Mercury E2DZ-7052-A Seal Assembly - Oil

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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.

Oil leaks can occur due to wear of the extension housing oil seal and bushing, as well as the speedometer drive gear oil seal and O-ring. These seals can be easily replaced without removing the transmission from the vehicle. The extension housing oil seal is located at the rear of the transmission where the driveshaft is attached. If leakage is suspected, the vehicle should be raised and supported securely on jackstands. The oil seal can be pried out of the transmission using a screwdriver or pry bar, or a special removal tool may be required. The new oil seal should be installed using a large socket or pipe as a drift. The splines of the transmission output shaft and the outside of the driveshaft sleeve yoke should be lubricated with lightweight grease before installing the driveshaft. The speedometer driven gear housing or vehicle speed sensor is located on the side of the extension housing. To remove it, the speedometer cable or electrical connector should be disconnected, and the hold-down bolt should be removed. The seal and O-ring can be checked for leaks by looking for transmission oil around the cable housing. The vacuum modulator O-ring can be replaced by removing the vacuum line, hold-down bolt, and modulator. The old O-ring should be removed and the new one should be coated with clean ATF before installation. The manual lever also has a seal, but it is recommended to take the vehicle to a qualified repair shop for replacement. To replace the manual lever seal, the shift linkage should be disconnected and the old seal should be pried out using a small hooked tool. The new seal should be driven into place using a deep socket and hammer. The shift linkage should be reconnected and adjusted before refilling the transmission. Finally, the vehicle can be lowered by removing the jackstands.

Oil leaks can occur due to wear of the extension housing oil seal and bushing, as well as the speedometer drive gear oil seal and O-ring. These seals can be easily replaced without removing the transmission from the vehicle. The extension housing oil seal is located at the rear of the transmission where the driveshaft is attached. If leakage is suspected, the vehicle should be raised and supported securely on jackstands. The oil seal can be pried out of the transmission using a screwdriver or pry bar, or a special removal tool may be required. The new oil seal should be installed using a large socket or pipe as a drift. The splines of the transmission output shaft and the outside of the driveshaft sleeve yoke should be lubricated with lightweight grease before installing the driveshaft. The speedometer driven gear housing or vehicle speed sensor is located on the side of the extension housing. To remove it, the speedometer cable or electrical connector should be disconnected, and the hold-down bolt should be removed. The seal and O-ring can be checked for leaks by looking for transmission oil around the cable housing. The vacuum modulator O-ring can be replaced by removing the vacuum line, hold-down bolt, and modulator. The old O-ring should be removed and the new one should be coated with clean ATF before installation. The manual lever also has a seal, but it is recommended to take the vehicle to a qualified repair shop for replacement. To replace the manual lever seal, the shift linkage should be disconnected and the old seal should be pried out using a small hooked tool. The new seal should be driven into place using a deep socket and hammer. The shift linkage should be reconnected and adjusted before refilling the transmission. Finally, the vehicle can be lowered by removing the jackstands.

To perform a fuel pressure test, follow these steps: 1. Obtain a fuel pressure gauge and adapter set (fuel line fittings). 2. Relieve the fuel pressure. 3. Lay a shop towel over any fuel connection to be disassembled to absorb the residual fuel. 4. 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). 5. If no sound is heard, check the fuel pump fuse, relay, and circuit. If the issue persists, there may be a problem in the fuel pump circuit or a faulty fuel pump. 6. 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. 7. If no voltage is present, check the fuses and wiring circuit. 8. For the operating pressure check, attach the fuel pressure gauge to the test port and activate the fuel pump without starting the engine. 9. Note the fuel pressure and measure it again with the engine idling. 10. Detach the vacuum hose from the fuel pressure regulator to check for an increase in pressure. 11. If pressure is too high or low, inspect and replace components accordingly.

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.

Swing it out of the way.

After removing the oil seal, inspect the oil seal contact surface on the case for any damage and clean it.

To replace the fuel pump, follow these steps:1. Remove the fuel pump/sending unit assembly from the vehicle carefully.2. Install a new rubber gasket during reassembly.3. 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 the transmission, follow these steps: 1. Raise the vehicle and support it securely on jackstands. 2. Locate the extension housing oil seal at the rear of the transmission where the driveshaft is attached. 3. Pry out the old oil seal using a screwdriver or pry bar. Alternatively, use a special removal tool if required. 4. Lubricate the splines of the transmission output shaft and the outside of the driveshaft sleeve yoke with lightweight grease. 5. Install the new oil seal using a large socket or pipe as a drift. 6. Before installing the driveshaft, ensure that the new oil seal is properly seated. 7. Lower the vehicle by removing the jackstands.