6R80 2010-2011 Ford Expedition, Lincoln Navigator 5.4L AWD/4WD – Remanufactured 6-Speed Automatic Trans

Description

Commanding 365 lb-ft of V8 torque across all four wheels through 250 PSI hydraulic circuits during municipal winter transit, this unit guarantees crisp gear engagement. Transport maintenance supervisors restore commercial vehicle function by procuring a Ford 6R80 Remanufactured Transmission engineered for 2010 to 2011 Ford Expedition and Lincoln Navigator 5.4L 4WD chassis.

High-strength A380 die-cast aluminum housing structures withstand continuous torsional flexing caused by heavy cargo box payloads. Rebuilt valve body units incorporate wear-resistant Sonnax sleeves that prevent hydraulic bypass under elevated thermal conditions. Carbon-metallic friction clutch discs feature radial oil channels that flush out hot fluid during repetitive stop-and-go driving. Dry transmission weight sits at 215 lbs with a 13.0-quart fluid capacity, utilizing dual 1/2-inch quick-connect cooler fittings.

Key Features of Ford 6R80

Delayed forward clutch apply caused by worn valve bores prompts municipal shuttle fleet managers to buy Ford 6R80 remanufactured transmission systems. Precision-machined hydraulic bores restore correct line pressures to eliminate shift flare and converter clutch shudder.

• Heat-treated 8620 steel planetary gears resist mechanical fatigue during extended city transit schedules.
• A steep 4.17:1 first gear ratio provides quick departure acceleration under full vehicle passenger weight.
• Precision-ground pump gears deliver constant 250 PSI fluid output to satisfy high-demand shift circuits.
• Commercial 6R80 4WD automatic transmission units maintain precise shifting behavior in all weather conditions.
• Billet accumulator pistons feature double O-rings that prevent internal pressure drops during downshifts.
• Continuous-feed lubrication ports pump fluid straight to high-load carrier thrust bearings.
• Multi-plate lockup torque converters minimize slip during steady-state suburban highway driving.

Fluid Dynamics Forward Gear Multiplying

Active line pressures hold between 180 and 250 PSI to maintain solid clutch clamping during vehicle acceleration. Operating transmission fluid temperatures remain between 165°F and 190°F across grueling multi-drop delivery schedules. Engine rotational torque supports 365 lb-ft at 3750 RPM without internal gear slip. Vehicle cooling systems discharge up to 1100 BTU per minute through high-efficiency external fluid coolers. Mechanical gear reductions step through 4.17:1 in first, 2.34:1 in second, 1.52:1 in third, 1.14:1 in fourth, 0.87:1 in fifth, down to 0.69:1 in sixth.

Driveline Fitment Shaft Tolerances Matrix

Interfacing straight with the four-wheel drive transfer case input hub, the induction-hardened output shaft delivers smooth power transmission. Shaft runout checks across the entire length hold within 0.0024 inches total indicator reading. An internal mechanical parking pawl locks against the case with 1250 lb-ft of holding torque on steep municipal inclines.

Control Calibration Service Protocol Standards

Calibrate TCM clutch pressure adaptation values via a dealer-level diagnostic computer before entering commercial service. This transmission is not engineered for track drag racing, extreme rock crawling, or gross combined vehicle weights exceeding factory chassis tow limits. Each shift confirm normal torque converter clutch lockup during initial route transit. Every 30 days check fluid level and inspect exterior cooler lines for leaks. At 30,000 miles drop the oil pan to install fresh fluid and a new pan filter.

Warranty Agreement Delivery Inventory Scope

Commercial transport operations are protected by a comprehensive 3-Year / 100,000-Mile commercial fleet warranty on drivetrain components. Crated shipments contain the fully rebuilt transmission unit, a balanced torque converter, cooler connection O-rings, dynamometer test reports, and an installation handbook.