Chrysler Concorde 1993 Service Manual page 413

9 - 30 3.3L ENGINE
(4) Clean oil screen and pipe in clean solvent. In-
spect condition of screen.
INSTALLATION
(1) Put a new o-ring on the oil pick-up tube and in-
stall into Chain Case Cover tighten screw to 28 N¼m
(250 in. lbs.) (Fig. 2).
Fig. 2 Oil Pump Pick-up Tube Service
(2) Apply a 1/8 inch bead of Mopar Silicone Rubber
Adhesive Sealant or equivalent, at the parting line of
the chain case cover and the rear seal retainer (Fig.
3).
Fig. 3 Oil Pan Sealing
(3) Use a new pan gasket (Fig. 4).
(4) Install pan and tighten screws to 23 N¼m (200
in. lb.).
(5) Lower vehicle and install oil dipstick.
(6) Connect negative battery cable.
(7) Fill crankcase with oil to proper level.
OIL PUMP SERVICE
It is necessary to remove the oil pan, oil pickup
and chain case cover (CCC) to service the oil pump
rotors. The oil pump pressure relief valve can be ser-
viced by removing the oil pan and oil pickup tube.
Fig. 4 Oil Pan Gasket Installation
Refer to Timing Chain Cover Removal and Installa-
tion of this section for procedures.
DISASSEMBLY
(1) To remove the relief valve, proceed as follows:
(a) Drill a 3.175mm (1/8 inch) hole into the relief
valve retainer cap and insert a self-threading sheet
metal screw into cap.
(b) Clamp screw into a vise and while supporting
chain case cover (CCC), remove cap by tapping
CCC using a soft hammer. Discard retainer cap
and remove spring and relief valve (Fig. 5).
Fig. 5 Oil Pressure Relief Valve
(2) Remove oil pump cover screws, and lift off cover.
(3) Remove pump rotors.
(4) Wash all parts in a suitable solvent and inspect
carefully for damage or wear (Fig. 6).
INSPECTION AND REPAIR
(1) Clean all parts thoroughly. Mating surface of
the chain case cover (CCC) should be smooth. Re-
place pump cover if scratched or grooved.