Originally Posted by rzbill
Hmmm. Now things start to make sense. If one externally filters to the same particle size as the internal screen (the 32/35 mesh requirements noted earlier in thread) then the internal screen will never catch any debris. No need to check it.
In the vans std setup, the AFP is a coarse screen so the EX5 screen may pick up debris. I'll keep cleaning it for that reason. Thanks for the info!
Wait wait. This is not true. The servo screen is the screen of last resort. Debris can come from a number of places including hoses, pumps, diaphrams, etc. Check it per manufacturers specs and dont neglect it due to other filters up stream regardless of micron.