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7A4-20
1977 PONTIAC SERVICE MANUAL
PERIODIC SERVICE RECOMMENDATIONS
TOWING
If the transmission, drive line or axle do not have a
malfunction, the vehicle may be towed in neutral at speeds
up to 45 mph. The distance should not exceed 50 miles.
For higher speeds or extended distances, it is
recommended that the propeller shaft be disconnected or the
rear wheels be off the ground.
TRANSMISSION FLUID
Transmission fluid level should be checked (with
transmission hot) every time engine oil level is checked or
every 7500 miles when engine oil is changed.
CAUTION: Since the Turbo Hydra-Matic
40
transmision is very sensitive to oil level, special
precautions should be taken when checking the oil
level, to ensure agahst
an
overfill (see Checking
Procedure).
Transmission fluid and filter assembly should be
changed every 24 months or 30,000 miles, whichever occurs
first. Refill with DEXRON or equivalent automatic
transmission fluid. Under heavy-duty operating conditions or
excessive stop-and-go driving, replace the fluid and filter
assembly at 15,000 mile intervals.
ON CAR SERVICE
COLUMN SHIFT CONTROLS
Adjust (Fig. 7A4-12)
1. Loosen screw on adjusting swivel clamp.
2. Set transmission range selector lever in PARK detent.
NOTE: Obtain PARK position by rotating transmission
range selector lever clockwise.
3. Set upper gearshift lever in PARK position and lock
ignition.
4. Push up on gear shift control rod to take up clearance
in steering column lock mechanism and tighten screw on
adjusting swivel clamp to 20 lb. ft.
CONSOLE SHIFT CONTROLS
Adjust (Figs. 7A4-13 and 14)
1. Disconnect shift cable from transmission selector lever
by removing nut from pin.
2. Adjust back drive linkage by following the procedures
under COLUMN SHIFT CONTROLS.
3. After adjusting column controls, unlock ignition and
rotate transmission range selector lever counterclockwise two
detent positions.
4. Set Console gearshift lever in NEUTRAL range and
move it forward against its stop in NEUTRAL.
5. Assemble shift cable and pin to transmission range
selector lever, allowing cable to position pin in slot of lever
and then install and tighten nut to 20 lb. ft. torque.
DOWNSHIFT CONTROL SWITCH
Adjust
C A U T I 0 N : If equ~pped with accessory floor
mats, adjust with mats in place.
1. With engine off, depress the downshift switch plunger
fully in the direction of arrow as shown (see Section 6D).
2. Then, fully depress the accelerator pedal to properly
"set" the downshift control switch.
NEUTRALIZER SWITCH
Adjust
Refer to Section 6D.
TRANSMISSION FLUID
FLUID LEVEL
The fluid level indicator is located in the filler pipe at
the right rear of the engine. To bring the fluid level from the
ADD mark to the FULL mark requires ONE PINT.
Fluid level should be to the FULL HOT mark with
transmission at normal operating temperature 180-200°F.
(80-92°C.). With fluid at room temperature 65" to 85°F. (20-
30"C.), the level should be between the two dimples located
below the "ADD" mark.
NOTE: In checking the oil, insert the dipstick in the
filter tube with the markings up (toward center of car).
Checking Procedure
To determine proper fluid level, proceed as follows:
CAUTION: The "FULL HOT" mark on the
dipstick is an indication of transmission fluid at
normal operating temperature of 18G20"E;: (80-
92°C). This temperature is only obtained after at
least I5 miles of high way dn'ving or equivalent of
city dn'ving.
The downshift switch is adjusted from inside the
driver's compartment in the following manner:
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