Crankshaft Rear Seal with Retainer Plate: Installation

WARNING: This page is about a different variant/trim than selected.

Lubricate the crankshaft rear seal lips with clean engine oil.

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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)
2. 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)
3. 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)
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- Position the special tool 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 tool and into the installed position.
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Install the crankshaft rear seal retainer plate bolts. Remove Special Service Tool: 303-1250 Seal Installer, Rear Main.
Torque: 89 lb.in (10 Nm)

Fig 1: Crankshaft Rear Seal Retainer Plate Bolts Tightening Sequence
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1. Install the CKP sensor and the bolt.
  Torque: 89 lb.in (10 Nm)
2. Connect the CKP sensor electrical connector.
3. Position the insulator.
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Install the crankshaft sensor ring.

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Install the flexplate. Refer to: Flexplate 2.7L EcoBoost .