7A-1
THREE
SPEED
DEARBORN
MANUAL
TRANSMISSION
CONTENTS
OF
THIS
SECTION
SUBJECT PAGE
Description
. . 7A-1
Periodic
Service '. 7A-1
On
Car Adjustments
Linkage
Adjustment - Column Shift . . . 7A-1
Linkage
Adjustment - Floor Shift . . . . 7A-1
Minor
Repairs
Extension
Housing Bushing and Oil
Seal
Replacement 7A-1
Major
Repairs
Transmission
- Remove 7A-2
Input
Shaft Seal Replacement 7A-2
Transmission
- Disassemble . . 7A-6
SUBJECT PAGE
Shift
Lever
Shaft or Seal Replacement -
Mainshaft
Removed 7A-7
Input
Shaft Bearing Replacement -
Mainshaft
Removed . . 7A-8
Mainshaft
- Disassemble 7A-8
Transmission
- Assemble
Mainshaft
- Assemble 7A-8
Transmission
- Assemble 7A-10
Transmission
-
Install
in Vehicle 7A-13
Specifications 7A-13
Special
Tools . . . . 7A-14
DESCRIPTION
This
transmission is of the fully synchronized
type
with all gears,
except
the reverse gear, being in
constant mesh.
It
is used as the standard
3-speed
for Pontiac and
a
heavy duty
3-speed
for Tempest and
Firebird.
PERIODIC SERVICE
TRANSMISSION
No periodic service of the transmission is re-
quired
except
checking for leaks and proper
lubri-
cation level every
6000
miles.
If
there is evidence of leakage, leak should be
corrected and lubrication added as needed.
Refill
capacity is 2 3/4 pints.
Use SAE 90 Multi-purpose
Gear
Lubricant.
No
special
additive to this lubrication is required or
recommended.
SHIFT CONTROL
No periodic service of the shift control is re-
quired.
Certain
parts are lubricated on assembly
and
require further lubrication only when parts be-
come
dry and sticky.
ON
CAR
ADJUSTMENTS
LINKAGE ADJUSTMENT-COLUMN SHIFT
(Fig.
7A-IJ
1. Align upper and lower gearshift levers on
steering column assembly in neutral position by in-
serting
gage
pin in
hole
as shown in View A.
2. Loosen clamp screws at transmission gearshift
control rods.
3.
Position levers on transmission in neutral.
4. Retorque clamp screws to 20 lb. ft. and check
complete
shift pattern.
LINKAGE ADJUSTMENT-FLOOR SHIFT
(Figs.
7A-2, 7A-3, 7A-4)
1. Position selector lever in neutral position.
2. Loosen trunnion jam nuts on transmission gear-
shift control rods.
3.
Place transmission lever and bracket assembly
in
neutral position and install
gauge
pin as
illustrated.
4. Position levers on transmission in neutral.
5. Retorque trunnion jam nuts to 30 lb. ft.
6. Remove
gauge
pin and check
complete
shift
pattern for freeness of operation.
MINOR
REPAIRS
EXTENSION HOUSING BUSHING
AND
OIL
SEAL
REPLACEMENT
1. Remove drive shaft.
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