F 550 4WD Super Duty V10-6.8L (2009)
All vehicles
6. Install the axle shaft snap ring.
7. NOTE: Any time the hublock is removed, a new O-ring seal must be installed. Failure to do so can cause a vacuum leak and loss of 4WD
functions.
Install a new hublock O-ring seal.
8. NOTICE: The service replacement kit includes 2 O-ring seals; one for testing the hublock assembly and one for reassembly into the wheel
hub. DO NOT REUSE O-RING SEALS or hublock failure may occur.
NOTE: Always check the vacuum leak rate of the wheel end assembly when repairing or diagnosing the axle, wheel end or hublock performance.
Install a new hublock gasket, then install the hublock in the following sequence.
1. Rotate the hublock dial clockwise to the lock position. Apply the specified grease to the inner and outer splines.
2. Insert the hublock into the wheel hub while slowly turning the wheel hub to align the splines. Lift/jiggle the axle U-joint while pushing the
hublock into the wheel hub.
9. Install new hublock screws. Rotate the dial to the counterclockwise position (free/auto) and confirm that the wheel hub turns free of the axle shaft.
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Tighten to 6 Nm (53 lb-in).
10. NOTICE: Make sure that the wheel hub and brake disc mounting surfaces are clean and free of foreign material or excessive runout
and/or vibration may occur.
Position the brake disc onto the wheel hub noting the position of the index mark.
11. Position the brake caliper and anchor plate assembly and install the bolts.
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F-250 and F-350, tighten to 225 Nm (166 lb-ft).
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F-450 and F-550, tighten to 400 Nm (295 lb-ft).
Vehicles with DRW
12. Position the wheel extension and install the new nuts.
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Tighten to 176 Nm (130 lb-ft).
Vehicles with ABS
13. Install the wheel speed sensor harness-to-wheel knuckle bolt.
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Tighten to 15 Nm (133 lb-in).
14. Install the 2 wheel speed sensor harness-to-axle bolts.
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Tighten to 15 Nm (133 lb-in).
15. Connect the wheel speed sensor harness to the frame.
