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PART 7-1
AUTOMATIC TRANSMISSION (Borg-Warner)
rear of the body.
From the front
of the body withdraw the 1-2 valve
spring and plunger.
6.
Remove the oil tube collector
by unscrewing the eight cheese-
head screws.
Keeping the separ-
ator plate uppermost, remove two
screws situated in the rear filter
body and remove the governor line
plate.
The separator plate can
now be removed, carefully, reveal-
ing the 3-2 dump valve pump, check
valve and downshift valve keep plate
in the lower valve body
(Fig.
26).
Remove these items.
7. The servo orifice control valve
is retained by a keep plate and the
modulator valve by a small dowel
pin.
Remove the keep plate and
dowel pin then remove both valves
and springs (see Fig. 27).
8. Remove the keep plate from
the range control valve body. Re-
move the retaining plug and range
control valve (Fig. 26).
To avoid confusiOn each com-
ponent of the valve bodies assem-
bly
should
be washed
separately
in clean industrial solvent, carefully
inspected and replaced in the order
in which they were removed.
Be-
fore installing parts they should be
lubricated with automatic trans-
mission fluid
.
REASSEMBLING THE VALVE
BODIES
1. Refit the modulator valve spring,
valve
plunger, valve and
plug.
Secure the plug with the dowel.
Refit the servo orifice control valve
and spring, locating the spring
inside the counterbore in the end
of the valve and retain with the
keep plate
(Fig.
27).
2. Referring to Fig. 27 reposition
the downshift valve keep plate,
3-2 dump valve spring and ball, and
disc type valve.
3. Carefully reposition the sep-
arator plate on top of the lower
valve body, making sure that the
check valve is not displaced and
particularly that the 3-2 dump valve
ball is centrally located in the
separator plate hole. Reposition the
governor line plate and secure with.
two screws from beneath in the
rear of the valve bodies assembly.
Before tightening these screws to
20 to 30 in. lbs., make sure that the
dump valve is positioned correctly.
4. Fit the regulator valves (Fig.
26). Fit the primary regulator valve,
sleeve and spring in the lower
valve body. Then, replace second-
ary regulator valve, followed by its
FIG. 25 -
Transfer Pipes
SERVO ORIF-ICE
-
CONTROL VALVE
KEEP PLATE
LOWER VALVE B \
SERVO
OR
IF\
CE CONTROL VALVE
MANUAL CONTROL
VALVE
Q.-.OUMP VALVE
,BALL
I
~~'"'"""'
FIG. 26- Exploded View of Lower Valve Body and Valves
7-27
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