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Old     (sporte77)      Join Date: Jul 2009       08-26-2010, 12:07 PM Reply   
Last weekend, I blew the output hose from the impeller. I replaced it, then the next day, the next hose downline blew!! Didn't just pop off - it ripped lengthwise.

There's the 1.25" hose that is on the output of the impeller, then the "T" for the shower, then another 1.25" hose that goes up to toward the thermostat and on into the water pump. I find it extremely unusual that both of the output hoses downline from the impeller would blow in 2 days. They split laterally (lengthways).

I have an '03 B52 with the PCM (Chev) Excalibur 330. It runs about 175 degrees normally cruising or pulling a tube. I noticed it was running about 180 at the time of failure(s). But that's not very hot. I have seen a lot hotter temps surfing/boarding. I was thinking there may be a blockage causing too much pressure. Perhaps the thermostat?

I've replaced both hoses and ran it about an hour - with no further blowouts. However, both blowouts happened after running about an hour the first time. Could it be just a coincidence? I had two friends with 02 B52's with me that day and an 06 B52 - and none of them have ever had this happen. It's got 330 hours on it. Seems to me that an impeller shouldn't be capable of blowing out a hose - unless the hose was just old and weak.

Anyone seen this happen before?

 
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