Vacuum Schematics; Leak Detection Pump (Ldp); Removal And Installation; Pcv Valve-4.7L V-8 Engine - Dodge 2000 DURANGO Service Manual

DN
DIAGNOSIS AND TESTING (Continued)
plugged, replace breather. Tighten breather to 12
N·m (106 in. lbs.) torque. Do not attempt to clean
breather
(15) If vacuum is still not present, disconnect each
PCV system hose at each fitting and check for
obstructions or restrictions.
Fig. 18 PCV Valve/Oil Filler Tube—4.7L V-8 Engine
1 – O-RING
2 – LOCATING TABS
3 – CAM LOCK
4 – OIL FILLER TUBE
5 – PCV LINE/HOSE
6 – PCV VALVE

VACUUM SCHEMATICS

A vacuum schematic for emission related items can
be found on the Vehicle Emission Control Informa-
tion (VECI) label. For label location, refer to Vehicle
Emission Control Information (VECI) Label.

LEAK DETECTION PUMP (LDP)

Refer to the appropriate Powertrain Diagnostic
Procedures service manual for LDP testing proce-
dures.
EMISSION CONTROL SYSTEMS
Fig. 19 PCV Breathers/Tubes/Hoses—4.7L V-8
1 – FRESH AIR FITTING
2 – CONNECTING TUBES/HOSES
3 – CRANKCASE BREATHERS (2)
4 – RUBBER HOSE
5 – AIR CLEANER RESONATOR

REMOVAL AND INSTALLATION

PCV VALVE—4.7L V-8 ENGINE
The PCV valve is located on the oil filler tube (Fig.
20). Two locating tabs are located on the side of the
valve (Fig. 20). These 2 tabs fit into a cam lock in the
oil filler tube. An o-ring seals the valve to the filler
tube.
REMOVAL
(1) Disconnect PCV line/hose (Fig. 20) by discon-
necting rubber hose at PCV valve fitting.
(2) Remove PCV valve at oil filler tube by rotating
PCV valve downward (counter-clockwise) until locat-
ing tabs have been freed at cam lock (Fig. 20). After
tabs have cleared, pull valve straight out from filler
tube. To prevent damage to PCV valve locating
tabs, valve must be pointed downward for
removal. Do not force valve from oil filler tube.
(3) After valve is removed, check condition of valve
o-ring (Fig. 20).
Engine
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