Thanks folks! I searched for images but most were electric and I couldn't find the hinged plate.
I didn't get a picture of the plate, but at least now I know how to test it.
Thanks
Thank you. I'm really glad that it's such a good, popular coupler.I have a Dico / Titan 10 on my trailer too. Easy coupler to rebuild, as I just did a complete overhaul on mine. That "hinged cover" isn't a hinged cover. It is the cover for the front load roller. Be sure to add some grease to the zerk fitting in the end of the bolt now and again to keep that roller lubed up..
When I bleed the brakes / test, I remove the breakaway lever (4 bolts) and use a bar down inside to actuate the Master Cyl. arm.
No need for a lockout on drum brakes. I converted mine to Kodiac Disc on both axles and had to add the reverse lockout solenoid.