Oil Pump Cleaning And Inspection; Oil Pump Inner And Outer Rotors; Checking Rotor Clearance; Specifications - Jeep 200 Cherokee Service Manual

9 - 46 ENGINE
CLEANING AND INSPECTION (Continued)
OIL PUMP
CLEANING
Wash all parts in a suitable solvent and inspect
carefully for damage or wear.
INSPECTION
(1) Before installing oil pump check pump bore
depth in block (A) and pump body height (B) (Fig.
78). Difference between A and
0.020-0.082 mm.
Fig. 78 Oil Pump Bore Depth
Fig. 79 Oil Pump Inner and Outer Rotors
1 – OUTER ROTOR
2 – INNER ROTOR
2000 JEEP CHEROKEE
(2) Check clearance between rotors (Fig. 80).
B should be

SPECIFICATIONS

ENGINE SPECIFICATIONS

DESCRIPTION
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425 CX2
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . 4
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 mm
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 mm
Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . 2499.5cc
Injection order . . . . . . . . . . . . . . . . . . . . . . 1–3–4–2
Compression ratio . . . . . . . . . . . . . . 21 : 1 (+/− 0.5)
Gasket . . . . . . . . . . . . . . . . . . . . . . . . Asbestos free
Crankshaft
Front journal diameter
Nominal . . . . . . . . . . . . . . . . . . . 62.985-63.005 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 62.735-62.755 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 62.860-62.880 mm
Front bearing diameter
Nominal . . . . . . . . . . . . . . . . . . . 63.043-63.088 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . . . . . 62.793-62.838
−0.125 . . . . . . . . . . . . . . . . . . . . 62.919-62.964 mm
Clearance between journal and
bearing: 0.038-0.103 mm
Center journal diameter
Nominal . . . . . . . . . . . . . . . . . . . 63.005-63.020 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 62.755-62.770 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 62.880-62.895 mm
Fig. 80 Checking Rotor Clearance
SPECIFICATIONS
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