Chevrolet 1980 Light Duty Truck Repair Manual page 283

PUMP COVER TO DIRECT CLUTCH
NEEDLE BEARING
Fig. 7 A - 1 0 8 B - - P u m p C o v e r t o D i r e c t C l u t c h T o r r i n g t o n
B e a r i n g
a. Install torrington bearing, (fig. 7A -108B ) oil pump
gasket and using guide studs from J-3387 set install oil
pump. Install tw o pump to case bolts.
b. M ove transmission so that output shaft points down.
M ount a dial indicator so that plunger o f indicator is resting
on end o f the input shaft. J-5492 m ay be used to support
the dial indicator as shown in Figure 7A -109B . Zero the
indicator.
c. Push up on the transm ission output shaft and
observe the total indicator m ovem ent.
d. The indicator should read .010" to .044". If the
reading is w ithin limits, the proper selective fit washer is
being used. If the reading is not w ithin limits, it w ill be
necessary to rem ove the pump and change to a thicker or
thinner selective fit thrust washer, as required to obtain the
specified clearance. Repeat the above checking procedure.
Selective fit thrust washers are available in thicknesses
o f .066", .083" and .100".
25. Install new pump assem bly in case gasket.
F i g . 7 A - 1 0 9 B - - C h e c k i n g E n d P l a y f o r P r o p e r T h r u s t W a s h e r
S e l e c t i o n
A U T O M A T IC TR A N S M IS S IO N
26. Install new pump assem bly to case square cut oil
seal ring.
27. Install guide pins into case.
28. Install pum p assembly into case. Install attaching
bolts w ith new washer type seals.
If the input shaft can not be rotated as the pum p is
being pulled into place, the direct and forward clutch
housings have not been properly installed to index the faced
plates with their respective parts. This condition m ust be
corrected before the pump is pulled into place.
Speedometer Drive Gear and Extension
1. Place speedom eter drive gear retaining clip into hole
in output shaft.
2. Heat a new speedom eter drive gear using a heat lam p
or suitable heat m ethod.
3. A lign slot in speedom eter drive gear with retaining
clip and install.
4. Install extension housing to case square cut "O" ring
seal.
5. A ttach extension housing to case using attaching
bolts. Torque to 25 ft. lbs.
6. If necessary, install a new extension housing seal,
using seal installer J-5154 or J-21426 (fig. 7A -110B ).
Manual Linkage
1. If necessary, install a new m anual shaft to case lip
seal using 3/4" diameter rod, seat seal in case.
2. Install parking pawl, tooth toward the inside o f case,
into case.
3. Install parking pawl shaft into case and through
parking pawl.
4. Install parking pawl shaft retainer plug. D rive into
case using a 3/8" dia. rod, until retainer plug is .130" to
.170" below face o f case, then stake in three places.
J - 5 1 5 4
Fi g. 7 A - 1 1 0 B - l n s t a l l i n g E x t e n s i o n H o u s i n g S e a l
(3 5 0 )7 A-35
OVERHAUL M ANUAL