Spring - F-250, F-350: Installation
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- Position the rear spring and install the shackle-to-rear bracket bolt and flag nut until snug. Do not tighten the nut at this time.
- Install the spring-to-front bracket bolt and flag nut until snug. Do not tighten the nut at this time.
- Position the spring upper plate and install the U-bolts and nuts, align the U-bolts so they are as vertical as possible, and tighten until snug. Do not fully tighten the nuts at this time.
- With the suspension at curb height, tighten the shackle-to-rear bracket bolt to 225 Nm (166 lb-ft).
- With the suspension at curb height, tighten the spring-to-front bracket bolt to 515 Nm (340 lb-ft).
- With the suspension at curb height, tighten the nuts evenly in a cross-type pattern in 4 stages.
- Stage 1: Tighten to 50 Nm (37 lb-ft).
- Stage 2: Tighten to 100 Nm (74 lb-ft).
- Stage 3: Tighten to 150 Nm (111 lb-ft).
- Stage 4: Tighten to 185 Nm (136 lb-ft).
- Install the wheel and tire. For additional information, refer to WHEELS AND TIRES article.
CAUTION:
Final tightening of the shackle-to-rear bracket bolt must be done with the suspension at curb height or damage to the bushing may occur.
CAUTION:
Final tightening of the spring-to-front bracket bolt must be done with the suspension at curb height or damage to the bushing may occur.
CAUTION:
Final tightening of the U-bolt nuts must be done with the suspension at curb height or incorrect clamp load may occur.