M-52a2 air tank sludge

[63Wfirefighter]

Ive been doing a lot of work to get everything fixed on our fire departments M52a2. One issue I have run into is that there seems to be a lot of sludge coming from the drain valve on the air tanks under the drivers step. I spent 2 yrs in the army working on trucks like this and haven't seen anything other than water and rust come out of these tanks. Do I have a serious issue goin on with the air system and if so what do I need to do to correct it? I don't have any manuals for this truck yet and don't have the time to look it up in the online manuals right now so any info would be appreciated.

 

[dittle]

Sludge, as in water mixed with rust type sludge or oil blow-by coming from the compressor type of sludge?

 

[63Wfirefighter]

Oil.

 

[runk]

Try cleaning /replacing the air inlet filter, too much inlet restriction increases the engine oil sucked into the compressor.

 

[M813A1]

Worst case you will have to replace the air compressor !! But try the filter first might be he quicker fix!!