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ttikalsky · 03-11-2008, 04:23 AM

This is called the airbox drain catch. The plug in the bottom of the 'crap can' is open because the pressure needs to be vented. The crap can catches the blowby at idle, when the RPM's increase the pressure builds and the breather valves are forced shut. The lines between the crankcase and the crap can will have a spring loaded valve, this NEEDS to be cleaned every oil change. Remove the breather valves and you can blow thru with compressed air, if you use to much pressure the valve closes. Detroit release a service procedure with a diagram of this airbox drain catch.

18SP284—Install Air Box Drain Canister Kit 23507154
- Thanks to the Wanderlodge Yahoo forum for making this doc available in the database!
- Would be nice to have a place to save these types of docs on this site!

03-11-2008, 04:23 AM	#9
ttikalsky Member Join Date: Mar 2006 Location: Minnesota Posts: 43	This is called the airbox drain catch. The plug in the bottom of the 'crap can' is open because the pressure needs to be vented. The crap can catches the blowby at idle, when the RPM's increase the pressure builds and the breather valves are forced shut. The lines between the crankcase and the crap can will have a spring loaded valve, this NEEDS to be cleaned every oil change. Remove the breather valves and you can blow thru with compressed air, if you use to much pressure the valve closes. Detroit release a service procedure with a diagram of this airbox drain catch. 18SP284—Install Air Box Drain Canister Kit 23507154 - Thanks to the Wanderlodge Yahoo forum for making this doc available in the database! - Would be nice to have a place to save these types of docs on this site!