C15 overhaul help

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Bigrigmayo93, Aug 6, 2018.

  1. Bigrigmayo93

    Bigrigmayo93 Light Load Member

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    2003 Kenworth w900 with a c15 mbn. 800k miles. Stock 475 hp with a 550 rerate with stock cat turbo. Was hoping to do p*d*i but it’s not in the budget right now. But I plan on doing it in the near future.
    I’m having the head checked this week because I am losing pressure somewhere. Worse comes to worse I will be doing an inframe. I would appreciate any kind of info I can get.
    What kind of inframe to do? Make sure what gets checked & changed?
    Everything is pretty much original. Previous owner didn’t change anything.
    Thanks for the advice ahead of time.
     
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  3. A5¢

    A5¢ Medium Load Member

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    From what I have seen on this website, the most important thing is to get a Caterpillar shop with a good reputation.
     
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  4. tommygun58

    tommygun58 Light Load Member

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    If you don't want to spend an arm and a leg, there are good cat mechanics that are reasonable. Also there are some good after markets kits a ton cheaper than cat OEM. Talk to some guys that do Tractor pulls. They can steer you to the best that stay together. If your in east tx. I can give you a #... Good luck
     
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  5. tommygun58

    tommygun58 Light Load Member

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    Also you can find a head online for 3k or less. I replaced mine last year. No core charge too. It's my understanding that cat doesn't make the heads anymore. They will sure sell you 1 though..
     
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  6. IPD is an aftermarket kit

    IMG_20180808_124249.jpg

    Look into replacing your head if it's even close to 1mil in mileage.

    Items to look into while doing inframe

    Water pump replace
    Thermostats both replace
    Check air to air (clean out, pressure test)
    Radiator clean it or replace it
    Clutch fan check it or rebuild kit
    Fuel lines to motor replace
    Fuel lines from tanks replace
    Change radiator upper and lower hoses
    Heater hoses to bunk and cab

    *******Important********
    Replace hoses behind turbos while they are off.


    Check liners if you need them couterbored do it before Inframe as well as getting correct shims for liners.



    IMG_20180808_130112.jpg
    I know I'm forgetting something stuff I just did this on a MXS motor.
    So any questions ask away.
     
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  7. tony97905

    tony97905 Road Train Member

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    Oil cooler....replace it now along with the oil pump if you don't have proof they've been changed recently.
     
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  8. RustyBolt

    RustyBolt Road Train Member

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    Actually, they'll sell you 2. But only give you one.
     
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  9. Bigrigmayo93

    Bigrigmayo93 Light Load Member

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    Chicago Illinois
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    Thanks for the advice. I’m actually out of Chicago il.
    I’m sending my head in today to get tested. Depending on the condition it’s in, I wasn’t sure if I should rebuild or buy new. But I know it comes with the overhaul kit from kenworth.
     
  10. Bigrigmayo93

    Bigrigmayo93 Light Load Member

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    Chicago Illinois
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    I wasn’t sure on after market or cat. I called kenworth yesterday for quotes. The middle price kit was 10k. It came with fuel injectors (which I need) & an oil pump.
    The most expensive kit they had was 13k it came with the same as the other kit & a new head & new water pump.
    Thanks for the advice!
     
  11. Bigrigmayo93

    Bigrigmayo93 Light Load Member

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    They’re original so I will be changing. Thanks
     
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