Dodge ZB 2005 Service Manual page 712

ZB
OIL PUMP (Continued)
(3) Remove oil pressure relief valve (1) and spring
(2) (Fig. 72).
(4) Wash all parts in a suitable solvent and inspect
carefully for damage or wear.
CLEANING
Clean all parts thoroughly. Mating surface of the
chain case cover should be smooth. Replace pump
cover if scratched or grooved.
INSPECTION
Fig. 73 Checking Oil Pump Cover Flatness - Typical
1 - STRAIGHT EDGE
2 - FEELER GAUGE
3 - OIL PUMP COVER
(1) Lay a straightedge (1) across the pump cover
surface (Fig. 73). If a 0.076 mm (0.003 in.) feeler
gauge (2) can be inserted between cover and straight
edge, cover should be replaced.
Fig. 74 Measuring Outer Rotor Thickness
(2) Measure thickness and diameter of rotors. if
the outer rotor diameter is 82.45 mm (3.246 in.) or
less, replace rotor set (Fig. 74) and (Fig. 75).
Fig. 75 Measuring Inner Rotor Thickness
(3) If either rotor thickness measures 18.92 mm
(0.744 in.) or less, replace rotor set
Fig. 76 Measuring Outer Rotor Clearance in Case
1 - FEELER GUAGE
2 - OUTER ROTOR
(4) Measure clearance between outer rotor (2) and
case (Fig. 76). If measurement is 0.19 mm (0.007 in.)
or more, and outer rotor (2) is within specification,
replace chain case cover.
ENGINE 9 - 51