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09-1974 Hitachi Model 73-35603
 Myself
and several other crane drivers operate a 1974 Hitachi Model
#73-35603 overhead 55st container crane. Job description is
loading and unloading containers onto and off of yard
semi-trucks. This particular crane has a badly misaligned
trolley rail at the boom joint, Approx. 1/16+ drop from boom
side joint to landside. The crane cab has four wheels that
run on the rails, in addition there are four thruster wheels
that stop the cab from moving side to side, these thruster
wheels are set more of a vertical fashion and roll against a
side type of rail for stability. My question would be is it
safe to operate the container crane with the back right
thruster wheel missing for over a year. I have concerns as
the misaligned boom joint causes severe jarring when 30, 40
tons are constantly being handled. rail clamps continually
loosen at the boom joint. We have had instances where a rail
clamp or two has broken. Rail clamps are spaced about every
18 to 24 inches. By the way the thruster wheel fell onto the
deck of a container ship, like I stated previously this was
over a year ago and has not been replaced. An OSHA approved
Surveyor Inspected the crane and issued a report
saying the item does not cause a detriment to the crane.
However to his defense, he did not know the wheel had been
missing for over a year.
Name withheld
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