F 150 4WD Pickup V8-5.4L VIN V Flex Fuel (2006)
Suspension Spring ( Coil / Leaf ): Service and Repair
Rear
Spring
WARNING: All vehicles are equipped with gas shock absorbers which will extend unassisted. Do apply heat or flame to the shock absorbers
during removal or component servicing. Failure to follow these instructions may result in personal injury.
CAUTION: Suspension fasteners are critical parts because they affect performance of vital parts and systems and their failure can result in major
service expense. A new part with the same part number must be installed if installation becomes necessary. Do not use a replacement part of lesser
quality or substitute design. Torque values must be used as specified during reassembly to make sure of correct retention of these parts.
1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer Maintenance/Service and Repair.
2. Using a suitable jack, support the axle.
3. Remove and discard the shock absorber lower nut and bolt.
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To install, tighten to 90 Nm (66 ft. lbs.).
4. Remove the 4 U-bolt nuts, the U-bolt plate and the 2 U-bolts. Discard the nuts and the U-bolts.
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To install, tighten the U-bolt nuts in 2 stages.
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Stage 1 (all vehicles): Tighten in a cross pattern to 30 Nm (22 ft. lbs.).
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Stage 2 (light duty vehicles): Tighten in a cross pattern to 115 Nm (85 ft. lbs.).
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Stage 2 (heavy duty vehicles): Tighten in a cross pattern to 250 Nm (184 ft. lbs.).
5. NOTE: If removing the left rear spring, lower the fuel tank to gain access to the spring shackle-to-frame bolt.
NOTE: If removing the right rear spring, remove the muffler to gain access to the spring-to-frame bolt.
Remove and discard the spring-to-frame nut and bolt.
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To install, tighten to 300 Nm (222 ft. lbs.).
6. Remove and discard the spring shackle-to-frame nut and bolt.
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To install, tighten to 133 Nm (98 ft. lbs.).
7. CAUTION: Only lower the axle enough to gain access to remove the spring.
Lower the jack and remove the spring and shackle.
8. If necessary, remove the spring-to- shackle nut, bolt and spring shackle.
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Discard the nut and bolt.
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To install, tighten to 133 Nm (98 ft. lbs.).
9. NOTE: On 4x4 vehicles, make sure the spacer is correctly seated between the axle and spring stack, with the nose pointed inward.
To install, reverse the removal procedure
