Navigator 4WD V8-5.4L VIN 5 (2006)
Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.
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. If equipped, turn the air suspension switch to the OFF position.
2. With the vehicle in NEUTRAL, position it on a hoist.
3. Remove and discard the shock and spring assembly upper nuts.
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To install, tighten to 35 Nm (26 ft. lbs.).
4. Remove the shock absorber lower nut and bolt.
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Discard the nut.
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To install, tighten to 400 Nm (295 ft. lbs.).
5. Remove the shock absorber and spring assembly.
6. NOTE: If the individual spring and/or shock components are not being serviced, continue with Step 9.
NOTE: For reference during assembly, index the upper mount, spring and shock absorber.
Using a suitable spring compressor, compress the spring until the tension is released from the shock absorber.
7. While holding the shock rod, remove the nut and washer.
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Remove the shock absorber.
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Discard the nut.
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To install, tighten to 30 Nm (22 ft. lbs.).
8. Remove the upper mount, dust boot and insulator.
