CHRYSLER SERVICE MANUAL
TOROUE-FLITE TRANSMISSION—31
verse servo may be checked by applying air
pressure to their respective passages when the
valve body is removed. To make the complete
air pressure check proceed as follows: (Refer
to Fig. 16.)
CAUTION
Compressed air supply must be free of all dirt
and moisture.
Raise the vehicle on a hoist, drain the trans-
mission fluid and remove the transmission oil
pan. Remove the accumulator cover and valve
bodies assembly. Apply air pressure to the front
clutch passage, located slightly toward the cen-
ter of the transmission from the accumulator
(be sure to cover accumulator piston bore to
prevent piston from being blown out). Protect
from oil spray by holding a clean lintless cloth,
cardboard, or some other shield against the
bottom of the transmission case when applying
the air pressure. Listen for a dull "thud" which
indicates that the front clutch is operating.
Hold the air pressure on for a few seconds and
observe for excessive oil leaks in the system.
Apply air pressure to the rear clutch passage
(near the center rear end of the lower surface
of the transmission case). Listen for a dull
"thud" which indicates that the rear clutch is
operating. Also check for excessive oil leaks.
Apply air pressure to the kickdown "apply"
(line) pressure passage (toward the center of
the transmission case and to the front of the
kickdown servo. Observe the operation of the
kickdown servo lever and band when air pres-
sure is applied.
Apply air pressure to the kickdown "apply"
(compensated throttle) pressure passage (to-
ward the center of the transmission case and
to the rear of the kickdown servo). Observe
the operation of the kickdown servo.
Apply air pressure to the low and reverse
servo passage (toward the center of the trans-
mission case and to the front of the low and
reverse servo). Observe the operation of the
low and reverse servo, lever, and band, when
air pressure is applied.
If the clutches and servos operate properly,
"no drive" conditions as well as erratic or no
upshift conditions, indicate that the malfunc-
tioning exists in the control valve body assem-
bly. Disassemble, clean, inspect and service the
valve body assembly as described under "Re-
conditioning of Valve Body and Transfer Plate
Assemblies."
Upon completion of the air pressure check,
and servicing the valve body assembly, install
the valve body assembly, accumulator cover,
and transmission oil pan. Fill the transmission
to proper level with fluid, and adjust the con-
trol cable and throttle linkage.
U. Governor—Clean assembly, and check
weight assembly and valve for burrs, scratches
or sticky operation. Examine the governor
valve shaft, shaft snap rings and seal rings.
V. Rear pump—Clean and inspect assembly
for side and diametral clearance. Note whether
rear oil pump pinion ball is in place. Examine
output shaft support face for scoring.
a. Front pump—Drive sleeve—Clean and in-
spect assembly for side and diametral clearance.
Examine oil pump inner and outer rotor for
scoring. Check front pump drive sleeve seal
rings.
b.
Regulator valve, mating surfaces, gasket—
Clean and inspect valve body for scratches and
scoring on valve bores and face which bears
against the front pump housing. Examine the
valve body to determine if the secondary re-
action orifice is free of dirt. Check gasket for
uniformness of compression by valve body.
c. Converter—Flush out converter and check
converter to housing runout. Refer to Torque
Converter Section of this manual.
d. Front clutch—Clean and inspect discs,
plates,
drive hub, return spring, piston levers,
cushion spring and retainer. Check the follow-
ing front clutch circuit leakage possibilities:
(1) Valve body and valve body to case mat-
ing surface.
(2) Accumulator small and large piston
rings.
(3) Regulator valve body to case mating
surface.
(4) Torque converter reaction shaft seal
ring.
(5) Input shaft small and large seal rings.
(6) Intermediate shaft No. 1, 2, and 3 seal
rings.
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