Bedroom slide out: How to manually crank

[JeffAndPam]

This RV has three slide outs. I've researched and seen how to manually crank two of them, but I'm not sure how to on the bedroom slide out.
I'd be curious if anyone knows how. My google searches didn't reveal much.

About the only option I can consider is to remove the brake and push hard. If necessary, pull the two pins and remove the bars to make it easier to push.

Pics below.
BTW I know that second picture doesn't show the gearing on the right side, but it is identical to the left side. If need be I can get a closer picture.
I've also felt around where the gears are and hadn't felt anything to put a wrench on.
Thoughts?

 

[Kevin D Pem]

With the square tubing an adjustable wrench would do the trick till it couldn't be put on it.

 

[Diesel Pusher]

Disengage the brake on the slide motor then push the slide from the inside to get it out. Same process to manually retract the slide, only pushing from the outside, then engage the brake to hold it in for travel. This will work on all slides using Power Gear or Klauber slide motors as explained to me by a Tech at the REV service center in Coburg OR.

 

[JeffAndPam]

With the square tubing an adjustable wrench

That thought did cross my mind. Thank you for that confirmation.