TURBO
HYDRA-MATIC
TRANSMISSION
7E-61
Approximate Altitude
(Ft.
above
sea level)
D,N,P
S
or L
R
0
150
150
244
2,000
150 150
233
4,000
145
150 222
6,000
138 150
212
8,000
132
150
203
10,000
126
150
194
12,000
121
150 186
14,000
116
150
178
Fig.
7E-172
Oil
Pressure Check
- Car
Stationary, Vacuum Tube Disconnected
III
Oil Pressure
Check
-
With
Car Stationary and Engine at 1000 rpm
With
the transmission oil pressure
gauge
attached and the vacuum modulator
tube
connected for normal modulator operation, the transmission pressures should check
approximately as shown in Fig.
7E-173.
NOTE:
Pressures are not significantly affected by altitude or
barometric pressure when the vacuum modulator
tube
is connected.
Drive,
Neutral,
Park
Super
or Lo
Reverse
60
150
107
Fig
. 7E-173
Oil Pressure Check -
Car
Stationary, Vacuum
Tube Connected
OIL LEAKS
Before attempting to correct an oil leak, the actual
source of the leak must be determined. In many
cases, the source of the leak can be deceiving due
to wind flow around the
engine
and transmission.
The
suspected area should be wiped clean of all
oil
before
inspecting for the source of the leak. Red
dye is used in the transmission oil at the assembly
plant and
will
indicate if the oil leak is from the
transmission.
The
use of a black light to identify the oil at
the source of leak is also helpful. Comparing the
oil
from the leak to that on the
engine
or transmis-
sion dipstick (when viewed by black light)
will
de-
termine the source of the leak.
Oil
leaks around the
engine
and transmission are
generally
carried
toward the
rear
of the car by the
air
stream. For example, a transmission oil filler
tube
to case leak
will
sometimes
appear as a leak
at the
rear
of the transmission. In determining the
source of an oil leak, it is
most
helpful to
keep
the
engine
running.
POSSIBLE
POINTS
OF OIL
LEAKS
1.
TRANSMISSION OIL
PAN
LEAK
a.
Attaching
bolts
not correctly torqued.
b. Improperly installed or damaged pan gasket.
c. Oil pan gasket mounting face not flat.
2.
REAR
EXTENSION
LEAK
a.
Attaching
bolts
not correctly torqued.
b.
Rear
seal assembly - damaged or improp-
erly
installed.
c. Extension to case gasket—damaged or im-
properly installed.
d.
Porous casting.
3.
CASE
LEAK
a.
Filler
pipe
O-ring
seal-damaged or missing;
misposition of f ille r pipe bracket to
engine-
loading one side of
O-ring.
b. Modulator
O-ring
seal—damaged or improp-
erly
installed.
c. Governor cover, gasket and bolts—damaged,
loose;
case face leak.
d.
Speedo
gear
O-ring
damaged.
e.
Manual
shaft seal—damaged, improperly
installed.
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