Chevrolet 1980 Light Duty Truck Repair Manual page 340

(400)7A -54 A U TO M A TIC TR A N SM IS S IO N S
F i g . 7 A - 1 7 5 C —I n s t a l l i n g D e t e n t S o l e n o i d a n d G a s k e t
4. Install control valve spacer plate and control valve
to spacer plate gasket (gasket identified with a a "VB" near
front servo).
5. Install detent solenoid gasket.
6. Install detent solenoid assembly w ith connector
facing outer edge o f case (Fig. 7A -175C ). D o not tighten
bolts at this time.
7. Install front servo spring and spring retainer into
transm ission case.
8. Install retainer pins in front servo pin groove and
install pin into case so that tapered end contacts band. Make
certain retainer ring is installed in servo pin groove.
9. Install seal ring on servo piston, if removed, and
install on servo pin with flat side o f piston positioned toward
bottom pan. (Figure 7A -176C ).
The teflon ring allow s the front servo piston to slide
very freely in the case. The free fit o f the ring in the bore
is a normal characteristic and does not indicate leakage
m
SERVO SPRING
RETAINER
Fig. 7A-1 76 C — Installing Front Servo Piston, Washer, and Pin
GASKET
SERVO PISTON
RETAINER RING
SERVO PIN
SERVO PISTON
SPRING
Locate feeler stock
on edge of front servo I GUIDE PINS,
piston so front accumulator
oiston can enter bore
^ FEELER
m
STOCK
Fig. 7 A - 1 7 7 C - - F r o n t S e r v o G r o u p - - l n V e h i c l e I n s t a l l a t i o n
during operation. The teflon ring should only be replaced
if it show s damage or if evidence o f leakage during operation
exists.
If transm ission is in the vehicle, assemble front servo
group as shown in Figure 7A -61C and install this group o f
parts into front servo bore in case and hold. Slip a length
o f straight, clean feeler gage or shim stock (about .020")
between spacer plate and front servo piston to tem porarily
retain front servo group. Figure 7A -177C .
10. Install "O" ring seal on electrical connector.
11. Lubricate and install electrical connector w ith lock
tabs facing into case, positioning locator tab in notch on side
o f case (Fig. 7A -178C ).
12. Install detent wire to electrical connector (Fig. 7A -
12C).
CASE CONNECTOR SLEEVE
Fi g. 7 A - 1 7 8 C - l n s t a l l i n g E l e c t r i c a l C o n n e c t o r a n d " 0 " R i n g
FRONT # IS
SERVO • I
I *
PISTON
SPACER
PLATE
S e a l