Chrysler RAM TRUCK 2500 1994 Service Manual page 44

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LUBRICATION AND MAINTENANCE 0 - 19
TO SERWiCE AIR CLEANER ASSE11LY
(1) Raise hood of vehicle and inspect all air cleaner
components for damage or improper attachment.
(2) Remove air cleaner cover (Fig. 5 or 6).
(3) Remove paper air filter element from air
cleaner body. Hold a shop light on throttle body side
of element. Inspect air intake side of element. I f light
is visible through element, blow dust from element
and reuse. I f element is saturated with oil or light is
not visible, replace filter. I f element is saturated with
oil, perform crankcase ventilation system tests.
(4) Remove fiber crankcase filter (Fig. 5 or 6) and
clean with solvent, squeeze filter dry and apply small
amount of engine oil. I f a metallic mesh is used to re­
tain fiber filter, clean mesh with solvent and reuse.
(5) Clean inside of air cleaner cover and body with
vacuum or compressed air. I f oily, wash with solvent.
To Install, reverse the preceding operation.
AIR INLET
Fig. 5 Air Cleaner—3.9 L, 5.2 L or 5.9 L Engines
CRANKCASE VENTILATION SYSTEM
Engine crankcase pressure and emissions are
vented into combustion chambers through the posi­
tive crankcase ventilation (PCV) system. The crank­
case ventilation system should have enough volume
to overcome crankcase pressure created by piston
backwash. I f a crankcase ventilation system becomes
plugged, the crankcase pressure will increase and
force engine oil past the piston rings creating oil con-
H O U S I N G
Fig. 6 Air Cleaner—8.0 L Engine
sumption. Blockage of crankcase ventilation system
can occur at the vacuum source coupling, ventilation
valve, crankcase filter or a collapsed hose. Refer to
Group 25, Emission Control Systems for proper ser­
vice information.
FUEL FILTER
The fuel filter requires service only when a fuel
contamination problem is suspected. For proper diag­
nostic and service procedures refer to Group 14, Fuel
System,
IGNITION CABLES, DISTRIBUTOR CAP, AND
ROTOR
Inspect and test ignition cables, distributor cap and
rotor when the spark plugs are replaced. Oil and
grime should be cleaned from the ignition cables and
distributor cap to avoid possible spark plug fouling.
Mopar Foamy Engine Degreaser or equivalent is rec­
ommended for cleaning the engine compartment. For
proper service and diagnostic procedures refer to
Group 8D, Ignition System.
SPARK PLUGS
Ignition spark plugs should be replaced at the
mileage interval described i n the Lubrication and
Maintenance Schedules. Refer to the General Infor­
mation section of this group. For proper service pro­
cedures refer to Group 8D, Ignition Systems.
DRIVE BELTS
Inspect and adjust drive belts at the interval de­
scribed i n the Lubrication and Maintenance Sched­
ules. Refer to General Information section of this