1st time I changed mine on the RD990X, had to get some lengths of 2x4 wood. Set against the wing, and to the front of the deck. Maybe 18" long for the side spindles, & 30" long for the middle one?
Then for the bolts, I ended up having to use a standard short 3/4" socket & a breaker bar. Ratchet I had would not fit height wise, plus the breaker bar was longer for more leverage.
When putting the bolts back in, use some Never Seize on the threads. That way the next time you take them off, you can simply hold onto the wing with one hand & wrench with the other.
Have had mine on & off 6 times or so now. Put some of the Never Seize on the bolts each time.