Infiniti G20 (P11). Manual — part 82
Control Valve Lower Body
COMPONENTS
=NCAT0137
Numbers preceding valve springs correspond with those shown in SDS table on page AT-390.
SAT864J
1.
Control valve lower body
2.
Return spring
3.
Shift valve B
4.
Plug
5.
Retainer plate
6.
Pressure modifier valve
7.
Return spring
8.
Parallel pin
9.
Sleeve
10. Piston
11. Return spring
12. Retainer plate
13. Manual valve
14. Retainer plate
15. Sleeve
16. Plug
17. Spring seat
18. Return spring
19. Pressure regulator valve
20. Retainer plate
21. Plug
22. Overrun clutch control valve
23. Return spring
24. Retainer plate
25. Plug
26. Accumulator control valve
27. Return spring
28. Retainer plate
29. Return spring
30. Shift valve A
31. Retainer plate
32. Plug
33. Plug
34. Return spring
35. Shuttle control valve
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
REPAIR FOR COMPONENT PARTS
Control Valve Lower Body
AT-325
SAT872J
DISASSEMBLY
NCAT0138
Remove valves at retainer plate.
For removal procedures, refer to AT-313.
SAT138D
INSPECTION
NCAT0139
Valve Springs
NCAT0139S01
I
Check each valve spring for damage or deformation. Also
measure free length and outer diameter.
Inspection standard:
Refer to SDS, AT-390.
I
Replace valve springs if deformed or fatigued.
Control Valves
NCAT0139S02
I
Check sliding surfaces of control valves, sleeves and plugs for
damage.
SAT872J
ASSEMBLY
NCAT0140
I
Install control valves.
For installation procedures, refer to AT-390.
SAT089F
Retainer Plate (for control valve lower body)
NCAT0140S01
Refer to AT-325.
Unit: mm (in)
Name of control valve
No.
Length A Length B
Type
Pressure regulator valve
14
6.0
(0.236)
28.0
(1.102)
I
Accumulator control valve
24
Shift valve A
28
Overrun clutch control valve
20
Pressure modifier valve
12
Shuttle control valve
31
Shift valve B
5
—
—
II
I
Install proper retainer plates.
REPAIR FOR COMPONENT PARTS
Control Valve Lower Body (Cont’d)
AT-326
Reverse Clutch
COMPONENTS
=NCAT0141
SAT485JA
SAT155D
DISASSEMBLY
NCAT0142
1.
Check operation of reverse clutch.
a.
Install seal ring onto drum support of oil pump cover and install
reverse clutch assembly. Apply compressed air to oil hole.
b.
Check to see that retaining plate moves to snap ring.
c.
If retaining plate does not contact snap ring:
I
D-ring might be damaged.
I
Oil seal might be damaged.
I
Fluid might be leaking past piston check ball.
SAT156D
2.
Remove snap ring.
3.
Remove drive plates, driven plates, retaining plate, and dish
plates.
AAT489
4.
Set Tool on spring retainer and remove snap ring from reverse
clutch drum while compressing return springs.
I
Set Tool directly above springs.
I
Do not expand snap ring excessively.
5.
Remove spring retainer and return springs.
GI
MA
EM
LC
EC
FE
CL
MT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
REPAIR FOR COMPONENT PARTS
Reverse Clutch
AT-327
SAT301E
I
Do not remove return springs from spring retainer.
SAT159D
6.
Remove piston from reverse clutch drum by turning it.
SAT138E
7.
Remove D-ring and oil seal from piston.
INSPECTION
NCAT0143
Reverse Clutch Snap Ring, Spring Retainer and Return
Springs
NCAT0143S01
I
Check for deformation, fatigue or damage.
I
Replace if necessary.
I
When replacing spring retainer and return springs,
replace them as a set.
SAT162D
Reverse Clutch Drive Plates
NCAT0143S02
I
Check facing for burns, cracks or damage.
I
Measure thickness of facing.
Thickness of drive plate:
Standard value: 2.0 mm (0.079 in)
Wear limit: 1.8 mm (0.071 in)
I
If not within wear limit, replace.
REPAIR FOR COMPONENT PARTS
Reverse Clutch (Cont’d)
AT-328
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