May I ask a dumb question about wiring on machines ?
Is it a design problem, or the techs that build the machine or just plain bad luck that caused Queenslander problem ?
Reason I'm asking: I spend the past week tracing and replacing a 10M fibre optic cable and I found 2 instances where the allowed bend radius was not adhered to.
You give the people that assemble these machines way too much credit calling them Techs. I worked for Cat at 2 different facilities and half the people putting machines together were hired because they could pass a drug test. I'm not saying there aren't talented people with lots of skill working for Cat, but a lot of their assemblers had minimal education or training aside from on the job training.
Each assembly station has a standard work document that outlines and dictates how that task is to be performed with words and pictures. I know this because I spent most of 2008 writing these documents in one of their plants along with several other people. I spent months working with consultants, managers, other engineers and the assembly line workers putting these documents together, fine tuning them, updating them, etc.
As per this situation, where the sensor cable was to be routed and secured are all called out in the standard work document pertaining to that assembly. That doesn't mean that what was called out by the engineer is the best place though, or that the cable hadn't come loose with years of operating and vibration. Usually, gross mistakes with an assembly get found very soon, and the standard work documents are changed and assemblers informed of changes. Some assembly issues take years to develop and then get properly diagnosed whether it was a design flaw, or assembly related issue.
