 160 psi.
Failure Modes:
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Crescent Wear: Abrasives score pump face (low pressure → P1762/P2769 codes).
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Seal Hardening: ATF+4 breakdown causes internal leaks (slow 3-4 shifts).
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Drive Gear Spline Stripping: Torque converter hub wear transfers to pump.
Pro Tip: Replace both pump and TC if metal debris is present – 545RFE’s dual-stage relief valve is contamination-sensitive.
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Mechanical 45RFE Transmission Oil Pump
,Mechanical Automatic Transmission Oil Pump
,Mechanical 545RFE Transmission Oil Pump
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