Chevrolet 1977 10 Series, Repair Manual, Page: 241 / 468

AUTOMATIC TRANSMISSION
(200)7A-5
J-25013-5
FRONT U N IT END PLAY CHART
THICKNESS ID E N T IFIC A TIO N
Number and/or Color
1.66-1.77mm (0.065' -0.070") 1
1.79-1.90mm (0.070' -0.075") 2
1.92-2.03mm (0.076' -0.080") 3 - Black
2.05-2.16mm
(0.081' -0.085") 4 - Light Green
2.18-2.29mm (0.086' -0.090") 5 - Scarlet
2.31-2.42mm (0.091' -0.095") 6 - Purple
2.44-2.55mm (0.096' -0.100") 7 - Cocoa Brown
2.57-2.68mm (0.101' -0.106") 8 - Orange
2.70-2.81 mm (0.106' -0.111") 9 - Yellow
2.83-2.94mm (0.111' -0.116") 10 - Light Blue
2.96-3.07mm (0.117' -0.121") 11
3.09-3.20mm (0.122' -0.126") 12
Fig. 7A-1 8 A —In sta ll in g T o o ls on Rear End of Case
The identification ring is located on the band end of
the pin.
f. Remove tools J-25014-2 and J-25014-1.
FRONT UNIT PARTS
Removal
1. Check front unit end play as follows:
a. Install J-25013-1 sleeve on output shaft first; then
bolt J-25013-5 on end of cae (Fig. 7A-18A).
b. T urn transm ission to vertical position, pump side up.
c. Remove pump to case bolt and washer and install
278mm (11") long bolt and locking nut as shown (Fig. 7A-
19 A).
d. Push turbine shaft downward.
e. Install J-25022 on J-24773 tool and secure on end
of turbine shaft (Fig. 7A-19A).
f. M ount dial indicator and clamp assembly on bolt,
positioning indicator point against cap nut of J-24773.
g. Move output shaft upw ard by turning the adjusting
screw on J-25013-5 until the white or scribed line on sleeve
J-25013-1 begins to disappear (Fig. 7A-18A), then set dial
indicator to zero.
h. Pull J-24773 on turbine shaft upward and read end
play. Front unit end play should be 0.56mm-1.30mm
(.022"-.051").
Fig. 7 A - 2 0 A ~ F r o n t U n it End Play W a s h e r C hart
NOTE:
Selective washer controling this end play is
located between the output shaft and turbine shaft. If
more or less washer thickness is required to bring end
play within specifications, select proper washer from
the chart shown in figure 7A-20A.
1. Remove dial indicator clamp assembly, J-24773 and
J-25022 (Fig. 7A-19A).
j. Do not remove J-25013-5 or J-250131-1.
2. Pump:
a. If necessary, remove pum p oil seal and discard (Fig.
7A-21A).
b. Remove remaining pum p to case bolts and washers;
discard washers.
c. Using J-24773 tool, remove pum p assembly, pum p
to case gasket and discard gasket (Fig. 7A-22A).
3. Forw ard and D irect Clutch:
a. G rasp turbine shaft and remove direct and forward
clutch assemblies (Fig. 7A-23A).
b. Lift direct clutch assembly off forward clutch
assembly.
NOTE:
The direct-to-forw ard clutch thrust washer
may stick to the end of the direct clutch housing when
it is removed from the forw ard clutch housing.
4. Remove interm ediate band assembly (Fig. 7A-24A).
5. Remove band anchor pin (Fig. 7A-25A).
Fig. 7A-19A--Checking Front Unit End Play
Fig. 7 A-2 1 A -Removing Oil Pump Seal