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PART 7-1
AUTOMATIC TRANSMISSION (Borg-Warner)
7-21
(i) Gearbox changes down too
easily.
(j)
Gearbox will not change
down.
(k)
Slip and squawk or judder
on starting in "1
"
or
"2"
.
(I) Slip and squawk or judder
on starting in
"R".
(m) Slip but no judder on start-
ing in
"
R".
(n) No drive in
"R"
.
The following method of linkage
adjustment is used for the setting of
the downshift valve cable.
1. Ensure engine and transmission
are at normal operating temperatures,
the carburettor choke is fully open
and carburettor correctly adjusted.
2. Adjust the rod
"
F", Fig. 17,
to give the correct pedal height.
Correct pedal height is 3.
65"
to 4
.16"
measured between floor pan (mat in
position) at right angle to pan and a
point on the upper surface of the
pedal pad
2.24"
from the lower edge.
Refer Fig. 17.
3. Disconnect the downshift inner
cable trunnion "A" (Fig. 17) from
the bell crank assembly with the bell
crank assembly set at idle. Adjust
trunnion "A" into hole "B" so that
the crimped stop on the kickdown
inner cable just touches to
-h
•
off the
outer cable without slack. Install the
clip.
NOTE: For safety sake trans-
mission selection should
be in park position.
4. Check that at full throttle the
cable pull is 1. 75 inches minimum.
This dimension is the measured dis-
tance that the ferrule on the inner
HOLE
I
FIG. 16- Transmission
Fluid Dipstick- Typical
cable moves away from the end of
outer cover adjuster.
Service downshift cables differ
from original production installation
in that they are supplied with the
ferrule free to move and therefore
the following methods of adjustment
can be used with either type of cable.
Alternate Method
The downshift cable can also be
adjusted by determining the position
of the downshift valve cam in relation
to the accelerator pedal. This method
can be used when a new downshift
valve cable is being fitted and the
transmission sump is
removed.
The
method of adjustment is as follows:
1. Remove all the free play from
the accelerator linkage and ensure
that the choke is fully open.
2. Note that the position of the
downshift valve cam when the
throttle butterfly is closed, i.e., the
accelerator pedal is released. The
heel of the downshift valve cam
should lay against the large diameter
of the downshift valve, see "idling
position"
Fig.
18, with all slack in
the inner cable taken up.
3. With the throttle butterfly fully
open, i.e., the accelerator pedal
pressed down fully in the kick-down
position, the constant radius lobe of
the cam should be in contact with the
downshift valve, as seen in "kick-
down position", Fig. 18. The posi-
tion of the cam can be varied by
altering the adjuster on the down-
shift valve
cable.
4. Fit the sump "nipping" all the
sump bolts. Then, in one operation,
tighten each bolt to 10 ft. lbs.
5. Road test the vehicle to check
the shift speeds (see table), and
quality of change.
6. Crimp ferrule to inner cable so
that it is
.010"
off the outer cable end.
TABLE OF SHIFT SPEEDS
The speeds mentioned below are
to the nearest mph.
SHIFT POINTS:
(D iff.
Ratio
3.23:
1)
Shift
Shift
Throttle
M.P.H.
Throttle
M.P.H.
1-2
K.D
31-39
1-
2
Zero
8-10
2-3
K.
D
53-61
2-
3
Ze
ro
10-13
3-2
K.
D
44
-54
3-1
Zero
4-8
3-1
K.
D
19
-29
2-1
Zero
10-18
ADJUST
ROO
•
AS.S'v.
19UOI
TO OITAIN fUll
THROTTLE
WHEN SHAFT A$SY
.
!97:151
TOUCHES THE FLOOI
COVEtiNG
PEDAl HEIGHT
SETTING
lUIIIII(ATE
PIVOTS MARKED
•
•
PU CHART
CH ... SSIS lUIRICATION SEC
l
No
-457·
·
AUTOMATIC
TRANSMISSION
K/0 CAllE ADJUSTMENT
WITH
THE
SHAFT
ASSY
9919
SET
AT
IOU.
ADJUST TPitNION
"
A
"
INTO HOlE
I
SO
THAT
THE
CRIMPED STOP
ON
KICKOOWN
INNU ( ',C:E
JUST
TOUCHES
THE OUTEI
CAllE-
WITHOUT
SLACK.
THEN
INSTAll
CliP
9125
FIG. 17- Linkage Adjustment 6 Cylinder Engines
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