Perkins 4006 User Handbook Manual page 46

MAINTENANCE PROCEDURES
CLOSED CIRCUIT BREATHER SYSTEM
Release the retaining clips and remove the
top cover (1) see Fig. 40 from the filter
separator body (2) remove the foam element
(3) and the gauze strainer (4) check it for oil
sludge saturation wash thoroughly in a
suitable solvent, shake off excess solvent
and blow dry with compressed air. Clean any
oil sludge deposits from the filter body re-
assemble and fit to engine.
NOTE: Cleaning agents must not enter the
Fig. 40
engine via the breather system as oil dilution
may occur causing engine damage.
42 4006/8 Diesel, May 1998