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GROUP
7- AUTOMATIC TRANSMISSION
care should be taken not to lose the
ball.
FIG. 31 -Checking Gear
Train End-Float
9. The
rear adaptor
is
retained
by five bolts
and
spring washers
around the casing. Remove
these
and carefully withdraw the
adaptor
body and plate. This
will reveal
three sealing rings
around
the
out-
put shaft. T hese three rings
are
cast
iron and should
be
treated
carefully during
removal
to
prevent
damage.
10.
The
two
servos
are each
sec ured by two
bolts and spring
washers an
d removal of these bolts
will enable
the servos to be with-
drawn.
When removing the servos
ensu re tha
t the two operating struts,
which transmit movement from the
se rvos
to
the bands,
do not fall
out,
otherwise they may be lost or
damaged.
r
FIG. 32 -
Removing Front
Clutch and Input Shaft
Assembly
11. Check gear train end float.
Using a screwdriver between the
transmission case and the front of
the front clutch, lever the front
clutch assembly as far rearwards
as possible to take up any end
float.
Set up an indicator dial
gauge as shown (Fig. 31) and set
gauge to zero.
Make sure the
front clutch is as far rearwards as
possible then lever the front clutch
assembly forward, read the gauge
to determine the end float and
record.
If this is not between .010-.030
inches the front
thrust washer
mtJst be replaced with one of a
different thickness on reassembly,
see specifications for thrust washer
dimensions.
12. Withdraw the pump assem-
bly, gasket and thrust washer
a~ter
removing the six bolts and spnng
washers around the pump.
13. Withdraw the input shaft
and front clutch assembly (Fig. 32).
Two thrust washers are positioned
between the front and rear clutches,
the phosphor bronze washer bear-
ing against the ground rear face of
the front clutch, and the steel
wasner, which has two flats on the
internal diameter, locating on the
rear clutch projection.
14. Withdraw the rear clutch and
sun
gears
(Fig. 33). The needle
thrust race and washer are posi-
tioned on the rear of the front sun
gear shaft and sliould be removed.
Disengage the front band from the
stop in the case, tilt slightly and
remove.
IS. Remove the centre support.
Unscrew the two centre support
securing screws and lockwashers.
These screws are around the out-
side of the case in line with the
centre support and positioned 1200
either side of the rear servo front
securing
screw.
Mark the centre
support in relation to the case, and
if necessary, tap the end of the out-
put shaft with a hide mallet. This
will drive the centre support for-
ward so that it can be removed.
16. Withdraw the planet gear as-
sembly. A steel washer and needle
thrust washer is positioned between
the planet gear assembly and the
output shaft.
FIG. 33 - Removing Rear
Clutch and Sun Gears
17.
Disengage the rear band
from the stop and remove.
18. Extract the one-way clutch
from the outer race and then re-
move the outer race which is
secured by a circlip in the planet
gear assembly (Fig.
44).
19. Withdraw the output shaft
and thrust
washer.
If necessary,
separate the output shaft from
the ring gear by removing the cir-
clip which retains them together.
20. Unscrew the inhibitor switch
screws and remove the inhibitor
switch. Unscrew the downshift valve
cable retainer and remove the cable.
Drive out the tension pin securing the
manual valve operating lever to the
cross-shaft and draw to one side.
Care should be taken not to lose the
detent ball and spring when remov-
ing
this
lever.
.
.
21. Drive out the tension pm
securing the cross-shaft locating
collar. The cross-shaft may now be
withdrawn by tapping the end to
which the manual linkage was pre-
viously
attached.
This will enable the
spring, inhibitor switch link, parking
pawl linkage, collar and welsh plug
to be
removed.
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