Installing Extension To Case - Pontiac Grand Prix Service Manual

FOUR-SPEED MUNCIE MANUAL TRANSMISSION
7D-13
21. Attach a dial indicator as shown in Fig. 7D-24 and
check end play of the countergear. If end play is
greater than .025", new thrust washers must be
installed.
22. Install cage and the seventeen (17) roller bearings
into main drive gear, using heavy grease to hold the
bearings and cage in place.
23. Install main drive gear and pilot bearings through
the side cover opening and into position in transmis-
sion front bore.
24. Place gasket in position on front face of rear
bearing retainer.
25. Install the fourth speed synchronizing ring on main
drive gear with the notches toward the rear of the
transmission.
26. Position the. reverse idler gear thrust washer
(tanged) on the machined face of the ear cast in the
case for the reverse idler shaft and hold with heavy
grease. Position the front reverse idler gear next to the
thrust washer, with the hub facing toward rear of the
case.
CA UTION: Before attempting to install mainshap
assembly to case, slide the
3-4
synchronizing clutch
sleeve forward into fourth speed &tent position (Fig.
70-1 1).
27. Lower the mainshaft assembly into case, making
certain notches on the fourth speed synchronizing ring
correspond to keys in the clutch assembly (Fig. 7D-25).
28. With the guide pin in rear bearing retainer aligned
with hole in rear of case, tap rear bearing retainer into
position with a soft hammer.
29. From rear of the case, insert the rear reverse idler
gear, engaging the splines with the portion of the front
gear inside the case.
30. Using heavy grease, place gasket in position on
rear face of rear bearing retainer.
31. Install the remaining flat thrust washer on reverse
idler shaft. If new idler shaft is being used, drive out
the roll pin and press it into new shaft.
32. Install reverse idler shaft, roll pin and thrust
washer into gears and front boss of case. Make sure to
pick up front tanged thrust washer.
NOTE: Rollpin should be in a verticalposition.
33. Position reverse gear at rear of spline, pull reverse
shifter shaft to left side of extension and rotate shaft to
bring reverse shift fork forward in extension (reverse
detent position). Start the extension onto the transmis-
sion case (Fig. 7D-26), while slowly pushing in on the
shifkr shaft to engage the shift fork with the reverse
gear shift collar. Then pilot the reverse idler shaft into
the extension housing, permitting the extension to slide
onto the transmission case.
34. Install 6 extension and retainer-to-case attaching
bolts. Torque upper 3 bolts to 20 lb. ft.; lower 3 bolts
to 30 lb. ft.
35. Push or pull reverse shifter shaft to line up groove
in the shaft with holes in the boss and drive in the lock
pin. Install shifter lever.
36. Press front bearing onto main drive gear (snap ring
groove to front) and into case, until several main drive
gear retaining nut threads are exposed.
37. Lock transmission up by shifting into two gears.
Install main drive gear retaining nut on the gear shaft
and draw it up tight, using Tool J 933. Be sure bearing
fully seats against shoulder on gear, torque retaining
nut to 40 lb. ft. and lock in place by staking securely
into main drive gear shaft hole with a center punch.
STAMP VEHICLE IDENTIFICATION
NUMBER CONSISTING OF THE
FIGURE 2 FOLLOWED BY THE
LAST 8 DIGITS OF CAR SERIAL
NUMBER
Fig.
7D-26
Installing Extension to Case. Fig. 7D-27 Vehicle Identification Number Location