building the AMT flat bed

[Madd Trucker]

on two  of  the  air tanks   it looks like  moduals  on them    what are  they   for

[Casey]

 

https://www.truckingtruth.com/cdl-training-program/page50/trailer-air-tanks-and-shutoff-valves#:~:text=They are filled by the,send to the trailer brakes.

 

Trailer Air Tanks

Each trailer and converter dolly has one or more air tanks. They are filled by the emergency (supply) line from the tractor. They provide the air pressure used to operate trailer brakes. Air pressure is sent from the air tanks to the brakes by relay valves. The pressure in the service line tells how much pressure the relay valves should send to the trailer brakes. The pressure in the service line is controlled by the brake pedal and the trailer hand brake.

[Madd Trucker]

thanks  Casey     I know  about    the  air   valves  but two   of  the  tanks  looks like  some  type  of modual   molded  to them I  was wondering  what  they  are

[Casey]

Sorry, I guess I misunderstood. I also have the Watkins van trailer, which only has one tank, but it's nearly identical to what's shown on the Flatbed trailer's instruction sheet.

Are you able to post an image or two of the tanks you have in hand?