Positive Crankcase Ventilation System; Engine Lubrication System; Oilpan; Oilpump - Ford LRG-423 Service Manual

02-5
Engine Service, 2.3L 02-5
DESCRIPTION AND OPERATION (Continued)
Positive Crankcase Ventilation System
This engine is equipped with a positive, closed-type
crankcase ventilation system, which recycles
crankcase vapors to the intake manifold (9424).
Lubrication System
The engine lubrication system consists of
l
Oil pan (6675)
l
Oil pump screen cover and tube (6622
l
Oil pump (6600)
l
Oil filter (6714)
l
Passageways in the cylinder block (6010),
crankshaft (6303), camshaft (6250) and cylinder
head (6049).
The oil pan is pressure-cast aluminum and serves as
both an oil reservoir and engine bottom cover. The oil
pan has reinforcing ribs which strengthen the pan,
reduce engine noise transmission, and aid in oil
cooling.
Oil Pan
The oil pump is a rotor type with an inner rotor which
turns inside of an off-center outer ring.
The oil pump is located in the front of the cylinder
block and is driven by the timing belt through a
sprocket identical to the camshaft sprocket (6256).
Oil Pump Location, Outer Timing Belt Cover, Timing
Belt, and Oil Pump Sprocket Removed.
INNER TIMING
BELT COVER
CYLINDER
BLOCK
(6019)
(6010)
PPDA23997-A
Engine Lubrication System
Oil Pump
The oil pump (6600) contains a pressure relief valve.
To deliver sufficient pressure and volume at low rpm,
the pump is designed to provide high pressure and
volume at high rpm. To prevent damage or excess oil
consumption, the pressure relief valve exhausts
excess pressure and volume at high rpm.
The oil pump is not serviced except to replace the front
seal and the two O-rings that seal it to the cylinder
block (6010).