US General 3848 wont build over 40psi

fordguy

blah.
Joined
Nov 24, 2022
Messages
629
google said maybe reed valvd? hiw do i checm it? any easy issues to check first? vakve going into tank works, and two diff gauges show 40psi

thanks gal 3.5hp
 
accorsing to manual looks like a B3800 pump
mastertoolrepair.com

B3800 Air Compressor Pump Replacement, Complete Assembly, Single-Stage, 3 - 5 HP #1166C6

Complete B3800 replacement air compressor pump assembly includes flywheel, sight glass, oil breather, and air filter (no aftercooler). 3 - 5 HP. Our site is easy to shop and we have online schematics, tech docs, and how-to videos available.
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reed valve?
mastertoolrepair.com

B2800 / B3800 Air Compressor Pump Valve Plate Kit #05C181

Air compressor valve plate assembly includes the valve plate with preinstalled valves, head gasket, and cylinder gasket. Our site is easy to shop with online schematics, tech docs, and how-to videos.
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not sure how to tell if mine is damaged, it looked ok?
 
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