Dodge dakota 2002 Service Manual page 1522

DR
OIL PUMP (Continued)
Measure thickness and diameter of OUTER rotor.
If outer rotor thickness measures 20.9 mm (0.825
inch) or less or if the diameter is 62.7 mm (2.469
inches) or less, replace outer rotor (Fig. 61).
Fig. 61 Measuring Outer Rotor Thickness
If inner rotor measures 20.9 mm (0.825 inch) or
less, replace inner rotor and shaft assembly (Fig. 62).
Fig. 62 Measuring Inner Rotor Thickness
Slide outer rotor into pump body. Press rotor to the
side with your fingers and measure clearance
between rotor and pump body (Fig. 63). If clearance
is 0.356 mm (0.014 inch) or more, replace oil pump
assembly.
Install inner rotor and shaft into pump body. If
clearance between inner and outer rotors is 0.203
mm (0.008 inch) or more, replace shaft and both
rotors (Fig. 64).
Place a straightedge across the face of the pump,
between bolt holes. If a feeler gauge of 0.102 mm
(0.004 inch) or more can be inserted between rotors
and the straightedge, replace pump assembly (Fig.
65).
Inspect oil pressure relief valve plunger for scoring
and free operation in its bore. Small marks may be
removed with 400-grit wet or dry sandpaper.
Fig. 63 Measuring Outer Rotor Clearance in Housing
1 - PUMP BODY
2 - OUTER ROTOR
3 - FEELER GAUGE
Fig. 64 Measuring Clearance Between Rotors
1 - OUTER ROTOR
2 - FEELER GAUGE
3 - INNER ROTOR
Fig. 65 Measuring Clearance Over Rotors
1 - STRAIGHT EDGE
2 - FEELER GAUGE
ENGINE - 5.9L 9 - 273