Chevrolet 70 Series 1970 Service Manual page 657

TRANSMISSIONS AND CLUTCHES 7-58
IMPORTANT: An e x c e s s iv e amount of lubri­
cant applied to r e le a se bearing could spin off the
bearing and damage other clutch com ponents.
CLUTCH RELEASE MECHANISM
(YOKE-TYPE)
Check bearing for roughness or n o ise by ro­
tating bearing race while applying light p r e ssu r e .
R eplace the bearing if it is rough, noisy, or when
damaged.
Rem oval (Refer to F ig. 6)
1. Rem ove r e le a se le v e r from clutch r e le a se
yoke c r o ss shaft.
2. D isconnect flex ib le lubrication tube from
top of r e le a se bearing support. Rem ove two r e ­
taining springs from top of bearing support. Slide
r e le a se bearing and support assem bly off end of
tra n sm issio n bearing cap.
Figure J —13-Inch Dual Disc Clutch (Typical)
le a se yoke to c r o ss shaft, then drive the yoke to
one sid e to expose two drive k ey s. R em ove keys,
then drive shaft out of yoke and rem ove from the
housing.
Installation (R efer to F ig. 6)
clutch housing, then in sert r e le a se c r o ss shaft
through one sid e of clutch housing, through re le a se
yoke and out through opposite sid e of housing.
yoke into p lace with k eys engaging keyway in yoke.
Do not tighten bolts until after r e le a se bearing and
support assem b ly is assem b led to bearing cap.
support for worn condition. Buttons can be p r e sse d
out or into support if n ec essa ry .
1 Engine Crankshaft
2 P ilo t Bearing
3 D riven D isc A ssem bly (Front)
4 Engine Flywheel
5 D rive Ring
D riven D isc A ssem bly (Rear)
6
7 N eedle B earing R ollers
R elea se L ever Pin
8
9 Yoke Pin
10 Lock Plate
11 Adjusting Nut
12 R elea se L ever
13 R elea se Bearing
14 R elea se B earing Support A ssy .
15 T ran sm ission B earing Cap
16 R elea se Fork Retainer Spring
17 R elea se Fork B all Stud
18 R elea se Fork
19 Clutch Housing
20 R elea se Fork Boot
21 P r e ssu r e Spring
22 Clutch Cover
23 P r e ssu r e Plate
24 Interm ediate Plate
3. Rem ove two cap sc rew s which attach re­
1. Hold clutch r e le a se yoke in p osition in
2. Install two keys in c r o s s shaft, then move
3. Examine contact buttons on e a r s of bearing
4. Slide r e le a se bearing and support assem b ly
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL
T-6681