Lincoln Aviator 2020-2021 Service Manual / Powertrain / Engine / Engine - 3.0L EcoBoost / Removal and Installation - Crankshaft Rear Seal with Retainer Plate

Lincoln Aviator: Engine - 3.0L EcoBoost / Removal and Installation - Crankshaft Rear Seal with Retainer Plate

Special Tool(s) / General Equipment

303-1250
Seal Installer, Rear Main
TKIT-2006UFFLM
Plastic Scraper

Materials

Name Specification
Motorcraft® High Performance Engine RTV Silicone
TA-357
WSE-M4G323-A6
 
Motorcraft® Silicone Gasket Remover
ZC-30-A
-
 
Motorcraft® Metal Surface Prep Wipes
ZC-31-B
-
 
Motorcraft® Metal Brake Parts Cleaner
PM-4-A, PM-4-B
-
 

Removal

  1. Remove the flexplate.
    Refer to: Flexplate (303-01A Engine - 3.0L EcoBoost, Removal and Installation).
  1. Remove the crankshaft sensor ring.
  1. Inspect the crankshaft sensor ring for damage. If the crankshaft sensor ring has been dropped or has any visual damage, it must be discarded.
  1. Remove the nut and the heat shield.
    1. Disconnect the CKP sensor electrical connector.
    1. Remove the stud bolt and the CKP sensor.

  1. Remove the bolts and the crankshaft rear seal and retainer plate.
    • Discard the crankshaft rear seal and retainer plate.
  1. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.

    Clean and inspect the mating surface.
    Refer to: RTV Sealing Surface Cleaning and Preparation (303-00 Engine System - General Information, General Procedures).
    Use the General Equipment: Plastic Scraper
    Material: Motorcraft® Silicone Gasket Remover / ZC-30-A
    Material: Motorcraft® Metal Brake Parts Cleaner / PM-4-A, PM-4-B
    Material: Motorcraft® Metal Surface Prep Wipes / ZC-31-B

Installation

  1. Lubricate the crankshaft rear seal lips with clean engine oil.
  1. NOTE: The crankshaft rear seal and retainer plate must be installed within 10 minutes of applying the sealer and the bolts must be installed and tightened to 2-5 Nm (18-44 lb-in) within 15 of applying the sealer. Final tightening of the bolts must be completed within 60 minutes of applying the sealer. Failure to follow this procedure can cause future oil leakage.

    1. Apply a 4.5 mm (0.18 in) bead of Motorcraft® High Performance Engine RTV Silicone to the crankshaft rear seal and retainer plate.
      Material: Motorcraft® High Performance Engine RTV Silicone / TA-357 (WSE-M4G323-A6)
    1. Overlap the beginning and ending of the sealant bead 15 mm (0.59 in).
      Material: Motorcraft® High Performance Engine RTV Silicone / TA-357 (WSE-M4G323-A6)
    1. Apply 9 mm (0.35 in) beads of Motorcraft® High Performance Engine RTV Silicone that are 10 mm (0.40 in) in length as indicated in the graphic.
      Material: Motorcraft® High Performance Engine RTV Silicone / TA-357 (WSE-M4G323-A6)
  1. NOTICE: The special tool must be inserted into the rear of the crankshaft seal to prevent the seal lip from rolling backwards.

    1. Insert the magnetic base of the special tool into the rear opening of the crankshaft seal.
      Install Special Service Tool: 303-1250  Seal Installer, Rear Main.
    1. The magnetic base of the special tool should protrude slightly from the front of the seal plate
    • Position the special tool and seal plate onto the end of the crankshaft.
      Use Special Service Tool: 303-1250  Seal Installer, Rear Main.
    • Slide the new crankshaft rear seal and retainer plate onto the crankshaft and into the installed position.
  1. Install the crankshaft rear seal retainer plate bolts.
    Remove Special Service Tool: 303-1250  Seal Installer, Rear Main.
    Torque: 89 lb.in (10 Nm)
    1. Install the CKP sensor and the stud bolt.
      Torque: 89 lb.in (10 Nm)
    1. Connect the CKP sensor electrical connector.
  1. Install the heat shield and the nut.
    Torque: 89 lb.in (10 Nm)
  1. Install the crankshaft sensor ring.
  1. Install the flexplate.
    Refer to: Flexplate (303-01A Engine - 3.0L EcoBoost, Removal and Installation).

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