Chevrolet 1980 Light Duty Truck Repair Manual page 271

Fi g . 7 A - 7 6 B ~ R e m o v i n g D i r e c t C l u t c h O u t e r a n d I n n e r S e a l s
9. R em ove direct clutch piston outer seal and inner seal
(fig. 7A -76B).
10. R em ove direct clutch piston center seal from drum
(fig. 7A -77B).
Inspection
1. Inspect drive and driven clutch plates for signs o f
burning, scoring or wear.
2. Inspect seventeen (17) springs for collapsed coils or
signs o f distortion.
3. Inspect piston for cracks.
4. Inspect clutch housing for wear, scoring, open oil
passages and free operation o f ball check.
5. Inspect roller clutch inner and outer race for
scratches or indentations.
Fig. 7A-77B--Removing Direct Clutch Piston Center Seal
A U T O M A T IC T R A N S M IS S IO N
.0 20" PIANO WIRE CRIMPED
IN T O COPPER TUBIN G
DIRECT CLUTCH H O U S I N G
Fi g. 7 A - 7 8 B - l n s t a l l i n g D i r e c t C l u t c h P i s t o n
6. Inspect roller cage for wear and roller springs for
distortion.
Reassembly
1. Install new direct clutch piston outer seal and inner
seals.
2. Install new direct clutch piston center seal on drum
w ith lip facing upward.
3. Install direct clutch piston into housing with aid o f
a feeler gage or a piece o f .020" piano wire crim ped into
copper tubing (fig. 7A -78B ).
4. Install seventeen (17) clutch return coil springs.
5. Install piston return spring seat. Compress spring
seat with tool J-23327 and install retaining ring (fig. 7A-
79B).
Fi g. 7 A - 7 9 B - l n s t a l l i n g D i r e c t C l u t c h S p r i n g s , S p r i n g S e a t a n d
R e t a i n i n g R in g
(350)7A -23
OVERHAUL MANUAL