x758 engine failure
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    x758 engine failure

    I have an x758 with 400 hours (2013) that started knocking really bad and lost compression in the middle cylinder. This tractor had all it's maintenance points hit, always used Deere oil/filters. The dealer says it needs a new engine.

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    Quote Originally Posted by Patrickmurphy View Post
    I have an x758 with 400 hours (2013) that started knocking really bad and lost compression in the middle cylinder. This tractor had all it's maintenance points hit, always used Deere oil/filters. The dealer says it needs a new engine.
    What did they say failed on the engine? Engine failures in the little Yanmar are not very common, especially at such low hours. I have one in a 455 with 2,700 hours on it and it runs great. I have even seen them with 6,000 and more hours on them and they reached those hours with normal maintenance and nothing more.

    Please find out exactly what failed on the engine. I am sure they have torn it down far enough to know. Plus, Deere has a factory rebuild for their diesel engines. Last time I was at the dealer, they were pulling a diesel engine out of a SCUT which had 4,500 hours on it sending it out for rebuild.

    Make sure you find out all your options from the dealer before they order a new engine assembly. Swapping in a new engine is the "easiest fix" for the dealer, but very well may not be the most cost effective way to repair your engine. When you purchase a new engine, you are paying for a lot of parts which you have that aren't damaged. Perhaps a short block can be purchased instead.

    Depending upon your delivery date on the machine, is there any warranty coverage available? You can call Deere directly to see what they say by calling 1-800-537-8233 for turf equipment. Have your tractor VIN number when you call.......

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    I have the same 455 with 1500 hours and neary a hiccup with the engine. Like Sully said, these engines don't just **** the bed without cause. I'd also like to know why.
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    Wow. I won't ever say it doesn't happen but a catastrophic failure is rare.
    Most common failures are bent rods due to hydro lock, either oil or coolant. Connecting rods can get bent and twisted. The twisted part is where the knock comes from. Second is piston skirts deciding they dont want to play anymore. Piston gets yanked in half and jams up the works creating havoc.
    As for replacement.. It's likely to exceed the value of the unit. I can't look right now and see what is available. I would have the dealer immediately contact the TCSM. Territory Customer Service Manager. He is a Deere rep that can perform magic tricks with bags of money. IMHO, I would say you have a strong case for some help. Even out of warranty I have seen many cases of Deere stepping up and covering part if not all of the repair.

    Sent from my LGL52VL using Tapatalk

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    Complete engines are available. Price msrp is $9597. Minus $2000 core. So yur lookin at $7597.

    Sent from my LGL52VL using Tapatalk
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    You could also get a short block from yanmar.
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    Quote Originally Posted by johnH123 View Post
    You could also get a short block from yanmar.
    Or just rebuild the damn thing
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    Quote Originally Posted by xcopterdoc View Post
    Complete engines are available. Price msrp is $9597. Minus $2000 core. So yur lookin at $7597.

    Sent from my LGL52VL using Tapatalk
    That is a crazy price for a small diesel engine. I guess they really want you to just buy a new machine.
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    I'd talk to a independent diesel
    engine shop and get a quote for the rebuild.
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    Quote Originally Posted by xcopterdoc View Post
    Complete engines are available. Price msrp is $9597. Minus $2000 core. So yur lookin at $7597.
    Wow, I paid a little more than $7500 for my x750 used, with just 79 hours. I’m really hoping my Yanmar lasts.

    Going to keep an eye on this thread.
    Fozsey likes this.

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