Table of Contents
Advertisement
CLUTCH AND TRANSMISSIONS 7-37
LI. - LI Range can be selected at any vehicle speed,
and the transmission will shift to second gear
and remain in second until vehicle speed is re-
duced to approximately 40 MPH, .depending on
axle ratio. LI Range position prevents the trans-
mission from shifting out of first gear.
It is very important that any communication concerning
the Turbo Hydra-Matic always contain the transmission
serial number and that all transmission parts returned
to Chevrolet Motor Division always be tagged with the
transmission serial number.
MAINTENANCE AND ADJUSTMENTS
TRANSMISSION FLUID
Transmission fluid level should be checked with trans-
mission warm and selector lever in " P " Park position,
every time engine oil level is checked or as specified in
Section 0 when engine oil is changed.
CAUTION:
Since the Turbo Hydra-Matic trans-
mission is very sensitive to oil level, special
precautions should be taken when checking the
oil level, to insure against an overfifE
Transmission fluid should be changed as specified in
Section 0.
FLUID LEVEL INDICATOR
The fluid level indicator is located in the filler pipe at
the right rear corner of the engine. To bring the fluid
level from the add mark to the full mark add 1 pint.
Fluid level should be to the full mark with transmission
at normal operating temperature. With cold fluid the
level should be at the add mark or slightly below.
SHIFT CONTROL LINKAGE ADJUSTMENT
Adjust linkage as shown below and in Figure 2.
1. The shift tube and lever assembly must be free in the
mast jacket See Section 9 for alignment of steering
column assembly if necessary.
2. To check for proper shift linkage adjustment, lift the
transmission selector lever towards the steering
wheel. Allow the selector lever to be positioned in
drive (D) by the transmission detent.
NOTE:
Do not use the indicator pointer as a
reference to position the selector lever. When
performing linkage adjustment, pointer is ad-
justed last.
3. Release the selector lever. The lever should be in-
hibited from engaging low range unless the lever is
lifted.
4. Lift the selector lever towards the steering wheel,
and allow the lever to be positioned in neutral (N) by
the transmission detent.
5. Release the selector lever. The lever should now be
inhibited from engaging reverse range unless the
lever is lifted.
6. A properly adjusted linkage will prevent the selector
lever from moving beyond both the neutral detent,
and the drive detent unless the lever is lifted to pass
over the mechanical stop in the steering column.
See schematic diagram.
7. In the event that an adjustment is required, place the
selector lever in drive (D) position as determined by
the transmission detent. See Steps 2 and 3.
8. Loosen the adjustment swivel at the cross-shaft, and
rotate the transmission lever so that it contacts the
drive stop in the steering column.
9. Tighten the swivel and recheck the adjustment. See
Steps 2 and 6.
-
l(h Readjust indicator needle if necessary to agree with
the transmission detent" positions. See Section 9.
11. Readjust neutral safety switch if necessary to pro-
vide the correct relationship to the transmission de-
tent positions. See Section 12.
12. When properly adjusted the following conditions must
be met by manual operation of the steering column
shift lever:
a. From reverse to drive position travel, the trans-
mission detent feel must be noted and related to
indicated position on dial.
b. When in drive and reverse positions, pull lever
rearward (towards steering wheel) and then re-
lease. It must drop back into position with no
restrictions.
NEUTRAL SAFETY SWITCH ADJUSTMENT
The neutral safety switch must be adjusted so that the
car will start in the park or neutral position, but will not
start in the other positions. For replacement refer to
Section 12 of this Manual.
DRAINING AND REFILLING TRANSMISSION
Drain oil immediately after operation before it has had
an opportunity to cool.
To drain oil proceed as follows:
1. Remove bottom pan attaching screws, pan, and gas-
ket.
2. Remove oil strainer. Remove "O" ring seal from
pick-up pipe and discard.
3. Discard strainer if dirty.
4. Install new "O" ring seal on pick-up pipe and install
strainer and pipe assembly.
5. Thoroughly clean bottom pan.
6.. Affix new gasket to bottom pan with petroleum jelly.
7. Install bottom pan with attaching screws and torque
to specifications;
8. If only the pan has been removed, pour approximately
7-1/2 pints of fluid into the transmission. If the
valve body has also been removed use 9-1/2 pints.
After a complete overhaul approximately 19 pints
are required. Be sure container, spout, or funnel is
clean.
9. Start engine and let idle (carburetor off fast idle
step). Place selector lever in P position and apply
hand brake.
10. With transmission warm (approximately 150°F), add
fluid to bring level to full mark on indicator.
CAUTION:
Do not overfill. Foaming will re-
sult.
CHEVROLET CHASSIS SERVICE MANUAL
Advertisement
Table of Contents
