Genuine Ford F-250 Transfer Case Seal

Ford F-250 Transfer Case Seal Parts Questions & Answers

• Seal Assembly - Oil
  F6TZ-7052-A
  Q: How to remove and replace the rear transfer case output shaft seal on a Ford F-250?

  A: Raise the vehicle and support it securely on jackstands. Drain the transaxle fluid if the filler plug is higher than the lowest part of the seal to prevent fluid loss during seal removal. Mark the rear driveshaft to transfer case yoke orientation, remove the driveshaft from the yoke and swing it out of the way. Remove the driveshaft at the rear axle and slide the driveshaft out of the transfer case extension housing. Hold the rear yoke with a suitable tool and remove the center retaining nut. Remove the yoke nut and washer. Remove the yoke and slinger from the transfer case rear output shaft. Remove early model non-flanged seals with a slide-hammer and adapter or carefully pry the seal out of the case bore with a blunt screwdriver. Remove later model flanged seals using a seal remover and slide hammer or tap out an edge of the seal using a dull screwdriver. Inspect the oil seal contact surface on the case for scoring or burrs and remove them with emery cloth or fine sandpaper. Apply multi-purpose grease to the oil seal and position it squarely into the case bore. Drive the seal squarely into the bore using an appropriately sized seal driver, large socket, or pipe section. Clean the yoke splines and lubricate lightly with multi-purpose grease, then slip the slinger and yoke over the output shaft and carefully past the new seal until it bottoms. Coat the face of the yoke retaining nut with RTV sealant and apply thread locking compound to the threads. Install the rubber seal, washer, and yoke retaining nut onto the output shaft. Tighten the retaining nut to the torque. Install the rear driveshaft. Check and refill the transfer case lubricant as necessary. Remove the jackstands and lower the vehicle. Shift out of 4WD and unlock hubs before returning the vehicle to normal service.
• Seal Assembly - Oil
  D5AZ-7052-A
  Q: How to replace a extension housing oil seal?

  A: To perform the fuel pressure test, obtain a fuel pressure gauge and adapter set (fuel line fittings). After relieving the fuel pressure, lay a shop towel over any fuel connection to be disassembled to absorb the residual fuel. For the preliminary inspection, check the fuel system's delivery by listening at the fuel filler opening while an assistant turns the ignition key to the On position (engine not running). If no sound is heard, check the fuel pump fuse, relay, and circuit. If there's still no sound, there may be a problem in the fuel pump circuit or a faulty fuel pump. Check for battery voltage to the fuel pump relay connector and power relay connector. If present, have the relays tested at a qualified automotive repair shop. If no voltage is present, check the fuses and wiring circuit. For the operating pressure check, attach the fuel pressure gauge to the test port and activate the fuel pump without starting the engine. Note the fuel pressure and measure it again with the engine idling. Detach the vacuum hose from the fuel pressure regulator to check for an increase in pressure. If pressure is too high or low, inspect and replace components accordingly. For fuel pump replacement, remove the fuel pump/sending unit assembly from the vehicle carefully and install a new rubber gasket during reassembly. Adjust the angle and travel distance if the float arm and float wire loop were damaged during removal and installation. To replace the extension housing oil seal on 2WD models, raise the vehicle on jackstands, remove the driveshaft, flange/yoke nut, and washer, then remove the dust shield. Carefully pry out the old oil seal and bushing, using a special removal tool if needed. Install the new oil seal, reinstall the dust shield, and reassemble the driveshaft, flange/yoke, and nut. Lubricate the splines and driveshaft sleeve yoke, then install the driveshaft and lower the vehicle.
• Seal
  E7TZ-7B215-B
  Q: How to remove front transfer case output shaft seal?

  A: To remove the oil seal, start by raising the vehicle and supporting it securely on jackstands. If the filler plug is higher than the lowest part of the seal, drain the transaxle to prevent fluid loss. Mark the front driveshaft to transfer case yoke orientation, remove the driveshaft, and swing it out of the way. Hold the yoke with a suitable tool and remove the yoke retaining nut. Remove the front output shaft yoke nut, washer, and rubber seal if applicable. Take out the yoke and slinger from the transfer case output shaft. Remove the seal using a slide-hammer and adapter or by carefully prying it out with a blunt screwdriver. Inspect the oil seal contact surface on the case for any damage and clean it. To replace the seal, apply multi-purpose grease and position it squarely into the case bore with the markings facing outwards. Drive the seal into the bore using an appropriately sized seal driver or equivalent tool. Clean and lightly lubricate the yoke splines, then slip the slinger and yoke over the output shaft and past the new seal until it bottoms. Coat the face of the yoke retaining nut with RTV sealant and apply thread locking compound to the threads. Install the rubber seal, washer, and yoke retaining nut onto the output shaft, tightening it to the specified torque. Install the front driveshaft, refill the transfer case lubricant, and lower the vehicle. If necessary, shift out of 4WD mode before returning the vehicle to normal service.