Internal Inlet Filter
The compressed air inlet port for the Automatic AirPrime primer is protected by a stainless steel mesh filter that is recessed within the threaded port located at the top of the primer body. The purpose of the filter is to trap debris that accumulates in the air brake system over time or due to excess pipe sealant or Teflon tape used during assembly of the truck. If the efficiency of the primer degrades, this is a common cause and should be investigated.
Checking an Automatic Primer
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