The EPA10 DEF Pump Module is located behind the diesel exhaust fluid tank mounted to a bracket. The DEF pump module draws DEF from the tank and supplies pressurized DEF to the DEF metering unit located on the Aftertreatment Device (ATD). The EPA10 DEF Pump Module contains a serviceable filter to remove contaminates from the DEF. The DEF pump module also uses a serviceable air bladder to maintain consistent DEF pressure to the DEF metering unit. The DEF pump module bladder, DEF pump module filter, and air valve are the only serviceable parts on the DEF pump module. The DEF pump module filter element is located inside the plastic cartridge and is installed only one way. The DEF pump module bladder must be discharged prior to removal and will be recharged after installation with clean, dry, oil-free shop air. It does not have to be recharged with nitrogen. The DEF pump module bladder is recharged with air to 2.8-3.2 bar (40-60psi) upon installation. The bladder’s air pressure needs to be checked every two years.
Looking for Detroit Diesel DiagnosticLink Software? Click Here
Looking for Factory Printed Detroit Diesel Manuals? Click Here
The DEF pump module bladder, DEF pump module filter, and air valve are the only serviceable parts on the DEF pump module. The DEF pump module filter element is located inside the plastic cartridge and is installed only one way. The DEF pump module bladder must be discharged prior to removal and will be recharged after installation with clean, dry, oil-free shop air. It does not have to be recharged with nitrogen. The DEF pump module bladder is recharged with air to 2.8-3.2 bar (40-60psi) upon installation. The bladder’s air pressure needs to be checked every two years. The DEF pump module bladder, DEF pump module filter, and air valve are the only serviceable parts on the DEF pump module. The DEF pump module filter element is located inside the plastic cartridge and is installed only one way. The DEF pump module bladder must be discharged prior to removal and will be recharged after installation with clean, dry, oil-free shop air. It does not have to be recharged with nitrogen. The DEF pump module bladder is recharged with air to 2.8-3.2 bar (40-60psi) upon installation. The bladder’s air pressure needs to be checked every two years.
