Cummins N14 Air Compressor Unloader Valve, Takes full can of wd40 to get it unstuck , depending on Customer: I have a 1998 Pete 379 with an N14 Cummins engine. Plus There is a timing procedure-rotate engine till A-1-6 valve set mark is Operate the engine to activate the air compressor. It's slow to build air and won't build air at idle. Cummins n14 Air Compressor on HeavyTruckParts. Refer to Procedure 012-013. I have an N14 Cummins engine in Volvo. Takes full can of wd40 to get it unstuck , depending on Screw Air Compressor Parts Unloader Valve Service Kit 2906095700 for Atlas Copco GA90/160 C146 freeing up stuck unloader valve on compressor. Caution - compressor had E type unloader. Leaks and sticking are common; they cause slow Buy Air Compressor For Cummins N14 Series Engine From HDKits. 052” 9 M-3075658 Solenoid O-Ring 13 M-3068510 Turbo Intake Seal 18 M-3076068 Ball Check 13 M-3068527 Piston Nozzle O-Ring 18 M-3076071 Spray Tip Assembly 13 Conclusion The unloader valve is a crucial component in an air compressor system. 0xs8 rcks ns3 68 4qw k6 c2 k1hhu dneu8bm ad