Chevrolet 1980 Light Duty Truck Repair Manual page 252

(350)7A -4 A U TO M A TIC TR A N SM IS S IO N
Fi g . 7 A - 6 B - - C h e c k i n g C o n v e r t e r E n d C l e a r a n c e
Converter End Clearance Check (Figs. 7A-5B,
7A-6B)
1. Fully release collet end o f T ool J-21371 -8.
2. Install collet end o f T ool J-2 1371-8 into converter
hub until it bottoms; then tighten cap nut to 5 ft. lbs. (fig.
7A -5B ).
3. Install T ool J-21371-3 and tighten hex nut to 3 ft.
lbs. (fig. 7A -6B ).
4. Install D ial Indicator J-8001 and set it at "zero"
while its plunger , rests on the cap nut o f T ool J-21371-8.
5. Loosen hex nut w hile holding cap nut stationary.
W ith the hex nut loosened and holding T ool J-21371-3
firm ly against the converter hub, the reading obtained on
the dial indicator will be the converter end clearance. End
clearance should be less than .050". If the end clearance is
.050" or greater, the converter m ust be replaced.
Fig. 7A-7B--Removing Extension Housing Lip Seal
J-25020
EXTENSION HOUSING
LIP SEAL
Fi g. 7 A - 8 B - R e m o v i n g E x t e n s i o n H o u s i n g B u s h i n g
R E M O V A L OF E X T E N S IO N , SP E E D O M E TE R
D R IV E N GEAR, G O V E R N O R , O IL PA N A N D
SCREEN
1. R em ove four housing to case attaching bolts.
2. R em ove extension housing form case and remove
square cut "0" ring seal from extension housing.
3. R em ove extension housing lip seal using screw driver
(fig. 7A -7B ).
4. If extension housing bushing is to be replaced,
collapse bushing (fig. 7A -8B ) and refer to Figure 7A -98B
for installation.
5. Install speedom eter drive gear remover tool J -2 1427-
01 and J-9539 bolts w ith J-8105 or suitable puller on output
shaft and rem ove speedom eter drive gear. R em ove retaining
clip.
6. U sing a screwdriver and hamm er, gently tap along
governor cover lip (fig. 7A -9B ), rem ove governor cover (fig.
7A -10B ). D o not attempt to pry the screwdriver between
the case and governor cover as this could cause damage to
the case.
Fig. 7A-9B-R em ovin g Governor Cover
EXTENSION HOUSING
BUSHING