Perkins 4012TESI Series, Руководство пользователя, Страница: 41 / 57

MAINTENANCE PROCEDURES
4012/16 Gas, February 1998 37
CHANGING AIR FILTER (SEE SECTION
A1 IN THE WORKSHOP MANUAL)
STANDARD
Remove the end cover (3) of the air filter
housing, after unscrewing the retaining wing
nut, carefully lift out the paper air filter
element (1). For servicing the element see
General Servicing Instructions below.
When all servicing procedures are
completed, fit the new or cleaned element
into the housing. When fitting the end cover
ensure it has seated fully in the housing
before tightening the wing nut. Inspect and
tighten
all air filter connection before
resuming equipment operation (see Fig. 25 ).
HEAVY DUTY
The heavy duty air filter incorporates a
cyclone unit (4) fitted to the air intake of the
filter (replacing the mesh guard (2)).
To
clean the cyclone unit remove it from the air
filter and blow out any foreign matter within
the unit.
Changing the paper air filter
element the procedure is the same as for the
standard air filter above.
GENERAL SERVICING INSTRUCTIONS
Servicing procedures include cleaning or
replacing the filter element, cleaning the filter
housing, and assuring that all piping and
hose connection from the filter outlet to the
turbocharger intake are sealed airtight.
FILTER ELEMENT SERVICE
Clean the exterior of the filter housing and
then carefully remove the element. Inspect
the "clean air side" of the element and the
outlet side of the filter housing for any
unusual dust accumulations.
(a) Dust accumulations on the clean air side
of the element usually indicates a rupture
in
the filter medium. Immediate
replacement of the element is
necessary.
(b) Dust accumulation on the inlet side of
the housing is usually caused by
leaking gaskets and/or damaged gasket
surfaces. If this condition exists, leaking
gaskets
should be replaced and
damaged gasket surfaces should be
repaired before placing the unit back
into service.
ELEMENT CLEANING
If the filter element is in good condition with
light dust contamination on its outer surface
and the air flow restriction indicator
(see
Page 28 ) has not been triggered, the
element can be cleaned using a vacuum
cleaner or compressed air.
DISCONNECT
BATTERIES OR ANY
OTHER MEANS OF STARTING THE
ENGINE.
WARNING
Fig. 25
1
2
3
4
REPLACE ANY
ELEMENT WHICH IS
DAMAGED.
NEVER “BLOW” DIRT OUT OF THE
FILTER HOUSING. THIS MAY
INTRODUCE DUST INTO THE ENGINE.
INSTEAD, USE A CLEAN, DAMP CLOT,
DO NOT OIL THE ELEMENT.
WHEN USING COMPRESSED AIR
ALWAYS WEAR EYE PROTECTION.
WARNING