Front spring replacement

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by spindrift, May 5, 2021.

  1. spindrift

    spindrift Road Train Member

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    2004 Pete 379
    Got back from my semi-annual suspension inspection and the shop is recommending that I have my steer axle springs replaced. He showed me where the rubber stop is hitting the underside of the frame and suggested that was a tell-tale sign that the springs are soft. I was a bit surprised by their estimate. Is this something I can do myself without any specialized tools?
     
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  3. Mattflat362

    Mattflat362 Road Train Member

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    About $2200.00? Just curious.
     
  4. spindrift

    spindrift Road Train Member

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    LOL...did you somehow get a copy of the quote too??
    $2,077. Let's call it $2,100.
     
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  5. skallagrime

    skallagrime Heavy Load Member

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    Check if this is actually correct for your truck, spring cost range is about 300 to 600$ a side depending on what you get, its wise to replace in sets and do shocks when you do it, new ubolts and the bushings (came with my springs), shackles if worn.

    So parts last go round was 900$ delivered to my house, mechanic was about 800, but he cut me a deal since i just provided parts and he didnt have to go figuring out parts when he had the truck.
     
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  6. spindrift

    spindrift Road Train Member

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    It's correct. This shop has a stellar reputation.
     
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  7. lester

    lester Road Train Member

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    Torch to cut old U-bolts. Tall jack and or a bunch of good wood blocks to lift front end. While you are at it check your spring hanger bushings. If they are worn bad they can be a bugger to get pins out. If bushings are bad in top frame mounted hanger replacement of hanger may be necessary.

    Not a bad job over all. I did mine couple hours per side. On concrete with a shop full of tools.

    We have a great big pneumatic jack with probably a 12+ inch base and just as much ram travel. That made the job way easier
     
  8. skallagrime

    skallagrime Heavy Load Member

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  9. AModelCat

    AModelCat Road Train Member

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    Not bad at all to do. Just make sure you support the truck by the frame and not the steer axle. You want as close to zero load on the axle/suspension as possible.

    Changed my first front spring (with some guidance) when I was still a teenager. So no its not at all a hard job to do.

    Probably still threaded pins in that 2004. They make a special impact socket for that but if you grease the spring pins regularly then a 15" adjustable wrench will usually thread them out without much trouble.

    Definitely new u-bolts. Don't even waste time trying to save the old ones. Not worth the hassle. Make dang sure you keep the spacers and shims that are between the spring and axle in the EXACT order they came out. Don't want to stick the caster shim in the wrong way.
     
  10. Rideandrepair

    Rideandrepair Road Train Member

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    Have you replaced the front shocks yet? I’ve had mine bottom out on one side, on RR tracks. Bottomed out. Damaged the rubber bumper. Shocks were bad, and I was going too fast. That was yrs ago, hasn’t happened since. I’ll probably replace both of mine. One seems weak. Best thing to do is measure them from top of spring to frame. See if they’re the same. I’m sure the shops right, but bad shocks, and big bumps can cause the spring hit the bumper, and just be a one time thing. Maybe try gas charged Monroe’s.
     
    Last edited: May 5, 2021
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  11. AModelCat

    AModelCat Road Train Member

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    Or they could be like the ones in my KW when I bought it. Sagged down on either side of the axle beam :eek:
     
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