Inspection Of Control Valve; Assembly Of Control Valve; Installing Compressor Tool To Front Accumulator Piston; Removing Front Accumulator Piston And Spring - Pontiac Grand Prix Service Manual

INSPECTION OF CONTROL VALVE
1. Inspect all valves for scoring, cracking and free
movement of their respective bore.
2. Inspect bushing for cracks, scratches or distortion.
3. Inspect body for cracks or scored bores.
4. Check all springs for distortion or collapsed coils.
5. Clean governor oil screen in clean solvent.
ASSEMBLY OF CONTROL VALVE
1. Install front accumulator spring and piston into
valve body.
2. Install special tool J 2 1885 and compress spring and
piston and secure with retaining E-ring.
Fig. 7E-67 Installing Compressor Tool to Front
Accumulator Piston
3. Install 1-2 primary accumulator spring in lower left
bore.
6. From next bore, remove roll pin, 2-3 shift valve
spring, modulator valve bushing, 2-3 modulator valve, 4. Instal1 primary
3-2 intermediate spring and 2-3 shift valve.
5. Install 1-2 accumulator valve with s e m end out into
7. From next bore remove roll pin, bore plug, spring,
spacer and 3-2 valve.
8. At other end of assembly, top bore, remove roll pin
and bore plug, detent valve, detent regulator valve,
spring and spacer.
9. Remove the grooved retaining pin from the next
bore down, the bore plug, 1-2 secondary accumulator
spring, 1-2 accumulator valve, 1-2 accumulator bush-
ing, 1-2 primary accumulator valve and the 1-2
pnmary accumulator spring.
10. Remove the governor oil screen from the governor
oil feed hole (Fig. 7E-70).
Fig. 7E-68 Removing Front Accumulator Piston and
Spring
the 1-2 accumulator bushing and install the bushing
into the bore.
6. Install 1-2 secondary accumulator spring and bore
plug. Compress plug and install grooved retaining pin
from cast surface side fo the valve body, with the
grooves entering the pin hole last. Tap pin with
hammer until flush with cast surface.
7. In next bore up, install detent spring and spacer.
Compress spring and secure with small screwdriver
(Fig. 7E-7 1).
8. Install detent regulator valve, wide land first.
9. Install detent valve, narrow land first.
10. Install bore plug (hole out), depress spring by
pressing in on plug and install roll pin. Remove
screwdriver.
11. In lower right hand bore, install 3-2 valve.
12. Install 3-2 spring, spacer, bore plug (hole out) and
roll pin.
13. In next bore up, install 2-3 valve, stem end out, and
3-2 intermediate spring.
14. Install 2-3 modulator valve into bushing and install
both parts into valve body bore.
15. Install 2-3 valve spring and roll pin.
16. In next bore up, install 1-2 valve, stem end out.