How Many Tang Washers Comes In Part Number 5-101  

Please refer to the linked FAQ article that concerns converting from drum to electric-over-hydraulic disc brakes. This explains all the components required. I have also attached a link that will take you directly to some examples of the disc brake…

Yes the kit you need is the part #T10HREKITBB that you referenced which you'd need two sets of since you have a tandem axle trailer. This does come with the correct bearings and seal too which would be all that you'd need.

The Mounting Bolts and Hardware #BRKH10A that you referenced are designed to be torqued 45 to 50 ft lbs of torque since they are designed to fit 10 inch brake assemblies.

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

The Demco Hydraulic Trailer Brake Actuator part #DM72VR should be a direct replacement for the Atwood 61101 Brake Actuator that you have now. This newest updated it rated at 7K instead of 6K. This is a bolt on option that mounts on 3" centers.…

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

Yes, the DeeMaxx Disc Brake Kit #DE66YR will allow you to use 14" trailer wheels.