Interm Ediate Servo P Is To N; Disassem Bly; Reassem Bly - Chevrolet 1980 Light Duty Truck Repair Manual

7A1-40 AUTOMATIC TRANSMISSION (200)
e. A pply 12 N *m (100 lb. in.) o f torque to hex nut on
side o f gage. Slide dial indicator over gage pin J-25014-1.
(Figure 7A 1-160). Read dial indicator and see chart below
for proper size.
IN T E R M E D IA T E B A N D APPLY PIN
SE L E C T IO N C H A R T
D I A L I N D I C A T O R T R A V E L
.0 - ,72m m (.0 -.029")
.72mm - 1.44m m (.0 2 9 " .057" )
1.44mm - 2.16m m (.0 5 7 "-.0 8 6 ")
2.16m m - 2.88m m (.0 8 6 "-.1 1 4 ")
Figure 7 A 1 -159 Intermediate Band Apply Pin Chart
Figure 7A 1 -16 0 Intermediate Band Apply Gages
Figure 7A 1 -161 Removing Intermediate Servo Spring Retainer
from Apply Pin
NOTICE: D ial indicator travel is reversed, m aking the
indicator readings backwards. On an indicator that
ranges from 0-100, a ,5mm (.020") travel will read 2mm
(.080"), a 1.5mm (.060") travel will read 1mm (.040").
The identification ring is located on the band end o f the
pin.
f. R em ove retaining ring and band apply pin gages. If
new apply pin or replacement o f piston is required, proceed
as follows:
A P P L Y PIN I D E N T I F I C A T I O N
1 Ring
2 Rings
3 Rings
Wide Band
9 B 7 A 6
SNAP RING
9B7A12

Disassem bly

1. U sing J-22269-01, com press interm ediate servo
piston spring. (Figure 7A 1-161).
2. U sing small flat
intermediate pin to piston snap ring.
3. R em ove J-22269-01 and separate band apply pin,
spring and washer from interm ediate servo piston.

Reassem bly

1. Install retainer on band apply pin. Figure 7A 1-161.
2. Install snap ring on band apply pin. Figure 7A 1-161.
3. Install band apply pin, retainer end first, through
intermediate servo pistons, Figure 7A 1-162.
4. If removed, install new intermediate servo piston,
inner and outer seal rings. M ake sure cut ends are assembled
in the sam e relationship as cut, Figure 7A1-132. M ake sure
rings are seated in the grooves to prevent damage to the
rings. Retain with petrolatum.
5. Lubricate with petrolatum and install new seal ring
on intermediate servo cover.
NOTICE:
The intermediate servo cover seal rings m ust
be well lubricated with petrolatum to prevent damage
or cutting o f ring.
6. Install intermediate servo piston assembly into
interm ediate servo cover.
7. Install intermediate servo assem bly into case, Figure
7A 1-162. M ake sure the tapered end o f the band apply pin
is properly located against the band apply lug.
NOTICE:
The intermediate servo cover seal rings must
be w ell lubricated with petrolatum to prevent damage
or cutting o f ring.
8. U sing tw o oil pan bolts, install J-28653 on case and
depress servo cover, Figure 7A 1-163.
9. Install servo cover retaining ring. A lign ring gap with
an end showing in case slot.
NOTICE:
Make sure the tapered end o f the band apply
pin is properly located against the band apply lug.
Low and Reverse Clutch Housing to
Case Cup Plug and Seal (Figure 7A1-
164)
1. Install new cup plug and seal assembly, w ith seal end
first, into hole in case.
2. U sing a 10 mm (3 /8 " ) diameter m etal rod and
hammer, drive cup plug and seal assembly until it seats
against the Lo and Reverse clutch housing. Figure 7A 1-164.
ELECTRICAL CONNECTOR
1. Lubricate with petrolatum and install new "0"-ring
seal on the case connector.
2. Install electrical connector with lock tabs facing into
case, positioning locator tab in notch on side o f case. (Figure
7A 1-164A )
edge screwdriver, rem ove