Dodge dakota 2002 Service Manual page 2031

21 - 192 AUTOMATIC TRANSMISSION - 46RE
ACCUMULATOR (Continued)
OPERATION
Both the accumulator and the 3-4 accumulator
function the same. Line pressure is directed to the
small end of the piston when the transmission is
placed into a DRIVE position (Fig. 74), bottoming it
against the accumulator plate. When the 1-2 upshift
occurs (Fig. 75), line pressure is directed to the large
end of the piston and then to the kickdown servo. As
the line pressure reaches the accumulator, the com-
bination of spring pressure and line pressure forces
the piston away from the accumulator plate. This
causes a balanced pressure situation, which results
in a cushioned band application. After the kickdown
servo has become immovable, line pressure will fin-
ish pushing the accumulator up into its bore. When
the large end of the accumulator piston is seated in
its bore, the band or clutch is fully applied.
NOTE: The accumulator is shown in the inverted
position for illustrative purposes.
Fig. 74 Accumulator in DRIVE - FIRST Gear Position
1 - LINE PRESSURE
Fig. 75 Accumulator in SECOND Gear Position
1 - BOTTOM OF BORE
2 - LINE PRESSURE
3 - SHUTTLE VALVE
INSPECTION
Inspect the accumulator piston and seal rings.
Replace the seal rings if worn or cut. Replace the pis-
ton if chipped or cracked.
Check condition of the accumulator spring. Replace
the spring if the coils are cracked, distorted or col-
lapsed.
DR