how to replace rear leafsprings? help - Diesel Bombers



Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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Old 03-12-2011, 08:21 AM
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Default how to replace rear leafsprings? help

i just broke one of the rear springs on the drivers side. i like to do my own repair work but i have never done the rear springs yet. is this something i should take to the dealer or can i do it. if it is easy to do can you explain what exactly to do. thanks alot
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Old 03-12-2011, 08:42 AM
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I pulled all springs on my '96 to replace the bushings. Not hard, but I had a frame lift available. I lifted it on the frame, and lowered it till the axles were resting on jack-stands. Removed shocks and U-bolts. Lifted the truck til the springs were 2-3" (I didn't want to unhook brake lines) above the axles and pulled the spring bolts. Once new bushings were in I went in reverse order to put it all back together. I took my time, and I had no alignment issues afterwards. Be sure and check bolt/nut tightness after 5-10 miles, 50 miles, and again at 100 miles just to ensure the jolts of the road didn't shake em loose.
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Old 03-12-2011, 09:00 AM
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This is an easy repair. The hardest part is getting all the bolts loose. There are 2 different ways to do this, one is to completely remove the axle, i.e. disconnect driveshaft, brakelines, ebrake cable, shackles. The other is to do it under the vehicle, using a set of straps/chains to keep the axle up, by only removing the rear springs.

If you are putting in new packs both sides need to be done.

You will need lots of penetrating oil for this. Start now by spraying the oil on the axle U-bolts, shackle bolts and allow time for it to do its job. Make sure to support the truck properly with jack stands, safety first. Spray the oil again. Remove the tire. Use a ratchet strap or chain to support the axle near the U-bolts, along with supporting the axle with a jack stand. Right now, the leaf spring should have no tension/weight on it. Undo the rear shackle bolts. Remove the front eye bolt, marking this as the front. Now the spring/axle is loose from the truck. Now, using a 1/2" or larger impact wrench remove the U-bolts. Installation is reverse of removal.

At this time, you may want to replace all the bushings in the spring pack, if they are worn.

If you are replacing a single spring in the spring pack, there is a bolt through the middle of the pack, spray penetrating oil on this and wait a few, then remove the nut, make sure to place the springs down to remember which way they came off. You may have to replace the bolt/nut on the spring pack. Reassemble.
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