Four-Speed Muncie Manual Transmission - Pontiac Grand Prix Service Manual

FOUR-SPEED MUNCIE M A N U A L TRANSMISSION
CONTENTS OF THIS SECTION
SUaTEC T PAGE SUBJECT PAGE
. . . . . . . . . .
Description
. . . . . . .
Periodic Service
. . . . . . . .
Transmission
. . . . . . . .
Shift Control
. . . . .
On Car Adjustments
Floor Shift and Rack Drive
. . . . . . . .
Minor Repairs
Speedometer Driven Gear
.
Transmission Extension Oil
Transmission Side Cover.
.
Major Repairs
. . . . . . . .
. . . . .
. . . . .
. . . . .
. . . . .
. . . . .
Linkage.
. . . . .
. . . . .
Seal
.
.
. . . . .
. . . . .
Transmission
-
Remove
. . . . . . . . . .
.7D-5
. . . . . . .
Transmission
-
Disassemble. .7D-7
Reverse Shifter Shaft and Oil Seal 7D-
9
Extension Case Bushing and Oil Seal
-
R
& R .
. . . . . . . . . . . . . . . . . .
.7D-10
Clutch
Keys
and Springs
. . . . . . . . . .
.7D- 10
Transmission
-
Cleaning and Inspection
.
.7D- 10
Transmission
-
Assemble
. . . . . . . . .
.7D-
11
Transmission
-
Install
. . . . . . . . . . .
.7D- 14
Specifications
. . . . . . . . . . . . . . . . .
.7D- 14
Special Tools
. . . . . . . . . . . . . . . . .
.7D- 15
DESCRIPTION ON CAR ADJUSTMENTS
FLOOR SHIFT AND BACK DRIVE LINKAGE (Figs.
The Muncie 4-speed transmission is used with all eight
cylinder engines and Tempest six cylinder engines
70-1 or 7D-2 and 7D-3A or -38)
when a 4-sieed transmissiin is specked. It ca; be
distinguished from the Saginaw 4-speed in that the
1. Position floor shift control lever in Neutral position.
reverse lever on the Muncie is mounted in the
2.
adjusting s w i v e l ~ l a m p on gearshift
extension housing, where on the Saginaw it is mounted
rod (Fig. 7D-3A or -3B).
in the side cover.
3. Tempest and Grand Prix
-
Loosen trunnion jam
For all models, the steering column lock requires that
nuts uY,t and ,,Z,t on transmission
rods
the transmission be in "Reverse" gear before the
(view
of Fig. 7D-I).
ignition key may be removed. Also, the clutch safety
&itch wili not- permit engine cranking unless th;
~ i r ~ b i r d
-
bosen trunnion jam nuts
t ~ v
and
"ztt
on
pedal is far
transmission control rods (1st and 2nd and Reverse)
disengage the clutch.
and disconnect trunnion "Y" from its shifter assembly
PERIODIC SERVICE
lever (view "A" of Fig. 7D-2).
TRANSMISSION
4. Insert a .250-249" diameter gage pin into shifter
assembly (view "B" of Figs. 7D-1 or 7D-2).
No periodic service of the transmission is required
5. If shift control lever is misaligned to its floor pan
except checking for leaks and proper lubricant level
(console) opening (view "C" of Figs. 7D-1 or 7D-2):
every 60 days.
a. With console
-
Loosen attaching bolts, shiftcr
If there is evidence of leakage, the leak should be
assembly to shifter support, align shifier assembly to
specifications shown in view "C" and tighten attaching
corrected and lubricant added, if needed. Refill
bolts to spedfied torque (view ttB,,).
capacity is 2 1 /2 pints.
Remove filler plug at side of case and add SAE 90
b. Except console
-
Loosen attaching bolts, shifter
multi-purpose gear lubricant. Lubricant level should
assembly to shifter support, align shiftcr assembly
be approximately level with bottom of filler plug hole.
centrally in its floor boot and tighten attaching bolts to
Install plug.
specified torque (view "B").
SHIFT CONTROL
6. 'Tempest and Grand Prix
-
Position transmission
shifter levers (1st and 2nd, 3rd and 4th and Reverse) in
Neutral position and tighten jam nuts "X", "Y" and
No periodic service of the shift control is required.
"Z" to 30 Ib. ft.
Certain parts are lubricated on assembly and require
further lubrication only when parts become dry and
Firebird
-
Position transmission shifter levers (1st and
sticky.
2nd, 3rd and 4th and Reverse) in Neutral position and