As i and qkoop said earlier , i don't believe the impellar can spin . But the buffeting air can make the impellar rock back and forth , up and down and possibly in and out with the end float the shaft has .
Dert-T , no , i only had that pic when i was looking at ideas to build a float to cart my own excavator . The driver that covered that stack in my photo has got a job with me anytime he wants one . That's the sort of guy you could trust not to loose your contract carting Caterpillars equipment for them by being to lazy to spend 1 minute covering the chimney , as Cat demands that it is done . And you are obviously the same quaility professional operator that takes care of someone elses gear . You will be supprised how many people take notice of that bucket over the chimney and write the phone number down off your door .
Orchard EX , by allways covering the chimney , if the Turbo does fail one day , that will be one possibility you can count out 100% .
If you want to cover the stack, more power to you, It's your $$ on the line.
But,
if a (relatively) stationary impeller is so fragile as to be damaged by a little rocking (or moving up and down, end to end) while on the trailer, how does it make it through a day of spinning at
xx thousand RPM with all the shock and vibration of digging/hammering/walking on rock etc.? Like Dualie said, theres still enough oil on it to get through startup, so it's not dry.
I don't agree that someone who doesn't believe the urban legend of the turbo is lazy or unprofessional. And I'd like to hear from someone at Cat (corporate not just a dealer) that demands that the stacks are covered to
save the turbo. (Gmads, Tigerrotor?)
Until then I'll take Dads advice: "Son, never argue with a true believer"
This was an interesting exchange/debate until the "lazy" and "unprofessional" insinuations.
:deadhorse (didn't this horse get beaten a year or so ago?)