Chevrolet 1980 Light Duty Truck Repair Manual page 268

(3 5 0 )7 A-20 A U TO M A TIC TR A N S M IS S IO N
W O O D B L O C K S
F i g . 7 A - 6 5 B - - l n s t a l l i n g H u b L ip S e a l
2. Place pump body on w ood blocks and pry out
defective seal. Coat outer diameter o f new seal with a non­
hardening sealer and install seal using seal installer J -2 1359
to seat seal fully in counterbore.
3. Install pump drive gear and driven gear (fig. 7A-
66B).
4. Install direct clutch drum housing to pump cover
selective thrust washer over pump cover delivery sleeve.
Fig. 7 A -6 6 B -ln s ta llin g Pump Drive and Driven Gears
OVERHAUL MANUAL
J - 2 13 5 9
P U M P T O
C O N V E R T E R
HUB LIP SEAL
P U M P B O D Y
R E VE R SE \
D I RECT CLUTCH
OUTER |
CON V ER T ER F EED
F O R W A R D CLUTCH
DIRECT CLUTCH
PUMP BODY
F i g . 7 A - 6 7 B ~ P u m p B o d y O i l P a s s a g e s
5. Install three (3) direct clutch to pump hub hook type
oil seal rings. Install tw o (2) forward clutch to pum p hub
hook type oil seal rings.
If the (2) forward clutch-to-hub oil seals are teflon, be
sure to com press the seals slightly to "set" them, to insure
a tight fit on the hub. U se care w hen assembling the forward
clutch not to damage the seals.
N O TIC E:
C heck pump cover and body oil passages to
m ake sure they are not restricted (figs. 7A -67B and
7A -68B ), or dam age m ay occur.
6. Install interm ediate clutch piston inner seal and
outer seal on piston.
EXHAUST I NTERMEDI AT E CLUTCH
DIRECT CLUTCH
FOR W A R D CLUTCH
CONVER T ER FEED
REVERSE
DIRECT CLUTCH
OUTER
PUMP COVER AND STATOR SHAFT ASSEM BLY
Fig. 7 A -6 8 B -P u m p Cover Oil Passages
I NTERMEDIATE
CLUTCH
C O O L ER OUT
FROM RADI A TO R
C O O L E R IN
( TO RADI ATOR |
EX HAU ST
P UMP LIP S EA L DRAI N
PUMP LIP SEA L DRAIN
r ~ C O O L ER IN
| TO R ADI AT OR)
C O O L E R OUT
F ROM RADIATOR
INTERME DI ATE
CLUTCH