Removal
Remove, clean and inspect the air compressor unloader
valve assembly.
Caution: The unloader valve body is installed with spring
tension. Use care when removing to prevent personal
injury.
Hold the unloader valve body down and remove the two
captive washer capscrews and the two plain washers.
Remove the unloader valve body.
Remove the o-ring seal.
Remove the rectangular ring seal.
Remove the unloader valve cap and the unloader valve
spring.
NOTE: Disassembly of the center unloader valve on
Cummins two cylinder air compressors is similar to the
single cylinder unloader valve.
Remove the intake valve seat and valve.
Remove the intake valve spring.
Cleaning and Inspection
Remove all carbon and varnish from the unloader valve
and body.
Compressor Unloader Valve (4-03) Section 4 - Compressed Air System
N14Page 4-12
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