DESCRIPTION AND OPERATION
Page 37
INCREASED CAPACITY OIL PAN AND
IMPROVED FILTRATION
The capacity of the oil pan is 36 quarts
(34.1 liters). The added volume, compared with
that of earlier engine models, increases the soot
retention levels to maximize oil drain intervals. In
addition to the deeper sump, the oil pan also has
a boss for mounting of the oil dipstick tube at the
left side of the engine (Figure 32).
Oil filtration has also been improved for the
ASET™ AC engine. The spin-on type full-flow oil
filters have an improved filter media which gives a
significant gain in efficiency. These filters are
silver in color. The engines are also equipped
with the new Centri-Max
®
ULTRA or ULTRA
PLUS filter with its larger volume and improved
filtration (0–5 microns).
32
Figure 32 — Oil Dipstick Tube, Left Side Installation
(AC Engine)
An improved centrifugal oil filter assembly was
introduced in ASET™ AC engines in August
2003. This new centrifugal filter is called
Centri-Max
®
ULTRA PLUS and contains new
rotor and mating shaft journal diameters which
are smaller than those used in previous
centrifugal filter configurations. The smaller rotor
bushing and shaft diameters provide a significant
increase in rotor RPM and filtration efficiency.
The previous design rotor MUST NOT be used in
the new Centri-Max
®
ULTRA PLUS filter. If the
previous design rotor is used in a Centri-Max
®
ULTRA PLUS filter, the rotor bushings will be a
very loose fit on the smaller shaft diameter. This
will not allow the rotor to rotate, rendering the
filter non-functional.
ENGINE ELECTRONIC CONTROL UNIT
(EECU) AND SYSTEM SENSORS
33
Figure 33 — Enhanced EECU (ASET™ Engines)
1. Oil Filter Adapter
2. Isolator
3. Dipstick Tube
4. Oil Pan
5-111.bk Page 37 Monday, July 10, 2006 2:26 PM
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