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Input Shaft Seal

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools

Illustration Tool Name Tool Number
GF0006327Courtesy of FORD MOTOR CO.
Adapter for 303-224 (Handle) 205-153 (T80T-4000-W)
GF0025485Courtesy of FORD MOTOR CO.
Installer, Driven Gear Oil Seal 308-427
GF0025486Courtesy of FORD MOTOR CO.
Installer, Halfshaft Oil Seal 308-429
Material

Item Specification
Silicone Gasket and Sealant
TA-30
WSE-M4G323-A4
Fig 1: Exploded View Of Power Transfer Unit Input Shaft Seal With Torque Specifications
GF0025487Courtesy of FORD MOTOR CO.
Item Part Number Description
1 7H469 Input shaft seal
2 - Helical drive gear (part of 7251)
3 - Helical idler gear (part of 7251)
4 - Helical driven gear (part of 7251)
5 - Power transfer unit (PTU) cover (part of 7251)
6 7251 PTU
7 W500425 PTU cover bolt (12 required)
8 7034 Vent tube
9 W707702 Vent tube bolt
10 7H429 Intermediate shaft seal
  1. Using the special tool, install the input shaft seal.
  2. Fig 2: Installing Input Shaft Seal
    GF0025488Courtesy of FORD MOTOR CO.
    NOTE: Make sure not to roll the inner input seal sealing lip when installing the drive gear.
  3. Install the helical gears.
    1. Install the drive gear. Use a slight rotation to prevent damaging the inner input seal.
    2. Install the idler gear.
    3. Install the driven gear.
  4. Fig 3: Drive Gear, Idler Gear & Driven Gear
    GF0025489Courtesy of FORD MOTOR CO.
    NOTE: The power transfer unit (PTU) cover and case sealing surfaces must be free of oil before applying new sealant.
  5. Apply a 3 mm (0.11 in) bead of silicone sealant to the sealing surface of the PTU cover. Install the PTU cover and tighten the 12 PTU cover bolts in a star pattern.
    • Tighten to 32 Nm (24 lb-ft).
  6. Install the vent tube and the bolt.
    • Tighten to 14 Nm (10 lb-ft).
  7. Using the special tools, install the intermediate shaft seal.
  8. Fig 4: Installing Intermediate Shaft Seal
    GF0025490Courtesy of FORD MOTOR CO.
  9. Install the PTU. For additional information, refer to Power Transfer Unit (PTU) - Automatic Transaxle .