Air system question.......(I'm stumped)

[chessie4905]

   Get a mechanics stethoscope and start hunting near compressor. Also drain all air tanks and leave drains open to allow accumulated oil and sludge to completely drain out, at least one or two days. Tank at rear bulkhead, in compartment under driver, and one above batteries.  There are 2 air drain pushbuttons  inside fuel filler door for the main air tank. The tank is divided into two sections, wet and dry.Make sure all drains actually work and aren't plugged up.There is also a moisture drain on the compressor muffler, which is shsped like a fat horiz. Sausage by the compressor. The air system is designed to accumulate most of oil and moisture in wet tank; much less in others that receive their air from wet tank. An air supply to the system without engine running can be very helpful.You did also replace the governor when you did the compressor ? Small air leaks at idle can extend air build up significantly.

[chessie4905]

That air leak at the brake treadle.....does it leak with the dd3's applied or released?

[Chaz]

I'll have to look.