First let me give a little back history. I bought a truck CAT C13 ACERT this last February 2022 that had a rebuilt motor in September of 2020 The truck was then parked from December of 2020 till February of 2022 (used maybe once a month for that whole year it was parked.) I bought it with less than 200 hours on the rebuilt motor. In April I had it in the shop to put a new air compressor on that had burned up and was told there was some metal shavings in the oil pan. I didn't think much of it because it was a rebuilt motor. In July, 3 teeth sheared off of one of the idler gears and ruined all of the other gears in the motor compartment. I recently got my truck back and it was out of the shop for 2 weeks before the exact same thing happened again. I've been racking my brain as to what could cause gears to fail twice in a matter of 500 hours worth of motor use when these motors should go for about a million miles. Any help would mean. Much appreciated
Broken teeth on gear train
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Chadan, Sep 12, 2022.
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Have to have a gear lash or centricity issue somewhere.
I had one mess up some gears and it was all caused by someone replacing the air compressor and not bothering to install the back compressor the engine block bracket back on the new one, compressor came loose and ended up messing up the geartrain and front cover.spsauerland and Magoo1968 Thank this. -
How good did they clean out the metal from the earlier failures? Just takes 1 small chunk to get in between the gears and catastrophic failure.
Magoo1968 Thanks this. -
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Look for scaring on the face of the two gears. Fixed what was wrong and had no further problems. -
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AModelCat Thanks this.
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spsauerland Thanks this.
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