F 350 2WD Super Duty V10-6.8L (2009)
18. Insert the shim between the rear spring and the spring seat.
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Position the shim so the center bolt through the spring leafs is in the shim recess, the stud on the bottom of the shim is in the spring seat recess
and the shim is aligned with the rear spring.
19. Install 2 new U-bolts and 4 new nuts. Tighten the nuts evenly in a cross-type pattern in 4 stages.
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For F-250 and F-350:
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Stage 1: Tighten to 50 Nm (37 lb-ft).
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Stage 2: Tighten to 100 Nm (74 lb-ft).
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Stage 3: Tighten to 150 Nm (111 lb-ft).
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Stage 4: Tighten to 200 Nm (148 lb-ft).
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For F-450 and F-550:
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Stage 1: Tighten to 100 Nm (74 lb-ft).
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Stage 2: Tighten to 200 Nm (148 lb-ft).
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Stage 3: Tighten to 300 Nm (221 lb-ft).
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Stage 4: Tighten to 400 Nm (295 lb-ft).
20. Remove the support from the axle.
21. Install new spring(s) as necessary.
