gear box oil pump

1. Testing & Quality Control Process Raw Material Inspection : High-grade aluminum alloy and gear materials verified for strength and durability. Precision Machining : Pump housing and gears machined to exact OEM tolerances. Pressure & Flow Testing : Each oil pump is tested to meet factory pressure and flow rate requirements. Dimensional Verification : Key dimensions measured to ensure perfect fit in the transmission. Final Quality Control : Visual and functional inspection

QR025CHA CVT Oil Pump Assembly (P/N: 3028501101) – Chery Tiggo 4/7/8 Application Technical Verification: With 20 years of CVT expertise , our engineering team confirms this oil pump meets exact OEM specifications for Chery QR025CHA transmissions. Product Specifications: Direct replacement for P/N 3028501101 Complete pump assembly with housing and gears Compatible with Tiggo 4/7/8 models Pre-set pressure relief valve calibration Critical Features: • 12-tooth rotor design with

1. Product Overview This is a professionally tested used transmission oil pump , OE part number RF-F81P-7B324-AA , designed for the Ford E40D/4R100 automatic transmission . It is compatible with Ford F-350 models from 1999-2003 and 2017-2019. The oil pump is the heart of the transmission, providing pressurized fluid to lubricate gears, clutches, and valves, as well as powering hydraulic control systems. Manufactured to OEM specifications, this unit eliminates common issues

Typical Faults: Crescent Wear Symptom: Low line pressure (P0756/P0776 codes, delayed shifts) Cause: Abrasives score pump face (especially after torque converter failure) Drive Gear Spline Stripping Symptom: No movement in any gear (metal debris in pan) Cause: Torque converter hub wear transfers to pump Pressure Regulator Sticking Symptom: Erratic shifts or harsh engagements Trigger: Varnish buildup from degraded Dexron III Critical Measurements: Rotor Clearance: >0.15mm

Product Highlights: ✔ Direct Fit for GM 4L60E & 4L65E Transmissions – Precision-engineered to restore proper hydraulic pressure & fluid flow for smooth shifting.✔ OEM-Quality Construction – Heavy-duty gears, housing, and seals prevent pump failure, pressure loss, and premature wear .✔ Fixes Common Transmission Issues – Solves low pressure, delayed shifts, slipping gears, and whining noises caused by worn pumps.✔ Easy Bolt-On Installation – Matches factory specs; no modificati

1. Inspection & Testing Process Visual & Dimensional Inspection : The oil pump assembly is visually inspected for cracks, wear, and damage, with key dimensions measured to match factory specs. Deep Cleaning : The unit is thoroughly cleaned with professional equipment to remove oil, debris, and wear contaminants. Pressure Testing : The pump is tested on specialized equipment to verify oil pressure output under different conditions. Functional Testing : The pump’s gears, rotors

1. Inspection & Testing Process Visual & Dimensional Inspection : The oil pump assembly is visually inspected for cracks, wear, and damage, with key dimensions measured to match factory specs. Deep Cleaning : The unit is thoroughly cleaned with professional equipment to remove oil, debris, and wear contaminants. Pressure Testing : The pump is tested on specialized equipment to verify oil pressure output under different conditions. Functional Testing : The pump’s gears, rotors

1. Inspection & Testing Process Visual & Dimensional Inspection : The oil pump assembly is visually inspected for cracks, wear, and damage, with key dimensions measured to match factory specs. Deep Cleaning : The unit is thoroughly cleaned with professional equipment to remove oil, debris, and wear contaminants. Pressure Testing : The pump is tested on specialized equipment to verify oil pressure output under different conditions. Functional Testing : The pump’s gears, rotors

1. Testing & Quality Control Process Full Disassembly & Inspection : The pump is completely disassembled, and all components are visually and dimensionally inspected for wear, damage, and defects. Deep Cleaning : All components are ultrasonically cleaned to remove debris, sludge, and contaminants. Component Replacement : Worn gears, bearings, and seals are replaced with high-quality replacement parts. Assembly & Pressure Testing : The pump is reassembled and tested under