Seal Rings - Dodge ram truck 3500 1996 Service Manual

21 - 354 AUTOMATIC TRANSMISSION—46/47RE
CLEANING AND INSPECTION
( C o n t i n u e d )
BR
ADJUSTING SCREW
ADJUSTING
LEVER
LOCKNUT
REACTION
LEVER
LINK A N D A N C H O R
BAND
J9521-106
Fig. 282 Rear Band And Linkage
ACCUMULATOR
Inspect the accumulator piston and seal rings (Fig.
283). Replace the seal rings i f worn or cut. Replace
the piston i f chipped or cracked.
Check condition of the accumulator inner and
outer springs (Fig. 283). Replace the springs i f the
coils are cracked, distorted or collapsed.
ACCUMULATOR
PISTON
INNER
SPRING
OUTER
SPRING
SEAL
RINGS
J9121-230
Fig. 283 Accumulator Components
FRONT SERVO
Clean the servo piston components with solvent
and dry them with compressed air. Wipe the band
clean with lint free shop towels.
Replace the front band i f distorted, lining is
burned, flaking off, or worn to the point where the
grooves in the lining material are no longer visible.
Inspect the servo components. Replace the springs
if collapsed, distorted or broken. Replace the guide,
rod and piston i f cracked, bent, or worn. Discard the
servo snap ring i f distorted or warped.
Check the servo piston bore for wear. I f the bore is
severely scored, or damaged, it will be necessary to
replace the case.
Replace any servo component i f doubt exists about
condition. Do not reuse suspect parts.
REAR SERVO
Remove and discard the servo piston seal ring (Fig.
284). Then clean the servo components with solvent
and dry with compressed air. Replace either spring if
collapsed, distorted or broken. Replace the plug and
piston i f cracked, bent, or worn. Discard the servo
snap rings and use a new ones at assembly.
SNAP
RING
PISTON
SEAL
PISTON
PLUG
SPRING
RETAINER
SNAP
RING
PISTON
CUSHION
SPRING
/
PISTON
SPRING
J9121-64
Fig. 284 Rear Servo Components
OIL PUMP AND REACTION SHAFT SUPPORT
Clean pump and support components with solvent
and dry them with compressed air.
Check condition of the seal rings and thrust
washer on the reaction shaft support. The seal rings
do not need to be replaced unless cracked, broken, or
severely worn.
Inspect the pump and support components. Replace
the pump or support i f the seal ring grooves or
machined surfaces are worn, scored, pitted, or dam­
aged. Replace the pump gears i f pitted, worn
chipped, or damaged.
Check the pump vent. The vent must be secure.
Replace the pump body i f the vent is cracked, broken,
or loose.
Inspect the pump bushing. Then check the reaction
shaft support bushing. Replace either bushing only i f
heavily worn, scored or damaged. I t is not necessary
to replace the bushings unless they are actually dam­
aged.
Install the gears in the pump body and measure
end clearance with a feeler gauge and straightedge
(Fig. 285). Straightedge should be resting on pump
body as shown:
• End clearance between outer gear and straight­
edge should be 0.010 to 0.063 mm (0.0004 to 0.0025
in.).
• End clearance between inner gear and straight­
edge should be 0.025 to 0.177 mm (0.001 to 0.007
in.).