Chevrolet 1977 10 Series, Repair Manual, Page: 271 / 468

AUTOMATIC TRANSMISSION
(200)7A-35
IN T E R M E D IA TE SNAP IN T ER M ED IA TE
SE R VO CO V ER RING SER VO PISTON WASHER
Fig. 7A-1 4 4 A - -ln t e r m e d ia t e Servo-Exploded
NOTE:
G overnor shaft is not aligned with case hole,
if retaining ring cannot be installed.
5. Install governor retaining ring. Align ring gap with
an end showing in case slot.
Intermediate Band Anchor Pin
1. Inspect anchor pin for damage.
2. Install anchor pin, stem end first, making sure stem
locates in hole of interm ediate band lug (Fig. 7A-143A).
Intermediate Servo Piston Assembly
(Fig. 7A-144A)
I n s p e c tio n
NOTE:
Production transmissions may be built with
either two or zero oil seal rings on the band apply pin.
All service band apply pins will have two oil seal rings.
1. Inspect pin for damage and fit in case bore.
2. Inspect inner and outer piston seal rings for damage
and free fit in ring grooves. Do not remove unless replacing.
Fig. 7A-1 4 6 A ~ l n t e r m e d i a t e Band A p p l y Gages
3. Inspect spring.
4. Inspect interm ediate servo cover and piston
assembly for proper com bination and usage. (See Fig. 7A-
145A).
5. Check for proper interm ediate band apply pin as
follows:
a. Install J-25014-2 in interm ediate servo bore and
retain with interm ediate servo cover retaining ring, aligning
ring with gap at case slot (Fig. 7A-146A).
b. Install pin J-25014-1 into J-25014-2.
CAUTION:
Make sure the tapered pin end is
properly located against the band apply lug. Also,
make sure the band anchor pin is properly located
in the case and band anchor lug.
T. H. M. "2 00 " IN TER M ED IA TE SERVO COVER & PISTON USAGE - 1977
M O DEL
COVER
Id e n tifie d by Cast Part No. On Cover
PISTON
Identified by Cast Part No. On Piston
CU
CN
C Z
86 2 8 6 9 6
8630131
CX
*8 6 3 0 0 8 5
* * 8 6 3 0 0 8 3
CE
CR
8 6 2 8 1 3 4 8 6 2 8 1 1 2
CD
CY
8 6 2 8 1 3 3
8628111
NOTE:
* Intermediate servo cover, 8 6 3 0 0 8 5 , at start of production will be identified by the part
no. 86 2 8 6 9 6 cast on the cover with the letter 'A 1' stamped on it.
* * Intermediate servo piston, 8 6 3 0 0 8 3 , at start of production will be identified by the part
no. 8628111 cast on the cover with the letter " A " stamped on it.
J-25014-2
J-25014-1
DIAL INDICATOR
J-8001
Fig. 7A-1 45A--lntermediate Servo Cover and Piston Usage Chart