Accumulator - Buick LeSabre 1965 Service Manual

SUPER TURBINE " 4 0 0 '
DISASSEMBLY & ASSEMBLY 5 - 1 1 9
Figure 5-576
4. Install outer and inner oil
rings on accumulator piston, if
removed, and assemble into bore
of servo piston.
5 - 1 8 CONTROL VALVE
ASSEMBLY,
DISASSEMBLY,
INSPECTION, AND
REASSEMBLY
a. Disassembly
1. Position control valve assem-
bly with cored face up and servo
pocket nearest operator.
2. Remove manual valve from
upper bore.
3. Install special tool J-21885, on
accumulator piston valve and re-
r-RETAINING "E" RING
\ ^OIL SEAL RING
ZCUMULATOR SPRING
^-ACCUMULATOR PISTON
move retaining ring. See Figure
5-576.
4. Remove front accumulator pis-
ton and spring. See Figure 5-577.
5. On the right side, top bore,
remove the retaining pin, 1-2
modulator bushing, 1-2 regulator
valve, and 1-2 regulator spring.
See Figure 5-582.
6. Remove the 1-2 detent valve
and 1-2 valve. See Figure 5-582.
7. From the next bore, remove
the retaining pin and 2-3 valve
spring, 2-3 modulator bushing
valve, and 3-2 i n t e r m e d i a t e
spring. See Figure 5-582.
8. Remove the 2-3 valve. See
Figure 5-582.
9. From the next bore remove
the retaining pin, bore plug, 3-2
valve and spacer. See Figure
5-582.
10. At the other end of the as-
sembly, top bore, remove the re-
taining pin and bore plug. See
Figure 5-582.
11. Remove the detent valve, de-
tent regulator valve, spring and
spacer. See Figure 5-582.
12. In the next bore, check the
operation of the 1-2 accumulator
valve train by compressing the
valve against the springs. See
Figure 5-582.
NOTE: The 1-2 accumulator
valve is factory adjusted.
1-2 ADJUSTING PIN
RETAINING PIN
Figure 5-577
Figure 5-578
Figure 5-580
13. If removal is necessary, the
exact position of the adjusting
screw is determined before re-
moval by using 1" to 2" micro-
meter and measuring from the
top to the adjusting screw (re-
move burrs from adjusting screw)
to the machined surface of the
valve body and remove the screw
if necessary. See Figure 5-578.
14. Remove the 1-2 accumulator
secondary valve retainer pin from
the machined face of the valve
body with an easy-out type ex-
tractor and the 1-2 accumulator
plug. See Figure 5-580.
15. R e m o v e 1-2 accumulator
bushing, secondary spring, and
secondary valve.
16. From the same bore, remove
t h e primary 1-2 accumulator
valve and spring.
b. Inspection
1. Inspect all valves for scoring,
cracks and free movement in
their respective bores.
2. Inspect the bushing for cracks,
scratches or distortion.
3. Inspect the body for cracks,
or scored bores.
4. Check all springs for distor-
tion or collasped coils.