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#1 |
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Pro
Trade: manager of excavation division
Join Date: Dec 2005
Location: danbury,ct.
Posts: 3,660
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Faulty Hydraulic Hose
Anyone ever have a problem like this? We have a Kobelco 200SR I was operating the morning after Halloween. I was working on a long accessway to a rear lot, had the boom raised high and the stick about 3/4 of the way out talking to my other operator on the nextel. All of a sudden I hear a pop and out of the corner of my eye I see a blur (my head was turned) then BAM! I looked like this
the stick and 4' bucket came down crashing into the cab ( 2 teeth 10" through the glass) luckily the bucket was empty. The machine does have a Quick Disconnect on it which will allow the bucket to make contact with the cab. To make a long story short a hose on the stick cylinder didn't break but blew right out of the crimp on the fitting causing the stick to free wheel into the machine.Joe |
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#2 |
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DGR,IABD
Trade: Electrical; Commercial and Residential Service
Join Date: Mar 2005
Location: Central PA
Posts: 9,680
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Re: Faulty Hydraulic Hose
Jeeze.... I thought most machines had decel valves in the cylinders to slow down the boom and such during such catastrophic failures? Anyhow, it sounds like perhaps a field made hose where someone used an ASME crimp die on a metric ferrule or vice-versa. Maybe even a crimp with a worn crimp die. Glad you were okay. If someone was hurt, the first thing I'd want to do is procure that failed fitting for forensic meausrement of the final crimp dimension. Scary....
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#3 |
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Pro
Trade: manager of excavation division
Join Date: Dec 2005
Location: danbury,ct.
Posts: 3,660
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Re: Faulty Hydraulic Hose
The ins.co. had a special adjuster who deals with equip. failures come down from Mass. he took the hose and was getting it analized. The machine is a 2002 with about 3000hrs on it. I never remember replacing that hose and it looked like a factory hose to us. Whats really scary is I always hollar at the laborer or any one else for that matter about going under the bucket or near the machine while it's being worked, this deffinatly would have put a hurting or killed someone.
Joe |
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#4 |
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Pro
Trade: Residential Contractor
Join Date: Feb 2004
Location: Jensen Beach, FL
Posts: 10,475
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Re: Faulty Hydraulic Hose
Sometimes you just get a bad crimp, fractured ferrule, bad section of hose.....sometimes stuff just happens.
__________________
You can't solve you're problems with the same level of thinking that created the problems. Albert Einstein |
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#5 |
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Pro
Trade: excavating / concrete / masonry
Join Date: Feb 2006
Location: NW, CT
Posts: 2,452
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Re: Faulty Hydraulic Hose
Joe,
Did the insurance company inspector ever let you know what they thought the cause of failure was. Nick |
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#6 |
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Pro
Trade: manager of excavation division
Join Date: Dec 2005
Location: danbury,ct.
Posts: 3,660
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Re: Faulty Hydraulic Hose
Nick,
Not really but they paid the claim for the new cab.
__________________
___"Remember You Never Get A Second Chance To Make A First Impression"______________________ Joe |
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