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TURBO HYDRA-MATIC 2 5 0 TRANSMISSION
7A2-11
MAINTENANCE AND ADJUSTMENTS
TRANSMISSION FLUID
Fluid Level and Capacity
Fluid level indicator is located in filler tube at right rear
of the engine. To bring fluid level from ADD mark to FULL
mark requires one pint of fluid. Fluid level should be checked
at every engine oil change.
Fluid level should be to FULL mark with transmission
fluid at normal operating temperature (200°F). With warm
fluid (room temperature 70°F), level will be 1/4-inch below
ADD mark on dipstick. The normal operating temperature
is obtained only after at least 15 miles of highway-type driving
or equivalent of city driving.
Approximately 8 pints of fluid are required to refill
transmission after oil pan has been drained. The fluid
capacity of the Turbo Hydra-Matic 250 transmission and
converter assembly is approximately 2 1-1/2 pints, but correct
level is determined by mark on the dipstick rather than by
amount
added. Use only DEXRON
I1 automatic
transmission fluid or its equivalent.
NOTE: An early stage to a darker color from the usual
red color and/or a strong odor that is usually associated
with overheated transmission fluid is normal and is not
a positive sign or required maintenance or transmission
failure.
Checking Procedure and Adding Fluid
To determine proper fluid level at normal operating
temperature, proceed as follows:
1. Position vehicle on a level surface, place selector lever
in park (P), apply parking brake and have engine running at
normal idle.
2. Remove fluid level indicator, wipe it clean and
reinstall fully until cap seats.
3. Remove indicator and reading of fluid level should be
at full "FULL" mark.
4. If additional fluid is required, add DEXRONO I1
D-number automatic transmission fluid or its equivalent to
"FULL" mark on indicator.
If vehicle cannot be driven sufficiently to bring the
transmission to operating temperature and it becomes
necessary to check fluid level, transmission may be checked
at room temperature (70 degrees F) as follows:
1. Position selector lever in park (P), apply parking brake
and start engine. DO NOT RACE ENGINE. Move selector
lever through each range.
2. Immediately check fluid level with selector lever in
Park, engine running and vehicle on LEVEL surface. Fluid
level on indicator should be 1/4-inch below the "ADD"
mark.
3. If additional fluid is required, add enough fluid to
bring level to 1/4-inch below "ADD" mark on dipstick. If
transmission fluid level is correctly established at 7WF, it will
appear at "FULL" mark on dipstick when transmission
reaches its normal operating temperature of 200" F.
CAUTION: DO NOT 0 VERFILL, as foaming
and Joss of fluid through vent p i p might occur as
fluid heats up.
If fluid is too low, especially when cold, complete loss
of drive may result which can result in transmission failure.
Draining and Refilling Transmission
Oil pan should be drained and screen cleaned every 60,-
000 miles and fresh fluid added to obtain proper level on
indicator. For vehicle subjected to heavy city traffic during
hot weather, or in commercial use, when engine is regularly
idled, for prolonged periods or when vehicle is used for
towing, oil pan should be drained and screen cleaned every
15,000 miles. Drain fluid immediately after operation before
it has had an opportunity to cool.
WARNING:
TRANSMISSION
FLUID
TEMPERATURE CAN EXCEED 350°F.
1. Raise vehicle and support transmission with suitable
jack at the transmission vibration damper.
2. Remove transmission crossmember support.
3. With fluid receptacle placed under transmission oil
pan, remove oil pan attaching bolts from front and side of
pan.
4. Loosen rear pan attaching bolts approximately four
(4) turns.
5. Carefully pry transmission oil pan loose with
screwdriver, allowing fluid to drain.
6. Remove remaining screws and remove oil pan and
gasket. Discard gasket.
7. Drain fluid from oil pan. Clean pan with solvent and
dry thoroughly with clean compressed air.
8. Remove two (2) strainer-to-valve body screws,
strainer and gasket. Discard gasket.
9. Thoroughly clean strainer assembly in solvent and dry
thoroughly with clean compressed air.
10. Install new strainer-to-valve body gasket, strainer
and two (2) screws.
11. Install new gasket on oil pan and install oil pan.
Tighten its thirteen (13) attaching bolt and washer assemblies
to 12 lb. ft.
12. Lower vehicle add approximately 5 pints U.S.
measure (4 pints Imperial measure) of DEXRON I1
automatic transmission fluid or its equivalent through the
filler tube.
13. With selector lever in PARK position, apply parking
brake, start engine and let idle (carburetor off fast idle step).
DO NOT RACE ENGINE.
14. Measure selector lever through each range and, with
selector lever in PARK range, check fluid level.
15. Add additional fluid to bring level to 1/4-inch below
"ADD" mark on the dipstick.
C A U TI 0 N: Do not overfill. Foaming will result
if o verfi/ed.
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