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Old 07-07-2019, 11:34 PM   #1
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Turbo outlet clamp broke

Thought Id post my recent experience with the hope of saving someone else a real headache. On July 4th we were climbing Snoqualmie Pass on I-90 in Washington State when we heard a loud noise like a blowout. Assuming we lost a tire we quickly moved to the shoulder. I checked the tires and found all of them to be fine. Not really knowing where to look next, I peeked in at the engine through an outside access door and saw that a blue hose/tube had blown off the turbo outlet. This left us with no turbo boost whatsoever. With too little emergency shoulder to try and attempt a repair we limped 1/4 mile to the next exit. I reached the turbo from the access panel in the bathroom floor and discovered that the band clamp had broken. I spent a small fortune at a convenience store to buy three cheesy hose clamps. I strung them together to form one clamp long enough to fit over the tube and clamped it back in place. I was fearful the cheesy clamps wouldnt hold against 30+PSI of turbo pressure, but I had no choice. We eased into our next stop near Seattle and sought out a Cummins shop the next day to buy a new clamp. (I actually bought a spare) I have never heard anyone here talk about this failure before. The Cummins parts guy said its not an uncommon occurrence.
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Old 07-08-2019, 02:11 AM   #2
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Yes, they are a fairly common to fail in the OTR trucks, not so much in the RV sector, just because of the low miles! You have to realize the many heat/cool cycles these clamps go thru, to understand the fail rate! Glad your roadside fix, held up, Good Job! And now that you have a spare, you will never have this problem again! How it works for me, anyway! Rail!
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