Pontiac tempest 1968 Service Manual page 390

THREE SPEED D E A R B O R N M A N U A L TRANSMISSION 7A-9
I N S E R T H U B A N D S L E E V E A L I G N M E N T M A R K S B L O C K I N G
B L O C K I N G I N S E R T H U B S L E E V E I N S E R T S P R I N G
R I N G
Fig. 7 A - 1 4 Exploded V i e w of Second and Third Synchronizer
small end over the spring and the shoulder on the
inside of the hub.
4. Slide the sleeve onto the hub until the detent
is engaged.
5. Install the front insert spring in the hub.
6. Install one insert spring (Fig. 7A-14) into the
groove of the second and third speed synchronizer
hub, making sure that all three insert slots are fully
covered (Fig. 7A-18).
7. With alignment marks on the hub and sleeve
aligned, start the hub into the sleeve.
NOTE: There is a possibility of not having align­
ment marks on hub and sleeve. If marks are there,
they must be aligned.
8. Place the three inserts, in the slots, on top of
the retaining spring and push the assembly together.
9. Install the remaining insert spring so that the
spring ends cover the same slots as does the other
spring.
NOTE: Do not stagger the springs.
10. Place a synchronizer blocking ring on each end
of the synchronizer sleeve.
11. Lubricate main shaft splines and machined
surfaces with transmission lubricant.
12. Using an arbor press, install the first and
reverse synchronizer hub and sliding gear onto the
mainshaft, with the teeth end of the gear facing
toward the rear of the shaft (Fig. 7A-19). When
pressed into place, install the snap ring (Fig. 7A-15).
13. Coat the tapered machine surface on the first
gear with grease. Place the blocking ring on the
greased surface.
14. Slide the first gear onto the main shaft, with
the blocking ring toward the rear of the shaft. Ro­
tate the gear as necessary to engage the three
notches in the blocking ring with the synchronizer
inserts. Secure the first gear with thrust washer and
snap ring.
Q K I A D B L O C K , N G
BLOCKING SNAP
R I N G
J T
3 S N A P R I N G R I N G
R I N G
T H R U S T
G E A R W A S H E R
S Y N C H R O N I Z E R
S P E E D O M E T E R
REAR DRIVE GEAR
B E A R I N G \
1ST G E A R
' R E V E R S E G E A R
A N D S L E E V E
S N A P R I N G S
F i g . 7 A - 1 5 Exploded View of Mainshaft