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7-90
GROUP
7-
AUTOMATIC TRANSMISSION
excessive amount of foreign material
in
it, the
following cleaning procedure
should be used:
1. Thoroughly clean the outside
surfaces of the converter. Remove
both drain plugs
and
drain as much
fluid as
possible.
2. Check the converter as detailed
under Inspection.
3. Place the
converter
on the clean-
ing machine with the drain holes fac-
ing
downward.
4.
Flush the inside
diameter of the
converter
hub for one
minute using
the
equipment jog
switch to control
the pump pressure.
5. Install the filler cap on the con-
verter. Place the converter on the
mounting pad with the drain holes
facing
upward.
6.
Connect
the pump pressure line
to the filler cap. Fill the converter to
the
drain hole level, then install the
filler
plugs
finger
tight.
7. Turn
the converter over on the
mounting pad so that the drain plugs
are facing downward and are 90 de-
grees
to
the cross-bar. Secure the con-
verter
with the cross-bar.
8. Remove both drain plugs from
the
converter,
then start the shaker
and
flushing pump motors and allow
it to operate for seven mmutes in
this manner.
9. Shut off the flushing pump and
allow
the
shaker to operate until the
converter
is
nearly dry of cleaning
fluid,
then
shut off the shaker motor.
Too/-
TS8L-7902·A
L
D 1<499-E
FIG. 12
-Converter
Checking Tool
10.
Remove the converter from the
mounting pad and place it on the
screen and allow all cleaning fluid
to drain from it.
11. Repeat steps 5 through 10 to
complete the cleaning operation.
12. After all cleaning fluid has been
drained, torque the drain plugs to
specification.
INSPECTION
TURBINE AND STATOR END
PLAY CHECK
1. Insert the tool (Fig. 12) into
the converter pump drive hub until
it bottoms.
2. Install the guide over the con-
verter pump drive hub.
3. Expand the split fiber bushing
in the turbine spline by tightening
the adjusting nut. Tighten the adjust-
ing nut until the tool is securely
locked into the spline.
4. Attach a dial indicator to the
tool (Fig. 13). Position the indicator
button on a converter pump drive
hub, and set the dial face at 0 (zero).
5. Lift the tool upward as far as
it will go and note the indicator
reading. The indicator reading is the
total end play which the turbine and
stator share. If the total end play ex·
ceeds the limits specified in Part 7-S,
replace the converter unit.
STATOR ONE-WAY CLUTCH
CHECK
1. Loosen the adjusting nut to free
the split bushing, and then remove
the tool from the converter.
2. Install the stator outer race
holding tool in one of the four holes
provided in the stator (Fig. 13).
3. Insert the tool in the converter
pump drive hub. As the tool enters
the converter, the pins will engage
the stator clutch inner race spline.
4. Place a torque wrench on the
tool (Fig. 13). The tool (and stator
inner race) should
turn
freely clock-
wise from the pump drive hub inside
the converter). It should lock up and
hold a 10 ft-lb pull when the wrench
is turned counterclockwise. Try the
clutch for lockup and hold in at least
five different locations around the
converter.
5. If the clutch fails to lock up
and hold a I 0 ft-lb torque, replace
the converter unit.
STATOR TO IMPELLER
INTERFERENCE CHECK
I.
Position the front pump
as-
sembly on a bench with the spline
end of the stator shaft pointing up
(Fig.14).
2. Mount
a
converter
on
the
pump so that the splines on the one-
way clutch inner race engage the
mating splines of the stator support,
and the converter hub engages the
pump drive gear.
3. While holding the pump station-
ary, try to rotate the converter coun-
terclockwise. The converter should ro-
tate freely without any signs of inter-
ference or scraping within the convert-
er assembly.
4. If there is an indication of
scraping, the trailing edges of the
stator blades may be interfering with
the leading edges of the impeller
blades.
In
such cases, replace the
converter.
STATOR TO TURBINE
INTERFERENCE CHECK
1. Position the converter on the
bench front side down.
2. Install a front pump assembly
to engage the mating splines of the
stator support and stator, and pump
drive gear lugs.
3. Install the
input
shaft, engag-
ing the splines with the turbine hub
(Fig. 15).
4. While holding the pump sta·
tionary,
attempt
to rotate the turbine
with the input shaft. The turbine
should rotate freely in both direc·
tions without
any
signs of interfer-
ence or
scraping
noise.
5. If interference exists, the sta·
tor front thrust
washer
may be worn,
allowing the stator to hit the turbine.
In such cases,
the
converter must be
replaced.
The
converter
crankshaft
pilot
should be
checked
for nicks or dam-
aged surfaces
that
could cause inter-
ference
when
installing
the con-
verter
into
the
crankshaft.
Check the
converter front pump drive hub for
nicks or sharp edges that would
damage the pump
seal.
OUTPUT SHAFT AND
PRIMARY SUN GEAR SHAFT
I.
Inspect the thrust surfaces and
journals for
scores.
Inspect the inter-
nal gear
for
broken or worn teeth.
2. Inspect
the aluminum
sleeve
for scores or
leakage.
Inspect the
ring grooves for burrs.
3. Inspect the keyway
and
drive
ball pocket for wear,
and inspect
the
splines for burrs, twist or wear.
4. Inspect the output shaft sleeve
for
alignment
with
the
governor
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