It seems from the pics that the bolts line up top to bottom such that the back top and bottom and front top and bottom bolts could have a piece of flat stock thin metal drilled out to overlap each hole and then have a 'tab' which could be bent down to stop the bolts from loosening from vibration. This would include using the lock washers supplied and cleaning the threads of all the bolts prior to installing them back in 'chased' holes, ( ie. cleaned by a thread chaser, tap, before reinstalling each bolt with blue Locktite). This method is used a lot on mowers exhaust/ muffler bolts because of the intense heat and vibration. In the loader mount bolts case it seems there is sufficient jarring and shock to the entire area to warrant installing something to prevent the bolts from coming loose to begin with.
I'll check my DK-40 tomorrow because at 200 hrs or thereabout I have not checked the torque on any bolts except the loader structure, which I often find to be loose as a goose or missing bolts.
(And for the record, I just got my DK as dirty as it could ever be. I sunk it up to the steps in my stream while brush hogging close to the stream's bank and had to disconnect the brush hog to be pulled out by my neighbor's DK-55. I then craned out the brush hog with my tractor but nearly flipped it in the slippery mud.)
Thanks Island too:thumbsup:
