Workshop Manual

7A–70
AUTOMATIC TRANSMISSION (4L30–E)
9.Remove spring seat (19), spring (20) and throttle
signal accumulator piston (21).
10.Remove sleeve pin (22) from oil pump assembly (29).
11.Remove boost valve sleeve (23), boost valve (24),
spring seat (25), valve spring (26), spring seat (27),
and pressure regulator valve (28).
Inspection And Repair
Visual Check:
If any damage, deformation or wear is found, replace the
damaged part.
Reassembly
1.Lubricate and preinstall pressure regulator spring
seat (27) on valve (28), with the flat side against
shoulder.
2.Install pressure regulator valve (28) and spring seat
(27) assembly, valve spring (26), and spring seat (25)
with the flat side away from spring to oil pump
assembly (29).
3.Assemble boost valve (24) into sleeve (23).
4.Install boost valve and sleeve assembly, and sleeve
pin (22) to oil pump assembly (29).
5.Install throttle signal accumulator piston (21), spring
(20), and spring seat (19), with the flat side away from
the spring, and snap ring (18) to oil pump assembly
(29).
6.Install enable valve (17), spring guide (15), enable
valve spring (16) and retainer pin (14) to oil pump
assembly (29).
7.Assemble torque converter regulator spring (10) and
torque converter regulator valve (11) into sleeve (9).
8.Install isolator valve (13), isolator valve spring (12)
and the torque converter regulator sleeve and valve
assembly into the oil pump assembly (29).
9.Install torque converter clutch control valve spring (7),
torque converter clutch control valve (6), plug (4) and
seal ring (5), and retainer pin (3) to oil pump assembly
(29).
10.Install oil pump driven gear (2) and drive gear (1).