Front Gear Parts; Rear Sun Gear And Input Drum; Front Sun Gear - Chevrolet 1980 Light Duty Truck Repair Manual

W AVE RELEASE
SPRING
Figure 7A 1-93 Installing Lo and Reverse Clutch Wave Release
Spring
Figure 7A1-94 Installing Lo and Reverse Clutch Retaining
Snap Ring
Figure 7A1-95 Proper Location of Low and Reverse Housing to
Case Spacer
LO & REVERSE
CLUTCH HOUSING
6 07 C 82
LO & R E V E R S E
C L U T C H H O U S IN G
T O CASE SPACER
607C46
AUTOMATIC TRANSMISSION (200) 7A1-21
d. R em ove tool (input drum and rear sun gear).
e. Loosen adjusting screw on
to install snap ring.
f. Repeat the above steps if low and reverse clutch
housing is not fully seated past case snap ring groove.
4. Install low and reverse clutch housing to case snap
ring, flat side against clutch housing (beveled side up).
Position snap ring gap on opposite side o f parking pawl rod.

FRONT GEAR PARTS

Rear Sun Gear and Input Drum (Figure
7A1-99)
Inspection
1. Inspect rear sun gear for cracks, splits, damage
spline, worn gear or journals and plugged lubrication holes.
(Figure 7A1-99).
2. Inspect rear sun gear bushing for dam age or scoring.
3. If necessary, rem ove input drum to rear sun gear
snap ring and rem ove sun gear from input drum.
4. Inspect input drum for damage. (Figure 7A1-99).
5. Inspect 4 tanged input drum to low and reverse
clutch housing thrust washer for scoring or distorted tangs.
(Figure 7A 1-99).
6. If damaged, replace rear sun gear to input drum snap
ring.
Reassem bly
1. Install rear sun gear into input drum, spline side first,
and retain with snap ring. (Figure 7A 1-99).
2. Install 4 tanged thrust washer on input drum over
sun gear end; align tangs into input drum and retain with
petrolatum. (Figures 7A 1-99 and 7A 1-100).
3. Install rear sun gear and input drum assembly.
(Figure 7A 1-98).

Front Sun Gear

1. Inspect front sun gear splines and teeth for damage
or wear.
2. Inspect m achined face for pitting, scoring or damage.
3. Install front sun gear face with the identification
mark (a drill spot or groove) against input drum to rear sun
gear snap ring. (Figure 7A 1-102). See Figure 7A 1-101 for
identification marks.
4. Thoroughly clean, air dry and inspect front sun gear
to front carrier thrust race and thrust bearing for pitted or
rough conditions.
5. Install front sun gear to front carrier thrust bearing
and race assembly with roller thrust bearing against the
front sun gear. (Figure 7 A 1-103).
NOTICE:
This thrust bearing requires only 1 thrust
race.
Housing
J - 2 5 0 1 3-5 on output shaft