MAINTENANCE
Page 131
CENTRI-MAX
®
ULTRA OR ULTRA PLUS OIL
FILTER
[219 EV]
The following procedure applies for both the
ULTRA and ULTRA PLUS filters. However, the
ULTRA PLUS rotor bushing hole sizes and the
mating shaft journals are smaller than those of
the ULTRA filter. As such, the rotors are not
interchangeable.
110
Figure 110 — Centri-Max
®
ULTRA PLUS and ULTRA Rotors
Centri-Max
®
ULTRA PLUS filter assemblies may
have a one-piece (early production) or two-piece
(current production) spindle configuration. Both
configurations, however, use the same ULTRA
PLUS rotor.
1. To prevent contamination from entering the
engine, thoroughly clean the area around
the centrifugal oil filter before removing the
cover assembly.
2. Loosen the nut at the top of the cover
assembly, then remove the cover and rotor
together.
3. Discard the rotor.
4. Clean the inside of the cover assembly.
5. Remove and discard the old O-ring seal
from the filter housing base.
6. Install a new O-ring on the filter housing
base (Figure 111). The O-ring should be
installed dry, non-lubricated.
5-111.bk Page 131 Monday, July 10, 2006 2:26 PM
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